{"id":592,"date":"2024-01-06T18:01:01","date_gmt":"2024-01-06T10:01:01","guid":{"rendered":""},"modified":"2024-01-06T18:01:01","modified_gmt":"2024-01-06T10:01:01","slug":"javaScript\u6570\u7ec4\u53bb\u91cd\u65b9\u6cd5","status":"publish","type":"post","link":"https:\/\/mushiming.com\/592.html","title":{"rendered":"javaScript\u6570\u7ec4\u53bb\u91cd\u65b9\u6cd5"},"content":{"rendered":"<div id=\"cnblogs_post_body\" class=\"blogpost-body\">\n<p>&nbsp;<\/p>\n<p>\u5728JAvascript\u5e73\u65f6\u9879\u76ee\u5f00\u53d1\u4e2d\u7ecf\u5e38\u4f1a\u7528\u5230\u6570\u7ec4\u53bb\u91cd\u7684\u64cd\u4f5c\u3002\u8fd9\u65f6\u5019\u5c31\u8981\u7528\u5230JS\u6570\u7ec4\u53bb\u91cd\u7684\u65b9\u6cd5\u4e86\u3002<\/p>\n<p>demo1:<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/img.mushiming.top\/app\/common_img\/91fc93a012944565a126118ddae549f7.png\" =\"\" =\"\" alt=\"javaScript\u6570\u7ec4\u53bb\u91cd\u65b9\u6cd5 (https:\/\/mushiming.com\/) \u6280\u672f\u535a\u5ba2 \u7b2c1\u5f20\" title=\"javaScript\u6570\u7ec4\u53bb\u91cd\u65b9\u6cd5 \u6280\u672f\u535a\u5ba2 \u7b2c1\u5f20-\u7a46\u4e16\u660e\u535a\u5ba2\" ><\/p>\n<p>\u7b2c\u4e00\u79cd\uff1aJS\u6570\u7ec4\u53bb\u91cd\u64cd\u4f5c\u65b9\u6cd5\u662f\u5229\u7528\u904d\u5386\u539f\u6570\u7ec4\uff0c\u5229\u7528\u6570\u7ec4\u7684indexOf()\u65b9\u6cd5\u6765\u6765\u5224\u65ad\u65b0\u6570\u7ec4b\u4e2d\u662f\u5426\u6709\u539f\u6570\u7ec4a\u4e2d\u7684\u5143\u7d20\uff0c\u5982\u679c\u6ca1\u6709\u7684\u8bdd\u5219\u5728b\u6570\u7ec4\u7684\u540e\u9762\u8ffd\u52a0\u4e0aa[i]\uff0c\u5982\u679c\u6709\u7684\u8bdd\u5c31\u4e0d\u6267\u884c\u4efb\u4f55\u64cd\u4f5c\uff0c\u6700\u540e\u53ef\u4ee5\u8fbe\u5230\u6570\u7ec4\u53bb\u91cd\u7684\u64cd\u4f5c\u3002<\/p>\n<p>\u8fd9\u79cd\u65b9\u6cd5\u5e94\u8be5\u662f\u5e73\u65f6\u5f00\u53d1\u4e2d\u6700\u5e38\u7528\u7684JS\u6570\u7ec4\u53bb\u91cd\u7684\u65b9\u6cd5\u4e86\uff0c\u7b80\u5355\u53c8\u5b9e\u7528\u3002<\/p>\n<p>&nbsp;<\/p>\n<p>demo2:<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/img.mushiming.top\/app\/common_img\/f0074c40bf67454486d0e29c6acb3a9e.png\" =\"\" =\"\" alt=\"javaScript\u6570\u7ec4\u53bb\u91cd\u65b9\u6cd5 (https:\/\/mushiming.com\/) \u6280\u672f\u535a\u5ba2 \u7b2c2\u5f20\" title=\"javaScript\u6570\u7ec4\u53bb\u91cd\u65b9\u6cd5 \u6280\u672f\u535a\u5ba2 \u7b2c2\u5f20-\u7a46\u4e16\u660e\u535a\u5ba2\" ><\/p>\n<p>\u7b2c\u4e8c\u79cd\u53bb\u91cd\u7684\u65b9\u6cd5\u6bd4\u8f83\u5de7\u5999\uff0c\u662f\u5b9a\u4e49\u4e00\u4e2a\u7a7a\u5bf9\u8c61\u548c\u4e00\u4e2a\u7a7a\u6570\u7ec4\uff0c\u5728\u904d\u5386\u539f\u6570\u7ec4\u7684\u65f6\u5019\u6765\u7528\u539f\u6570\u7ec4a\u7684\u5143\u7d20\u503c\u4f5c\u4e3a\u5b9a\u4e49\u7a7a\u5bf9\u8c61c\u7684\u5c5e\u6027\uff0c\u7136\u540e\u5224\u65ad\uff0c\u5982\u679cc[a[i]]\u4e0d\u5b58\u5728\u7684\u8bdd\u90a3\u4e48\u5c31\u5b9a\u4e49\u5bf9\u8c61 