{"id":608,"date":"2023-12-29T18:01:01","date_gmt":"2023-12-29T10:01:01","guid":{"rendered":""},"modified":"2023-12-29T18:01:01","modified_gmt":"2023-12-29T10:01:01","slug":"\u5e38\u7528\u7684JS\u6570\u7ec4\u53bb\u91cd\u65b9\u6cd5\u5927\u5168","status":"publish","type":"post","link":"https:\/\/mushiming.com\/608.html","title":{"rendered":"\u5e38\u7528\u7684JS\u6570\u7ec4\u53bb\u91cd\u65b9\u6cd5\u5927\u5168"},"content":{"rendered":"<p><svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" style=\"display: none;\"> \n <path stroke-linecap=\"round\" d=\"M5,0 0,2.5 5,5z\" id=\"raphael-marker-block\" style=\"-webkit-tap-highlight-color: rgba(0, 0, 0, 0);\"><\/path> \n<\/svg> <\/p>\n<blockquote>\n<h3>\u5199\u5728\u524d\u9762\uff1a<\/h3>\n<p><strong>\u6211\u4eec\u8981\u60f3\u4f7f\u7528\u6570\u7ec4\u53bb\u91cd\uff0c\u90a3\u5c31\u5fc5\u987b\u5bf9\u6570\u7ec4\u6709\u4e00\u5b9a\u7684\u4e86\u89e3\uff0c\u5173\u4e8eJS\u6570\u7ec4\u7684\u4e00\u4e9b\u65b9\u6cd5\u4ee5\u53ca\u4f7f\u7528\uff0c\u53ef\u53c2\u8003\uff1a<br \/> \u2460JavaScript \u5185\u7f6e\u5bf9\u8c61\u4e4b-Array<br \/> \u2461ES5\u65b0\u589e\u6570\u7ec4\u65b9\u6cd5<br \/> \u2462\u6d45\u8c08JavaScript\u4e2dES6\u65b0\u589e\u7684Set\u548cMap\u7ed3\u6784\u4ee5\u53caArray.from\u65b9\u6cd5<\/strong><\/p>\n<\/blockquote>\n<hr>\n<h4><code>\u4e0b\u9762\u8fdb\u5165\u6b63\u9898\uff1a\u5229\u7528JS\u7684\u6570\u7ec4\u5b9e\u73b0\u53bb\u91cd\u7684\u76ee\u7684<\/code><\/h4>\n<p>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;JS\u6570\u7ec4\u53bb\u91cd\u65b9\u6cd5\u6709\u5f88\u591a\uff0c\u76f8\u4fe1\u4e00\u4e9b\u5c0f\u4f19\u4f34\u4e5f\u638c\u63e1\u4e86\u597d\u591a\u79cd\u65b9\u6cd5\uff0c\u90a3\u63a5\u4e0b\u6765\u6211\u5c31\u4ecb\u7ecd\u4e00\u4e9b\u6bd4\u8f83\u5e38\u7528\u7684\u65b9\u6cd5\u4f9b\u5927\u5bb6\u53c2\u8003\u3002<\/p>\n<h6>\u65b9\u6cd51\uff1a\u4f7f\u7528indexOf()\u65b9\u6cd5\u53bb\u9664\u91cd\u590d\u7684\u5143\u7d20<\/h6>\n<p>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;indexOf\u65b9\u6cd5\u8fd4\u56de\u7ed9\u5b9a\u5143\u7d20\u5728\u6570\u7ec4\u4e2d\u7b2c\u4e00\u6b21\u51fa\u73b0\u7684\u4f4d\u7f6e\uff0c\u8fd4\u56de\u7ed3\u679c\u662f\u5339\u914d\u5f00\u59cb\u7684\u4f4d\u7f6e\u3002\u5982\u679c\u6ca1\u6709\u51fa\u73b0\u5219\u8fd4\u56de-1<\/p>\n<p>\u4f8b\uff1a<\/p>\n<pre><code class=\"prism language-javascript\"><span class=\"token keyword\">var<\/span> arr <span class=\"token operator\">=<\/span> <span class=\"token punctuation\">[<\/span><span class=\"token number\">1<\/span><span class=\"token punctuation\">,<\/span><span class=\"token number\">1<\/span><span class=\"token punctuation\">,<\/span><span class=\"token number\">2<\/span><span class=\"token punctuation\">,<\/span><span class=\"token number\">2<\/span><span class=\"token punctuation\">,<\/span><span class=\"token number\">3<\/span><span class=\"token punctuation\">,<\/span><span class=\"token number\">3<\/span><span class=\"token punctuation\">,<\/span><span class=\"token number\">4<\/span><span class=\"token punctuation\">,<\/span><span class=\"token number\">4<\/span><span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">;<\/span>\n<span class=\"token keyword\">var<\/span> newArr <span class=\"token operator\">=<\/span> <span class=\"token punctuation\">[<\/span><span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">;<\/span>\n<span class=\"token keyword\">for<\/span><span class=\"token punctuation\">(<\/span><span class=\"token keyword\">var<\/span> i<span class=\"token operator\">=<\/span><span class=\"token number\">0<\/span><span class=\"token punctuation\">,<\/span>len<span class=\"token operator\">=<\/span>arr<span class=\"token punctuation\">.<\/span>length<span class=\"token punctuation\">;<\/span>i<span class=\"token operator\">&lt;<\/span>len<span class=\"token punctuation\">;<\/span>i<span class=\"token operator\">++<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">{ \n   <!-- --><\/span>\n<span class=\"token keyword\">if<\/span><span class=\"token punctuation\">(<\/span>newArr<span class=\"token punctuation\">.<\/span><span class=\"token function\">indexOf<\/span><span class=\"token punctuation\">(<\/span>arr<span class=\"token punctuation\">[<\/span>i<span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token operator\">==<\/span> <span class=\"token operator\">-<\/span><span class=\"token number\">1<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">{ \n   <!-- --><\/span>\nnewArr<span class=\"token punctuation\">.<\/span><span class=\"token function\">push<\/span><span class=\"token punctuation\">(<\/span>arr<span class=\"token punctuation\">[<\/span>i<span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span>\n<span class=\"token punctuation\">}<\/span>\n<span class=\"token punctuation\">}<\/span>\nconsole<span class=\"token punctuation\">.<\/span><span class=\"token function\">log<\/span><span class=\"token punctuation\">(<\/span>newArr<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span>\n<\/code><\/pre>\n<p>\u7ed3\u679c\uff1a<br \/> <img decoding=\"async\" src=\"https:\/\/img.mushiming.top\/app\/common_img\/1ca9e64d37514b23b6d604691a20611c.png\" =\"\" =\"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\" alt=\"\u5e38\u7528\u7684JS\u6570\u7ec4\u53bb\u91cd\u65b9\u6cd5\u5927\u5168 (https:\/\/mushiming.com\/) \u6280\u672f\u535a\u5ba2 \u7b2c1\u5f20\" title=\"\u5e38\u7528\u7684JS\u6570\u7ec4\u53bb\u91cd\u65b9\u6cd5\u5927\u5168 \u6280\u672f\u535a\u5ba2 \u7b2c1\u5f20-\u7a46\u4e16\u660e\u535a\u5ba2\" ><\/p>\n<h6>\u65b9\u6cd52\uff1a\u4f7f\u7528lastIndexOf()\u65b9\u6cd5\u53bb\u9664\u91cd\u590d\u7684\u5143\u7d20<\/h6>\n<ul>\n<li>lastIndexOf\u65b9\u6cd5\u8fd4\u56de\u7ed9\u5b9a\u5143\u7d20\u5728\u6570\u7ec4\u4e2d\u6700\u540e\u4e00\u6b21\u51fa\u73b0\u7684\u4f4d\u7f6e\uff0c\u5982\u679c\u6ca1\u6709\u51fa\u73b0\u5219\u8fd4\u56de-1;<\/li>\n<li>lastIndexOf\u65b9\u6cd5\u7684\u7528\u6cd5\u8ddfindexOf\u65b9\u6cd5\u4e00\u81f4\uff0c\u4e3b\u8981\u7684\u533a\u522blastIndexOf\u4ece\u5c3e\u90e8\u5f00\u59cb\u5339\u914d\uff0cindexOf\u5219\u662f\u4ece\u5934\u90e8\u5f00\u59cb\u5339\u914d\uff1b<\/li>\n<li>\u53e6\u5916\uff0clastIndexOf\u7684\u7b2c\u4e8c\u4e2a\u53c2\u6570\u8868\u793a\u4ece\u8be5\u4f4d\u7f6e\u8d77\u5411\u524d\u5339\u914d\u3002<\/li>\n<\/ul>\n<p>\u4f8b\uff1a<\/p>\n<pre><code class=\"prism language-javascript\"><span class=\"token keyword\">function<\/span> <span class=\"token function\">noRepeat<\/span><span class=\"token punctuation\">(<\/span>arr<span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{ \n   <!-- --><\/span>\n<span class=\"token keyword\">var<\/span> res <span class=\"token operator\">=<\/span> <span class=\"token punctuation\">[<\/span><span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">;<\/span>\n<span class=\"token keyword\">for<\/span> <span class=\"token punctuation\">(<\/span><span class=\"token keyword\">var<\/span> i <span class=\"token operator\">=<\/span> <span class=\"token number\">0<\/span><span class=\"token punctuation\">;<\/span> i <span class=\"token operator\">&lt;<\/span> arr<span class=\"token punctuation\">.<\/span>length<span class=\"token punctuation\">;<\/span> i<span class=\"token operator\">++<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{ \n   <!-- --><\/span>\n    res<span class=\"token punctuation\">.<\/span><span class=\"token function\">lastIndexOf<\/span><span class=\"token punctuation\">(<\/span>arr<span class=\"token punctuation\">[<\/span>i<span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token operator\">!==<\/span> <span class=\"token operator\">-<\/span><span class=\"token number\">1<\/span> <span class=\"token operator\">?<\/span> <span class=\"token string\">''<\/span> <span class=\"token punctuation\">:<\/span> res<span class=\"token punctuation\">.<\/span><span class=\"token function\">push<\/span><span class=\"token punctuation\">(<\/span>arr<span class=\"token punctuation\">[<\/span>i<span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span>\n<span class=\"token punctuation\">}<\/span>\n<span class=\"token keyword\">return<\/span> res<span class=\"token punctuation\">;<\/span>\n<span class=\"token punctuation\">}<\/span>\nconsole<span class=\"token punctuation\">.<\/span><span class=\"token function\">log<\/span><span class=\"token punctuation\">(<\/span><span class=\"token function\">noRepeat<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">[<\/span><span class=\"token number\">1<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token number\">1<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token number\">2<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token number\">2<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token number\">3<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token number\">3<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token number\">4<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token number\">4<\/span><span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span>\n<\/code><\/pre>\n<p>\u7ed3\u679c\uff1a<br \/> <img decoding=\"async\" src=\"https:\/\/img.mushiming.top\/app\/common_img\/fb2a2e310076406eaf1511d1b52b665b.png\" =\"\" =\"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\" alt=\"\u5e38\u7528\u7684JS\u6570\u7ec4\u53bb\u91cd\u65b9\u6cd5\u5927\u5168 (https:\/\/mushiming.com\/) \u6280\u672f\u535a\u5ba2 \u7b2c2\u5f20\" title=\"\u5e38\u7528\u7684JS\u6570\u7ec4\u53bb\u91cd\u65b9\u6cd5\u5927\u5168 \u6280\u672f\u535a\u5ba2 \u7b2c2\u5f20-\u7a46\u4e16\u660e\u535a\u5ba2\" ><\/p>\n<h6>\u65b9\u6cd53\uff1a\u4f7f\u7528filter()\u4e0eindexOf()\u65b9\u6cd5\u53bb\u9664\u91cd\u590d\u7684\u5143\u7d20<\/h6>\n<ul>\n<li>filter\u65b9\u6cd5\u7528\u4e8e\u8fc7\u6ee4\u6570\u7ec4\u6210\u5458\uff0c\u6ee1\u8db3\u6761\u4ef6\u7684\u6210\u5458\u7ec4\u6210\u4e00\u4e2a\u65b0\u6570\u7ec4\u8fd4\u56de\uff1b<\/li>\n<li>\u5b83\u7684\u53c2\u6570\u662f\u4e00\u4e2a\u51fd\u6570\uff0c\u6240\u6709\u6570\u7ec4\u6210\u5458\u4f9d\u6b21\u6267\u884c\u8be5\u51fd\u6570\uff0c\u8fd4\u56de\u7ed3\u679c\u4e3atrue\u7684\u6210\u5458\u7ec4\u6210\u4e00\u4e2a\u65b0\u6570\u7ec4\u8fd4\u56de\uff1b<\/li>\n<li>\u8be5\u65b9\u6cd5\u4e0d\u4f1a\u6539\u53d8\u539f\u6570\u7ec4\uff1b<\/li>\n<li>filter\u65b9\u6cd5\u7684\u53c2\u6570\u51fd\u6570\u53ef\u4ee5\u63a5\u53d7\u4e09\u4e2a\u53c2\u6570\uff1a\u5f53\u524d\u6210\u5458\uff0c\u5f53\u524d\u4f4d\u7f6e\u548c\u6574\u4e2a\u6570\u7ec4\uff1b<\/li>\n<li>filter()\u53bb\u9664\u91cd\u590d\u5143\u7d20\u4f9d\u9760\u7684\u662findexOf\u7684\u5c5e\u6027\uff0c\u5373\u603b\u662f\u8fd4\u56de\u7b2c\u4e00\u4e2a\u5143\u7d20\u7684\u4f4d\u7f6e\uff0c\u540e\u9762\u7684\u91cd\u590d\u5143\u7d20\u4f4d\u7f6e\u4e0eindexOf\u8fd4\u56de\u7684\u4f4d\u7f6e\u4e0d\u76f8\u7b49\uff0c\u6240\u4ee5filter()\u53ef\u4ee5\u8fc7\u6ee4\u6389\u5b83\u4eec\u3002<\/li>\n<\/ul>\n<p>\u4f8b\uff1a<\/p>\n<pre><code class=\"prism language-javascript\"><span class=\"token keyword\">var<\/span> arr <span class=\"token operator\">=<\/span> <span class=\"token punctuation\">[<\/span><span class=\"token number\">1<\/span><span class=\"token punctuation\">,<\/span><span class=\"token number\">1<\/span><span class=\"token punctuation\">,<\/span><span class=\"token number\">2<\/span><span class=\"token punctuation\">,<\/span><span class=\"token number\">2<\/span><span class=\"token punctuation\">,<\/span><span class=\"token number\">3<\/span><span class=\"token punctuation\">,<\/span><span class=\"token number\">3<\/span><span class=\"token punctuation\">,<\/span><span class=\"token number\">4<\/span><span class=\"token punctuation\">,<\/span><span class=\"token number\">4<\/span><span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">;<\/span>\n    <span class=\"token keyword\">var<\/span> newArr <span class=\"token operator\">=<\/span> arr<span class=\"token punctuation\">.