c \u7684\u5c5e\u6027 c[a[i]] \u7684\u5c5e\u6027\u503c\u662f1\uff08\u53ef\u4ee5\u662f\u4efb\u4f55\u503c\uff09\u3002\u81f3\u6b64\u5c31\u597d\u7406\u89e3\u591a\u4e86\uff0c\u4f9d\u6b21\u7c7b\u63a8\u5f53\u540e\u9762\u51fa\u73b0\u548cc[a[i]]\u7684\u5c5e\u6027\u540d\u76f8\u540c\u7684\u65f6\u5019\u4e5f\u5c31\u662f\u539f\u6570\u7ec4a\u7684\u5143\u7d20\u51fa\u73b0\u91cd\u590d\u7684\u65f6\u5019\u5224\u65ad\u7684\u7ed3\u679c\u5c31\u662ftrue\u8fd9\u4e2a\u65f6\u5019\u8df3\u51fa\u5224\u65ad\uff0c\u65b0\u6570\u7ec4b\u5c31\u4e0d\u8ffd\u52a0\u8fd9\u4e2a\u5143\u7d20\u503c\uff0c\u7136\u540e\u53ef\u4ee5\u8fbe\u5230\u6570\u7ec4\u53bb\u91cd\u7684\u6548\u679c\uff0cdemo\u5f88\u6e05\u6670\uff0c\u53ef\u4ee5\u53c2\u8003\u3002<\/p>\n<p>&nbsp;<\/p>\n<p>demo3:<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/img.mushiming.top\/app\/common_img\/043cce23eec34fb097d5d485dcf5a7a3.png\" =\"\" =\"\" alt=\"javaScript\u6570\u7ec4\u53bb\u91cd\u65b9\u6cd5 (https:\/\/mushiming.com\/) \u6280\u672f\u535a\u5ba2 \u7b2c3\u5f20\" title=\"javaScript\u6570\u7ec4\u53bb\u91cd\u65b9\u6cd5 \u6280\u672f\u535a\u5ba2 \u7b2c3\u5f20-\u7a46\u4e16\u660e\u535a\u5ba2\" ><\/p>\n<p>\u7b2c\u4e09\u79cdJS\u6570\u7ec4\u53bb\u91cd\u7684\u65b9\u6cd5\u662f\u5229\u7528JS\u7684forEach\u65b9\u6cd5\u904d\u5386\u539f\u6570\u7ec4a\uff0c\u7136\u540e\u5229\u7528\u5f62\u53c2val\uff0cindex\uff0carray\u505a\u5224\u65ad\u3002array.indexOf(val)==index\u3002\u5728if\u5224\u65ad\u4e2d\u5229\u7528\u6570\u7ec4\u7684indexOf\uff08\uff09\u5224\u65ad\u8fd4\u56de\u7684\u7ed3\u679c\u662f\u62ec\u53f7\u91cc\u9762\u7684\u503c\u9996\u6b21\u51fa\u73b0\u7684\u4f4d\u7f6e\u6765\u5224\u65ad\uff0c\u5982\u679c\u62ec\u53f7\u91cc\u9762\u662ftrue\u7684\u8bdd\u5219\u8bf4\u660e\u5f53\u524d\u7684val\u503c\u662f\u5728\u6570\u7ec4\u4e2d\u9996\u6b21\u51fa\u73b0\u7684\uff0c\u6240\u4ee5\u7a7a\u6570\u7ec4b\u540e\u9762\u8ffd\u52a0\u8fd9\u4e2a\u503c\uff0c\u8fd9\u8fd9\u6b21forEach\u4e2d\uff0c\u540e\u9762\u6240\u6709 \u51fa\u73b0\u8fd9\u4e2a\u503c\u7684\u65f6\u5019\u90fd\u5c06\u8fd4\u56defalse\uff0c\u4e0d\u505a\u4efb\u4f55\u5904\u7406\uff0c\u56e0\u6b64\u53ef\u4ee5\u8fbe\u5230\u6570\u7ec4\u53bb\u91cd\u7684\u6548\u679c\uff0c\u8fd9\u4e2a\u65b9\u6cd5\u5229\u7528forEach\u662f\u6bd4\u8f83\u5de7\u5999\u7684\uff0c\u4e5f\u63a8\u8350\u4f7f\u7528\u3002<\/p>\n<p>&nbsp;<\/p>\n<p>demo4:<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/img.mushiming.top\/app\/common_img\/a532eff4c024442fa174056f36940f9f.png\" =\"\" =\"\" alt=\"javaScript\u6570\u7ec4\u53bb\u91cd\u65b9\u6cd5 (https:\/\/mushiming.com\/) \u6280\u672f\u535a\u5ba2 \u7b2c4\u5f20\" title=\"javaScript\u6570\u7ec4\u53bb\u91cd\u65b9\u6cd5 \u6280\u672f\u535a\u5ba2 \u7b2c4\u5f20-\u7a46\u4e16\u660e\u535a\u5ba2\" ><\/p>\n<p>&nbsp;<\/p>\n<p>\u7b2c\u56db\u79cd\u6570\u7ec4\u53bb\u91cd\u7684\u65b9\u6cd5\u4e5f\u6bd4\u8f83\u5e38\u89c1\uff0c\u9996\u5148\u5c06\u539f\u6765\u7684\u6570\u7ec4a\u8fdb\u884c\u4ece\u5c0f\u5230\u5927\u6216\u8005\u4ece\u5927\u5230\u5c0f\u7684\u6392\u5e8f\uff0c\u7136\u540e\u5b9a\u4e49\u4e00\u4e2a\u7a7a\u6570\u7ec4b\uff0c\u540c\u65f6\u5b9a\u4e49\u4e00\u4e2a\u53d8\u91cfitem\u3002\u904d\u5386\u539f\u6570\u7ec4a\uff0c\u5728for\u5faa\u73af\u91cc\u9762\u5224\u65aditem\uff01\uff1da[i]\uff0c\u5982\u679c\u4e0d\u76f8\u7b49\u7684\u8bdd\u5219b\u540e\u9762\u8ffd\u52a0\u8fd9\u4e2aa[i]\uff0c\u540c\u65f6item\u7b49\u4e8ea[i]\u3002\u5982\u679c\u76f8\u7b49\u7684\u8bdd\u5219\u8df3\u8fc7\uff0c\u8fd9\u6837\u4e5f\u53ef\u4ee5\u8fbe\u5230\u6570\u7ec4\u53bb\u91cd\u7684\u64cd\u4f5c\u3002<\/p>\n<p>&nbsp;<\/p>\n<p>\u5f53\u7136Javascript\u4e2d\u6570\u7ec4\u53bb\u91cd\u7684\u65b9\u6cd5\u4e0d\u6b62\u8fd9\u56db\u79cd\uff0c\u80af\u5b9a\u8fd8\u6709\u5176\u4ed6\u53bb\u91cd\u7684\u597d\u65b9\u6cd5\uff0c\u5982\u679c\u6709\u597d\u7684\u65b9\u6cd5\u4e5f\u8bf7\u7ed9\u6211\u8865\u5145\u3002<\/p>\n<p>&nbsp;<\/p>\n<p>\u6bcf\u5929\u8fdb\u6b65\u4e00\u70b9\u70b9<\/p>\n<\/div>\n<p>\u8f6c\u8f7d\u4e8e:https:\/\/www.cnblogs.com\/TheKingLei\/p\/7197624.html<\/p>\n","protected":false},"excerpt":{"rendered":"javaScript\u6570\u7ec4\u53bb\u91cd\u65b9\u6cd5\u5728JAvascript\u5e73\u65f6\u9879\u76ee\u5f00\u53d1\u4e2d\u7ecf\u5e38\u4f1a\u7528\u5230\u6570\u7ec4\u53bb\u91cd\u7684\u64cd\u4f5c\u3002\u8fd9\u65f6\u5019\u5c31\u8981\u7528\u5230JS\u6570\u7ec4\u53bb\u91cd\u7684\u65b9\u6cd5\u4e86\u3002demo1:\u7b2c...","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\/592"}],"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=592"}],"version-history":[{"count":0,"href":"https:\/\/mushiming.com\/wp-json\/wp\/v2\/posts\/592\/revisions"}],"wp:attachment":[{"href":"https:\/\/mushiming.com\/wp-json\/wp\/v2\/media?parent=592"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/mushiming.com\/wp-json\/wp\/v2\/categories?post=592"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/mushiming.com\/wp-json\/wp\/v2\/tags?post=592"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}