<\/span><span class=\"token function\">filter<\/span><span class=\"token punctuation\">(<\/span><span class=\"token keyword\">function<\/span><span class=\"token punctuation\">(<\/span>value<span class=\"token punctuation\">,<\/span>index<span class=\"token punctuation\">,<\/span>self<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">{ \n   <!-- --><\/span>\n    <span class=\"token keyword\">return<\/span> self<span class=\"token punctuation\">.<\/span><span class=\"token function\">indexOf<\/span><span class=\"token punctuation\">(<\/span>value<span class=\"token punctuation\">)<\/span> <span class=\"token operator\">===<\/span> index<span class=\"token punctuation\">;<\/span>\n<span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span>\nconsole<span class=\"token punctuation\">.<\/span><span class=\"token function\">log<\/span><span class=\"token punctuation\">(<\/span>newArr<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span>\n<\/code><\/pre>\n<p>\u7ed3\u679c\uff1a<br \/> <img decoding=\"async\" src=\"https:\/\/img.mushiming.top\/app\/common_img\/1f42193036194bb290eb8e15561078b7.png\" =\"\" =\"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\" alt=\"\u5e38\u7528\u7684JS\u6570\u7ec4\u53bb\u91cd\u65b9\u6cd5\u5927\u5168 (https:\/\/mushiming.com\/) \u6280\u672f\u535a\u5ba2 \u7b2c3\u5f20\" title=\"\u5e38\u7528\u7684JS\u6570\u7ec4\u53bb\u91cd\u65b9\u6cd5\u5927\u5168 \u6280\u672f\u535a\u5ba2 \u7b2c3\u5f20-\u7a46\u4e16\u660e\u535a\u5ba2\" ><\/p>\n<h6>\u65b9\u6cd54\uff1a\u4f7f\u7528ES6\u63d0\u4f9b\u7684Set\u7ed3\u6784\u53bb\u9664\u91cd\u590d\u7684\u5143\u7d20<\/h6>\n<p>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;\u4e3b\u8981\u5229\u7528Set\u7ed3\u6784\u4e0d\u80fd\u63a5\u6536\u91cd\u590d\u6570\u636e\u7684\u7279\u70b9\u3002<\/p>\n<p>\u4f8b\uff1a<\/p>\n<pre><code class=\"prism language-javascript\"><span class=\"token keyword\">var<\/span> arr <span class=\"token operator\">=<\/span> <span class=\"token punctuation\">[<\/span><span class=\"token number\">1<\/span><span class=\"token punctuation\">,<\/span><span class=\"token number\">1<\/span><span class=\"token punctuation\">,<\/span><span class=\"token number\">2<\/span><span class=\"token punctuation\">,<\/span><span class=\"token number\">2<\/span><span class=\"token punctuation\">,<\/span><span class=\"token number\">3<\/span><span class=\"token punctuation\">,<\/span><span class=\"token number\">3<\/span><span class=\"token punctuation\">,<\/span><span class=\"token number\">4<\/span><span class=\"token punctuation\">,<\/span><span class=\"token number\">4<\/span><span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">;<\/span>\n    <span class=\"token keyword\">function<\/span> <span class=\"token function\">noRepeat<\/span><span class=\"token punctuation\">(<\/span>arr<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">{ \n   <!-- --><\/span>\n        <span class=\"token keyword\">var<\/span> newArr <span class=\"token operator\">=<\/span> <span class=\"token punctuation\">[<\/span><span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">;<\/span>\n        <span class=\"token keyword\">var<\/span> myset <span class=\"token operator\">=<\/span> <span class=\"token keyword\">new<\/span> <span class=\"token class-name\">Set<\/span><span class=\"token punctuation\">(<\/span>arr<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span>\n        <span class=\"token keyword\">for<\/span><span class=\"token punctuation\">(<\/span><span class=\"token keyword\">var<\/span> val <span class=\"token keyword\">of<\/span> myset<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">{ \n   <!-- --><\/span>\n        newArr<span class=\"token punctuation\">.<\/span><span class=\"token function\">push<\/span><span class=\"token punctuation\">(<\/span>val<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span>\n<span class=\"token punctuation\">}<\/span>\n    <span class=\"token keyword\">return<\/span> newArr<span class=\"token punctuation\">;<\/span>\n<span class=\"token punctuation\">}<\/span>\n<span class=\"token keyword\">var<\/span> arr2 <span class=\"token operator\">=<\/span> <span class=\"token function\">noRepeat<\/span><span class=\"token punctuation\">(<\/span>arr<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span>\nconsole<span class=\"token punctuation\">.<\/span><span class=\"token function\">log<\/span><span class=\"token punctuation\">(<\/span>arr2<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span>\n<\/code><\/pre>\n<p>\u7ed3\u679c\uff1a<br \/> <img decoding=\"async\" src=\"https:\/\/img.mushiming.top\/app\/common_img\/1f42193036194bb290eb8e15561078b7.png\" =\"\" =\"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\" alt=\"\u5e38\u7528\u7684JS\u6570\u7ec4\u53bb\u91cd\u65b9\u6cd5\u5927\u5168 (https:\/\/mushiming.com\/) \u6280\u672f\u535a\u5ba2 \u7b2c3\u5f20\" title=\"\u5e38\u7528\u7684JS\u6570\u7ec4\u53bb\u91cd\u65b9\u6cd5\u5927\u5168 \u6280\u672f\u535a\u5ba2 \u7b2c3\u5f20-\u7a46\u4e16\u660e\u535a\u5ba2\" ><\/p>\n<h6>\u65b9\u6cd55\uff1a\u4f7f\u7528ES6\u63d0\u4f9b\u7684Set\u4e0e\u6269\u5c55\u8fd0\u7b97\u7b26\u53bb\u9664\u91cd\u590d\u7684\u5143\u7d20<\/h6>\n<p>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;ES6\u7684\u51fa\u73b0\uff0c\u771f\u771f\u662f\u6781\u65b9\u4fbf\u7684~~~<\/p>\n<p>\u4f8b\uff1a<\/p>\n<pre><code class=\"prism language-javascript\"><span class=\"token keyword\">var<\/span> arr <span class=\"token operator\">=<\/span> <span class=\"token punctuation\">[<\/span><span class=\"token number\">1<\/span><span class=\"token punctuation\">,<\/span><span class=\"token number\">1<\/span><span class=\"token punctuation\">,<\/span><span class=\"token number\">2<\/span><span class=\"token punctuation\">,<\/span><span class=\"token number\">2<\/span><span class=\"token punctuation\">,<\/span><span class=\"token number\">3<\/span><span class=\"token punctuation\">,<\/span><span class=\"token number\">3<\/span><span class=\"token punctuation\">,<\/span><span class=\"token number\">4<\/span><span class=\"token punctuation\">,<\/span><span class=\"token number\">4<\/span><span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">;<\/span>\n<span class=\"token keyword\">function<\/span> <span class=\"token function\">norepeat<\/span><span class=\"token punctuation\">(<\/span>arr<span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{ \n   <!-- --><\/span>\n    <span class=\"token keyword\">let<\/span> <span class=\"token keyword\">set<\/span> <span class=\"token operator\">=<\/span> <span class=\"token keyword\">new<\/span> <span class=\"token class-name\">Set<\/span><span class=\"token punctuation\">(<\/span>arr<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span>\n    arr <span class=\"token operator\">=<\/span> <span class=\"token punctuation\">[<\/span><span class=\"token operator\">...<\/span><span class=\"token keyword\">set<\/span><span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">;<\/span>\n    <span class=\"token keyword\">return<\/span> arr<span class=\"token punctuation\">;<\/span>\n<span class=\"token punctuation\">}<\/span>\nconsole<span class=\"token punctuation\">.<\/span><span class=\"token function\">log<\/span><span class=\"token punctuation\">(<\/span><span class=\"token function\">norepeat<\/span><span class=\"token punctuation\">(<\/span>arr<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span>\n<\/code><\/pre>\n<p>\u7ed3\u679c\uff1a<br \/> <img decoding=\"async\" src=\"https:\/\/img.mushiming.top\/app\/common_img\/1f42193036194bb290eb8e15561078b7.png\" =\"\" =\"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\" alt=\"\u5e38\u7528\u7684JS\u6570\u7ec4\u53bb\u91cd\u65b9\u6cd5\u5927\u5168 (https:\/\/mushiming.com\/) \u6280\u672f\u535a\u5ba2 \u7b2c3\u5f20\" title=\"\u5e38\u7528\u7684JS\u6570\u7ec4\u53bb\u91cd\u65b9\u6cd5\u5927\u5168 \u6280\u672f\u535a\u5ba2 \u7b2c3\u5f20-\u7a46\u4e16\u660e\u535a\u5ba2\" ><\/p>\n<h6>\u65b9\u6cd56\uff1a\u4f7f\u7528set\u4e0eArray.from()\u65b9\u6cd5\u53bb\u9664\u91cd\u590d\u7684\u5143\u7d20<\/h6>\n<p>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Array.from\u65b9\u6cd5\u53ef\u4ee5\u5c06 Set \u7ed3\u6784\u8f6c\u4e3a\u6570\u7ec4\u3002<\/p>\n<p>\u4f8b\uff1a<\/p>\n<pre class=\"language-java prettyprint linenums\"><code class=\"prism language-javascript\"><span class=\"token keyword\">var<\/span> arr <span class=\"token operator\">=<\/span> <span class=\"token punctuation\">[<\/span><span class=\"token number\">1<\/span><span class=\"token punctuation\">,<\/span><span class=\"token number\">2<\/span><span class=\"token punctuation\">,<\/span><span class=\"token number\">2<\/span><span class=\"token punctuation\">,<\/span><span class=\"token number\">2<\/span><span class=\"token punctuation\">,<\/span><span class=\"token number\">3<\/span><span class=\"token punctuation\">,<\/span><span class=\"token number\">3<\/span><span class=\"token punctuation\">,<\/span><span class=\"token number\">4<\/span><span class=\"token punctuation\">,<\/span><span class=\"token number\">4<\/span><span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">;<\/span>\n<span class=\"token keyword\">var<\/span> newArr <span class=\"token operator\">=<\/span> Array<span class=\"token punctuation\">.<\/span><span class=\"token keyword\">from<\/span><span class=\"token punctuation\">(<\/span><span class=\"token keyword\">new<\/span> <span class=\"token class-name\">Set<\/span><span class=\"token punctuation\">(<\/span>arr<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span>\nconsole<span class=\"token punctuation\">.<\/span><span class=\"token function\">log<\/span><span class=\"token punctuation\">(<\/span>newArr<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span>\n<\/code><\/pre>\n<p>\u7ed3\u679c\uff1a<br \/> <img decoding=\"async\" src=\"https:\/\/img.mushiming.top\/app\/common_img\/1f42193036194bb290eb8e15561078b7.png\" =\"\" =\"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\" alt=\"\u5e38\u7528\u7684JS\u6570\u7ec4\u53bb\u91cd\u65b9\u6cd5\u5927\u5168 (https:\/\/mushiming.com\/) \u6280\u672f\u535a\u5ba2 \u7b2c3\u5f20\" title=\"\u5e38\u7528\u7684JS\u6570\u7ec4\u53bb\u91cd\u65b9\u6cd5\u5927\u5168 \u6280\u672f\u535a\u5ba2 \u7b2c3\u5f20-\u7a46\u4e16\u660e\u535a\u5ba2\" ><\/p>\n<h6>\u65b9\u6cd57\uff1a\u4f7f\u7528splice()\u65b9\u6cd5\u4e0e\u53cc\u5c42\u5faa\u73af\u53bb\u9664\u91cd\u590d\u7684\u5143\u7d20<\/h6>\n<p>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;splice()\u65b9\u6cd5\u7528\u4e8e\u5220\u9664\u539f\u6570\u7ec4\u7684\u4e00\u90e8\u5206\u6210\u5458\uff0c\u5e76\u53ef\u4ee5\u5728\u5220\u9664\u7684\u4f4d\u7f6e\u6dfb\u52a0\u65b0\u7684\u6570\u7ec4\u6210\u5458\uff0c\u8fd4\u56de\u503c\u662f\u88ab\u5220\u9664\u7684\u5143\u7d20\u3002<\/p>\n<p>\u4f8b\uff1a<\/p>\n<pre><code class=\"prism language-javascript\"><span class=\"token keyword\">var<\/span> arr <span class=\"token operator\">=<\/span> <span class=\"token punctuation\">[<\/span><span class=\"token number\">1<\/span><span class=\"token punctuation\">,<\/span><span class=\"token number\">1<\/span><span class=\"token punctuation\">,<\/span><span class=\"token number\">2<\/span><span class=\"token punctuation\">,<\/span><span class=\"token number\">2<\/span><span class=\"token punctuation\">,<\/span><span class=\"token number\">3<\/span><span class=\"token punctuation\">,<\/span><span class=\"token number\">3<\/span><span class=\"token punctuation\">,<\/span><span class=\"token number\">4<\/span><span class=\"token punctuation\">,<\/span><span class=\"token number\">4<\/span><span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">;<\/span>\n<span class=\"token keyword\">function<\/span> <span class=\"token function\">noRepeat<\/span><span class=\"token punctuation\">(<\/span>arr<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">{ \n   <!-- --><\/span>\n    <span class=\"token keyword\">for<\/span> <span class=\"token punctuation\">(<\/span><span class=\"token keyword\">var<\/span> i <span class=\"token operator\">=<\/span> <span class=\"token number\">0<\/span><span class=\"token punctuation\">;<\/span> i <span class=\"token operator\">&lt;<\/span> arr<span class=\"token punctuation\">.<\/span>length<span class=\"token punctuation\">;<\/span> i<span class=\"token operator\">++<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{ \n   <!-- --><\/span>\n        <span class=\"token keyword\">for<\/span> <span class=\"token punctuation\">(<\/span><span class=\"token keyword\">var<\/span> j <span class=\"token operator\">=<\/span> <span class=\"token number\">0<\/span><span class=\"token punctuation\">;<\/span> j <span class=\"token operator\">&lt;<\/span> arr<span class=\"token punctuation\">.<\/span>length<span class=\"token punctuation\">;<\/span> j<span class=\"token operator\">++<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{ \n   <!-- --><\/span>\n            <span class=\"token keyword\">if<\/span> <span class=\"token punctuation\">(<\/span>arr<span class=\"token punctuation\">[<\/span>i<span class=\"token punctuation\">]<\/span> <span class=\"token operator\">==<\/span> arr<span class=\"token punctuation\">[<\/span>j<span class=\"token punctuation\">]<\/span> <span class=\"token operator\">&amp;&amp;<\/span> i <span class=\"token operator\">!=<\/span> j<span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{ \n   <!-- --><\/span>\n                arr<span class=\"token punctuation\">.<\/span><span class=\"token function\">splice<\/span><span class=\"token punctuation\">(<\/span>j<span class=\"token punctuation\">,<\/span> <span class=\"token number\">1<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span>\n            <span class=\"token punctuation\">}<\/span>\n        <span class=\"token punctuation\">}<\/span>\n    <span class=\"token punctuation\">}<\/span>\n    <span class=\"token keyword\">return<\/span> arr<span class=\"token punctuation\">;<\/span>\n<span class=\"token punctuation\">}<\/span>\n<span class=\"token keyword\">var<\/span> arr2  <span class=\"token operator\">=<\/span> <span class=\"token function\">noRepeat<\/span><span class=\"token punctuation\">(<\/span>arr<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span>\nconsole<span class=\"token punctuation\">.<\/span><span class=\"token function\">log<\/span><span class=\"token punctuation\">(<\/span>arr2<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span>   \n<\/code><\/pre>\n<p>\u7ed3\u679c\uff1a<br \/> <img decoding=\"async\" src=\"https:\/\/img.mushiming.top\/app\/common_img\/1f42193036194bb290eb8e15561078b7.png\" =\"\" =\"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\" alt=\"\u5e38\u7528\u7684JS\u6570\u7ec4\u53bb\u91cd\u65b9\u6cd5\u5927\u5168 (https:\/\/mushiming.com\/) \u6280\u672f\u535a\u5ba2 \u7b2c3\u5f20\" title=\"\u5e38\u7528\u7684JS\u6570\u7ec4\u53bb\u91cd\u65b9\u6cd5\u5927\u5168 \u6280\u672f\u535a\u5ba2 \u7b2c3\u5f20-\u7a46\u4e16\u660e\u535a\u5ba2\" ><\/p>\n<h6>\u65b9\u6cd58\uff1a\u4f7f\u7528includes()\u65b9\u6cd5\u53bb\u9664\u91cd\u590d\u7684\u5143\u7d20<\/h6>\n<p>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; includes()\u65b9\u6cd5\u7528\u4e8e\u5224\u65ad\u5b57\u7b26\u4e32\u662f\u5426\u5305\u542b\u6307\u5b9a\u7684\u5b50\u5b57\u7b26\u4e32\uff0c\u5982\u679c\u627e\u5230\u5339\u914d\u7684\u5b57\u7b26\u5219\u8fd4\u56detrue\uff0c\u5426\u5219\u8fd4\u56defalse\u3002<\/p>\n<p>\u4f8b\uff1a<\/p>\n<pre><code class=\"prism language-javascript\"><span class=\"token keyword\">function<\/span> <span class=\"token function\">noRepeat<\/span><span class=\"token punctuation\">(<\/span>arr<span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{ \n   <!-- --><\/span>\n    <span class=\"token keyword\">var<\/span> newArr <span class=\"token operator\">=<\/span> <span class=\"token punctuation\">[<\/span><span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">;<\/span>\n    <span class=\"token keyword\">for<\/span> <span class=\"token punctuation\">(<\/span><span class=\"token keyword\">var<\/span> i <span class=\"token operator\">=<\/span> <span class=\"token number\">0<\/span><span class=\"token punctuation\">;<\/span> i <span class=\"token operator\">&lt;<\/span> arr<span class=\"token punctuation\">.<\/span>length<span class=\"token punctuation\">;<\/span> i<span class=\"token operator\">++<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{ \n   <!-- --><\/span>\n        <span class=\"token keyword\">if<\/span> <span class=\"token punctuation\">(<\/span><span class=\"token operator\">!<\/span>newArr<span class=\"token punctuation\">.<\/span><span class=\"token function\">includes<\/span><span class=\"token punctuation\">(<\/span>arr<span class=\"token punctuation\">[<\/span>i<span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{ \n   <!-- --><\/span>\n            newArr<span class=\"token punctuation\">.<\/span><span class=\"token function\">push<\/span><span class=\"token punctuation\">(<\/span>arr<span class=\"token punctuation\">[<\/span>i<span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span>\n        <span class=\"token punctuation\">}<\/span>\n    <span class=\"token punctuation\">}<\/span>\n    <span class=\"token keyword\">return<\/span> newArr<span class=\"token punctuation\">;<\/span>\n<span class=\"token punctuation\">}<\/span>\nconsole<span class=\"token punctuation\">.<\/span><span class=\"token function\">log<\/span><span class=\"token punctuation\">(<\/span><span class=\"token function\">noRepeat<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">[<\/span><span class=\"token number\">1<\/span><span class=\"token punctuation\">,<\/span><span class=\"token number\">1<\/span><span class=\"token punctuation\">,<\/span><span class=\"token number\">2<\/span><span class=\"token punctuation\">,<\/span><span class=\"token number\">2<\/span><span class=\"token punctuation\">,<\/span><span class=\"token number\">3<\/span><span class=\"token punctuation\">,<\/span><span class=\"token number\">3<\/span><span class=\"token punctuation\">,<\/span><span class=\"token number\">4<\/span><span class=\"token punctuation\">,<\/span><span class=\"token number\">4<\/span><span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span>\n<\/code><\/pre>\n<p>\u7ed3\u679c\uff1a<br \/> <img decoding=\"async\" src=\"https:\/\/img.mushiming.top\/app\/common_img\/1f42193036194bb290eb8e15561078b7.png\" =\"\" =\"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\" alt=\"\u5e38\u7528\u7684JS\u6570\u7ec4\u53bb\u91cd\u65b9\u6cd5\u5927\u5168 (https:\/\/mushiming.com\/) \u6280\u672f\u535a\u5ba2 \u7b2c3\u5f20\" title=\"\u5e38\u7528\u7684JS\u6570\u7ec4\u53bb\u91cd\u65b9\u6cd5\u5927\u5168 \u6280\u672f\u535a\u5ba2 \u7b2c3\u5f20-\u7a46\u4e16\u660e\u535a\u5ba2\" ><\/p>\n<h6>\u65b9\u6cd59\uff1a\u4f7f\u7528forEach()\u548cincludes()\u65b9\u6cd5\u53bb\u9664\u91cd\u590d\u7684\u5143\u7d20<\/h6>\n<ul>\n<li>forEach\u65b9\u6cd5\u662f\u5bf9\u6570\u7ec4\u7684\u6240\u6709\u6210\u5458\u4f9d\u6b21\u6267\u884c\u53c2\u6570\u51fd\u6570\u3002\u4f46\u662f\uff0cforEach\u65b9\u6cd5\u4e0d\u8fd4\u56de\u503c\uff0c\u53ea\u7528\u6765\u64cd\u4f5c\u6570\u636e\u3002<\/li>\n<li>forEach\u7684\u53c2\u6570\u662f\u4e00\u4e2a\u51fd\u6570\uff0c\u8be5\u51fd\u6570\u540c\u6837\u63a5\u53d7\u4e09\u4e2a\u53c2\u6570\uff1a\u5f53\u524d\u503c\u3001\u5f53\u524d\u4f4d\u7f6e\u3001\u6574\u4e2a\u6570\u7ec4\u3002<\/li>\n<\/ul>\n<p>\u4f8b\uff1a<\/p>\n<pre><code class=\"prism language-javascript\"><span class=\"token keyword\">function<\/span> <span class=\"token function\">noRepeat<\/span><span class=\"token punctuation\">(<\/span>arr<span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{ \n   <!-- --><\/span>\n    <span class=\"token keyword\">var<\/span> newArr <span class=\"token operator\">=<\/span> <span class=\"token punctuation\">[<\/span><span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">;<\/span>\n    arr<span class=\"token punctuation\">.<\/span><span class=\"token function\">forEach<\/span><span class=\"token punctuation\">(<\/span>item <span class=\"token operator\">=&gt;<\/span> <span class=\"token punctuation\">{ \n   <!-- --><\/span>\n        <span class=\"token keyword\">return<\/span> newArr<span class=\"token punctuation\">.<\/span><span class=\"token function\">includes<\/span><span class=\"token punctuation\">(<\/span>item<span class=\"token punctuation\">)<\/span> <span class=\"token operator\">?<\/span> <span class=\"token string\">''<\/span> <span class=\"token punctuation\">:<\/span> newArr<span class=\"token punctuation\">.<\/span><span class=\"token function\">push<\/span><span class=\"token punctuation\">(<\/span>item<span class=\"token punctuation\">)<\/span>\n    <span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span>\n    <span class=\"token keyword\">return<\/span> newArr<span class=\"token punctuation\">;<\/span>\n<span class=\"token punctuation\">}<\/span>\nconsole<span class=\"token punctuation\">.<\/span><span class=\"token function\">log<\/span><span class=\"token punctuation\">(<\/span><span class=\"token function\">noRepeat<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">[<\/span><span class=\"token number\">1<\/span><span class=\"token punctuation\">,<\/span><span class=\"token number\">1<\/span><span class=\"token punctuation\">,<\/span><span class=\"token number\">2<\/span><span class=\"token punctuation\">,<\/span><span class=\"token number\">2<\/span><span class=\"token punctuation\">,<\/span><span class=\"token number\">3<\/span><span class=\"token punctuation\">,<\/span><span class=\"token number\">3<\/span><span class=\"token punctuation\">,<\/span><span class=\"token number\">4<\/span><span class=\"token punctuation\">,<\/span><span class=\"token number\">4<\/span><span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span>\n<\/code><\/pre>\n<p>\u7ed3\u679c\uff1a<br \/> <img decoding=\"async\" src=\"https:\/\/img.mushiming.top\/app\/common_img\/1f42193036194bb290eb8e15561078b7.png\" =\"\" =\"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\" alt=\"\u5e38\u7528\u7684JS\u6570\u7ec4\u53bb\u91cd\u65b9\u6cd5\u5927\u5168 (https:\/\/mushiming.com\/) \u6280\u672f\u535a\u5ba2 \u7b2c3\u5f20\" title=\"\u5e38\u7528\u7684JS\u6570\u7ec4\u53bb\u91cd\u65b9\u6cd5\u5927\u5168 \u6280\u672f\u535a\u5ba2 \u7b2c3\u5f20-\u7a46\u4e16\u660e\u535a\u5ba2\" ><\/p>\n<h6>\u65b9\u6cd510\uff1a\u5229\u7528\u7a7a\u5bf9\u8c61\u6765\u8bb0\u5f55\u65b0\u6570\u7ec4\u4e2d\u5df2\u7ecf\u5b58\u50a8\u8fc7\u7684\u5143\u7d20<\/h6>\n<p>\u4f8b\uff1a<\/p>\n<pre><code class=\"prism language-javascript\"><span class=\"token keyword\">var<\/span> arr <span class=\"token operator\">=<\/span> <span class=\"token punctuation\">[<\/span><span class=\"token number\">1<\/span><span class=\"token punctuation\">,<\/span><span class=\"token number\">1<\/span><span class=\"token punctuation\">,<\/span><span class=\"token number\">2<\/span><span class=\"token punctuation\">,<\/span><span class=\"token number\">2<\/span><span class=\"token punctuation\">,<\/span><span class=\"token number\">3<\/span><span class=\"token punctuation\">,<\/span><span class=\"token number\">3<\/span><span class=\"token punctuation\">,<\/span><span class=\"token number\">4<\/span><span class=\"token punctuation\">,<\/span><span class=\"token number\">4<\/span><span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">;<\/span>\n<span class=\"token keyword\">var<\/span> obj<span class=\"token operator\">=<\/span><span class=\"token punctuation\">{ \n   <!-- --><\/span><span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">;<\/span>\n<span class=\"token keyword\">var<\/span> newArr<span class=\"token operator\">=<\/span><span class=\"token punctuation\">[<\/span><span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">;<\/span>\n<span class=\"token keyword\">for<\/span><span class=\"token punctuation\">(<\/span><span class=\"token keyword\">var<\/span> i<span class=\"token operator\">=<\/span><span class=\"token number\">0<\/span><span class=\"token punctuation\">;<\/span>i<span class=\"token operator\">&lt;<\/span>arr<span class=\"token punctuation\">.<\/span>length<span class=\"token punctuation\">;<\/span>i<span class=\"token operator\">++<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">{ \n   <!-- --><\/span>\n    <span class=\"token keyword\">if<\/span><span class=\"token punctuation\">(<\/span><span class=\"token operator\">!<\/span>obj<span class=\"token punctuation\">[<\/span>arr<span class=\"token punctuation\">[<\/span>i<span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">{ \n   <!-- --><\/span>\n        obj<span class=\"token punctuation\">[<\/span>arr<span class=\"token punctuation\">[<\/span>i<span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">]<\/span><span class=\"token operator\">=<\/span><span class=\"token boolean\">true<\/span><span class=\"token punctuation\">;<\/span>\n        newArr<span class=\"token punctuation\">.<\/span><span class=\"token function\">push<\/span><span class=\"token punctuation\">(<\/span>arr<span class=\"token punctuation\">[<\/span>i<span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span>\n    <span class=\"token punctuation\">}<\/span>\n<span class=\"token punctuation\">}<\/span>\nconsole<span class=\"token punctuation\">.<\/span><span class=\"token function\">log<\/span><span class=\"token punctuation\">(<\/span>newArr<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span> \n<\/code><\/pre>\n<p>\u7ed3\u679c\uff1a<br \/> <img decoding=\"async\" src=\"https:\/\/img.mushiming.top\/app\/common_img\/1f42193036194bb290eb8e15561078b7.png\" =\"\" =\"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\" alt=\"\u5e38\u7528\u7684JS\u6570\u7ec4\u53bb\u91cd\u65b9\u6cd5\u5927\u5168 (https:\/\/mushiming.com\/) \u6280\u672f\u535a\u5ba2 \u7b2c3\u5f20\" title=\"\u5e38\u7528\u7684JS\u6570\u7ec4\u53bb\u91cd\u65b9\u6cd5\u5927\u5168 \u6280\u672f\u535a\u5ba2 \u7b2c3\u5f20-\u7a46\u4e16\u660e\u535a\u5ba2\" ><\/p>\n<h6>\u65b9\u6cd511\uff1a\u4f7f\u7528sort()\u65b9\u6cd5\u53bb\u9664\u91cd\u590d\u7684\u5143\u7d20<\/h6>\n<p>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;\u4f7f\u7528sort()\u65b9\u6cd5\u5148\u5c06\u539f\u6570\u7ec4\u6392\u5e8f\uff0c\u7136\u540e\u4e0e\u76f8\u90bb\u7684\u8fdb\u884c\u6bd4\u8f83\uff0c\u5982\u679c\u4e0d\u540c\u5219\u5b58\u5165\u65b0\u6570\u7ec4\u3002\uff08\u539f\u6570\u7ec4\u957f\u5ea6\u4e0d\u53d8\uff0c\u4f46\u8981\u6ce8\u610f\uff1asort\u65b9\u6cd5\u4e0d\u662f\u6309\u7167\u5927\u5c0f\u6392\u5e8f\uff0c\u800c\u662f\u6309\u7167\u5b57\u5178\u987a\u5e8f\uff09<\/p>\n<p>\u4f8b\uff1a<\/p>\n<pre><code class=\"prism language-javascript\"><span class=\"token keyword\">var<\/span> arr <span class=\"token operator\">=<\/span> <span class=\"token punctuation\">[<\/span><span class=\"token number\">1<\/span><span class=\"token punctuation\">,<\/span><span class=\"token number\">1<\/span><span class=\"token punctuation\">,<\/span><span class=\"token number\">2<\/span><span class=\"token punctuation\">,<\/span><span class=\"token number\">2<\/span><span class=\"token punctuation\">,<\/span><span class=\"token number\">3<\/span><span class=\"token punctuation\">,<\/span><span class=\"token number\">3<\/span><span class=\"token punctuation\">,<\/span><span class=\"token number\">4<\/span><span class=\"token punctuation\">,<\/span><span class=\"token number\">4<\/span><span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">;<\/span>\n<span class=\"token keyword\">function<\/span> <span class=\"token function\">noRepeat<\/span><span class=\"token punctuation\">(<\/span>arr<span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{ \n   <!-- --><\/span>\n    <span class=\"token keyword\">var<\/span> ret <span class=\"token operator\">=<\/span> <span class=\"token punctuation\">[<\/span><span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">;<\/span>\n    arr<span class=\"token punctuation\">.<\/span><span class=\"token function\">sort<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span>  \n    <span class=\"token keyword\">var<\/span> res <span class=\"token operator\">=<\/span> arr<span class=\"token punctuation\">[<\/span><span class=\"token number\">0<\/span><span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">;<\/span>\n    ret<span class=\"token punctuation\">.<\/span><span class=\"token function\">push<\/span><span class=\"token punctuation\">(<\/span>arr<span class=\"token punctuation\">[<\/span><span class=\"token number\">0<\/span><span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span>\n    <span class=\"token keyword\">for<\/span> <span class=\"token punctuation\">(<\/span><span class=\"token keyword\">var<\/span> i <span class=\"token operator\">=<\/span> <span class=\"token number\">1<\/span><span class=\"token punctuation\">;<\/span> i <span class=\"token operator\">&lt;<\/span> arr<span class=\"token punctuation\">.<\/span>length<span class=\"token punctuation\">;<\/span> i<span class=\"token operator\">++<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{ \n   <!-- --><\/span>\n        <span class=\"token keyword\">if<\/span> <span class=\"token punctuation\">(<\/span>arr<span class=\"token punctuation\">[<\/span>i<span class=\"token punctuation\">]<\/span> <span class=\"token operator\">!=<\/span> res<span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{ \n   <!-- --><\/span> \n            ret<span class=\"token punctuation\">.<\/span><span class=\"token function\">push<\/span><span class=\"token punctuation\">(<\/span>arr<span class=\"token punctuation\">[<\/span>i<span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span>\n            res <span class=\"token operator\">=<\/span> arr<span class=\"token punctuation\">[<\/span>i<span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">;<\/span>\n        <span class=\"token punctuation\">}<\/span>\n    <span class=\"token punctuation\">}<\/span>\n    <span class=\"token keyword\">return<\/span> ret<span class=\"token punctuation\">;<\/span>\n<span class=\"token punctuation\">}<\/span>\n<span class=\"token keyword\">var<\/span> arr2 <span class=\"token operator\">=<\/span> <span class=\"token function\">noRepeat<\/span><span class=\"token punctuation\">(<\/span>arr<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span>\nconsole<span class=\"token punctuation\">.<\/span><span class=\"token function\">log<\/span><span class=\"token punctuation\">(<\/span>arr2<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span> \n<\/code><\/pre>\n<p>\u7ed3\u679c\uff1a<br \/> <img decoding=\"async\" src=\"https:\/\/img.mushiming.top\/app\/common_img\/1f42193036194bb290eb8e15561078b7.png\" =\"\" =\"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\" alt=\"\u5e38\u7528\u7684JS\u6570\u7ec4\u53bb\u91cd\u65b9\u6cd5\u5927\u5168 (https:\/\/mushiming.com\/) \u6280\u672f\u535a\u5ba2 \u7b2c3\u5f20\" title=\"\u5e38\u7528\u7684JS\u6570\u7ec4\u53bb\u91cd\u65b9\u6cd5\u5927\u5168 \u6280\u672f\u535a\u5ba2 \u7b2c3\u5f20-\u7a46\u4e16\u660e\u535a\u5ba2\" ><\/p>\n<hr>\n<p><strong><code>\u9119\u4eba\u624d\u758f\u5b66\u6d45\uff0c\u5982\u6709\u7eb0\u6f0f\uff0c\u671b\u5404\u8def\u5de8\u4f6c\u4e0d\u541d\u8d50\u6559~<\/code><\/strong><\/p>\n","protected":false},"excerpt":{"rendered":"\u5e38\u7528\u7684JS\u6570\u7ec4\u53bb\u91cd\u65b9\u6cd5\u5927\u5168\u5199\u5728\u524d\u9762\uff1a\u6211\u4eec\u8981\u60f3\u4f7f\u7528\u6570\u7ec4\u53bb\u91cd\uff0c\u90a3\u5c31\u5fc5\u987b\u5bf9\u6570\u7ec4\u6709\u4e00\u5b9a\u7684\u4e86\u89e3\uff0c\u5173\u4e8eJS\u6570\u7ec4\u7684\u4e00\u4e9b\u65b9\u6cd5\u4ee5\u53ca\u4f7f\u7528\uff0c\u53ef...","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[82],"tags":[],"_links":{"self":[{"href":"https:\/\/mushiming.com\/wp-json\/wp\/v2\/posts\/608"}],"collection":[{"href":"https:\/\/mushiming.com\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/mushiming.com\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/mushiming.com\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/mushiming.com\/wp-json\/wp\/v2\/comments?post=608"}],"version-history":[{"count":0,"href":"https:\/\/mushiming.com\/wp-json\/wp\/v2\/posts\/608\/revisions"}],"wp:attachment":[{"href":"https:\/\/mushiming.com\/wp-json\/wp\/v2\/media?parent=608"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/mushiming.com\/wp-json\/wp\/v2\/categories?post=608"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/mushiming.com\/wp-json\/wp\/v2\/tags?post=608"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}