{"id":52630,"date":"2024-12-03T13:30:18","date_gmt":"2024-12-03T05:30:18","guid":{"rendered":"https:\/\/fwq.ai\/blog\/52630\/"},"modified":"2024-12-03T13:30:18","modified_gmt":"2024-12-03T05:30:18","slug":"%e5%88%a9%e7%94%a8-javascript-%e7%9a%84%e9%9b%86%e5%90%88%e5%92%8c%e6%98%a0%e5%b0%84%e5%ae%9e%e7%8e%b0%e9%ab%98%e6%95%88%e7%9a%84%e5%86%85%e5%ae%b9%e7%ae%a1%e7%90%86%e7%b3%bb%e7%bb%9f","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/52630\/","title":{"rendered":"\u5229\u7528 JavaScript \u7684\u96c6\u5408\u548c\u6620\u5c04\u5b9e\u73b0\u9ad8\u6548\u7684\u5185\u5bb9\u7ba1\u7406\u7cfb\u7edf"},"content":{"rendered":"<p><b><\/b>     <\/p>\n<h1>\u5229\u7528 JavaScript \u7684\u96c6\u5408\u548c\u6620\u5c04\u5b9e\u73b0\u9ad8\u6548\u7684\u5185\u5bb9\u7ba1\u7406\u7cfb\u7edf<\/h1>\n<p><span style=\"cursor: pointer\"><i><\/i>\u6536\u85cf<\/span>    <\/p>\n<p>\u76ee\u524d\u7c73\u4e91\u4e0a\u5df2\u7ecf\u6709\u5f88\u591a\u5173\u4e8e<span style=\"color: #FF6600;, Helvetica, Arial, sans-serif;font-size: 14px;background-color: #FFFFFF\">\u6587\u7ae0<\/span>\u7684\u6587\u7ae0\u4e86\uff0c\u81ea\u5df1\u5728\u521d\u6b21\u9605\u8bfb\u8fd9\u4e9b\u6587\u7ae0\u4e2d\uff0c\u4e5f\u89c1\u8bc6\u5230\u4e86\u5f88\u591a\u5b66\u4e60\u601d\u8def\uff1b\u90a3\u4e48\u672c\u6587<span style=\"color: #FF6600;, Helvetica, Arial, sans-serif;font-size: 14px;background-color: #FFFFFF\">\u300a\u5229\u7528 JavaScript \u7684\u96c6\u5408\u548c\u6620\u5c04\u5b9e\u73b0\u9ad8\u6548\u7684\u5185\u5bb9\u7ba1\u7406\u7cfb\u7edf\u300b<\/span>\uff0c\u4e5f\u5e0c\u671b\u80fd\u5e2e\u52a9\u5230\u5927\u5bb6\uff0c\u5982\u679c\u9605\u8bfb\u5b8c\u540e\u771f\u7684\u5bf9\u4f60\u5b66\u4e60<span style=\"color: #FF6600;, Helvetica, Arial, sans-serif;font-size: 14px;background-color: #FFFFFF\">\u6587\u7ae0<\/span>\u6709\u5e2e\u52a9\uff0c\u6b22\u8fce\u52a8\u52a8\u624b\u6307\uff0c\u8bc4\u8bba\u7559\u8a00\u5e76\u5206\u4eab~<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/www.17golang.com\/uploads\/20241122\/1732241438673fe81ed1555.jpg\" class=\"aligncenter\" title=\"\u5229\u7528 JavaScript \u7684\u96c6\u5408\u548c\u6620\u5c04\u5b9e\u73b0\u9ad8\u6548\u7684\u5185\u5bb9\u7ba1\u7406\u7cfb\u7edf\u63d2\u56fe\" alt=\"\u5229\u7528 JavaScript \u7684\u96c6\u5408\u548c\u6620\u5c04\u5b9e\u73b0\u9ad8\u6548\u7684\u5185\u5bb9\u7ba1\u7406\u7cfb\u7edf\u63d2\u56fe\" \/><\/p>\n<p>javascript \u63d0\u4f9b\u4e86\u51e0\u79cd\u5f3a\u5927\u7684\u6570\u636e\u7ed3\u6784\u6765\u5904\u7406\u6570\u636e\u96c6\u5408\u3002\u5176\u4e2d\uff0cmap \u548c set \u5bf9\u4e8e\u67d0\u4e9b\u7c7b\u578b\u7684\u4efb\u52a1\u7279\u522b\u6709\u7528\u3002\u5728\u672c\u535a\u5ba2\u4e2d\uff0c\u6211\u4eec\u5c06\u63a2\u8ba8\u4f7f\u7528 map \u548c set \u89e3\u51b3\u5e38\u89c1\u7f16\u7a0b\u95ee\u9898\u7684\u73b0\u5b9e\u793a\u4f8b\u3002<\/p>\n<p><strong>\u7406\u89e3\u5730\u56fe\u548c\u96c6\u5408<\/strong><br \/> \u5728\u6df1\u5165\u793a\u4f8b\u4e4b\u524d\uff0c\u8ba9\u6211\u4eec\u5feb\u901f\u56de\u987e\u4e00\u4e0b javascript \u4e2d\u7684 map \u548c set \u662f\u4ec0\u4e48\u3002 <\/p>\n<p><strong>\u5730\u56fe<\/strong><br \/> map \u662f\u952e\u503c\u5bf9\u7684\u96c6\u5408\uff0c\u5176\u4e2d\u952e\u548c\u503c\u53ef\u4ee5\u662f\u4efb\u4f55\u7c7b\u578b\u3002\u5b83\u7ef4\u62a4\u5143\u7d20\u7684\u987a\u5e8f\uff0c\u60a8\u53ef\u4ee5\u6309\u7167\u6dfb\u52a0\u7684\u987a\u5e8f\u8fed\u4ee3\u6761\u76ee\u3002<\/p>\n<p><strong>\u4e3b\u8981\u7279\u70b9\uff1a<\/strong><\/p>\n<ul>\n<li>\u5b58\u50a8\u952e\u503c\u5bf9<\/li>\n<li>\u5bc6\u94a5\u53ef\u4ee5\u662f\u4efb\u4f55\u7c7b\u578b<\/li>\n<li>\u7ef4\u6301\u63d2\u5165\u987a\u5e8f<\/li>\n<\/ul>\n<p><strong>\u8bbe\u7f6e<\/strong><br \/> \u96c6\u5408\u662f\u552f\u4e00\u503c\u7684\u96c6\u5408\u3002\u5b83\u7c7b\u4f3c\u4e8e\u6570\u7ec4\uff0c\u4f46 set \u53ea\u80fd\u5305\u542b\u552f\u4e00\u503c\uff0c\u8fd9\u610f\u5473\u7740\u4e0d\u5141\u8bb8\u91cd\u590d\u3002<\/p>\n<p><strong>\u4e3b\u8981\u7279\u70b9\uff1a<\/strong><\/p>\n<ul>\n<li>\u5b58\u50a8\u552f\u4e00\u503c<\/li>\n<li>\u53ef\u4ee5\u662f\u4efb\u4f55\u7c7b\u578b<\/li>\n<li>\u7ef4\u6301\u63d2\u5165\u987a\u5e8f<\/li>\n<\/ul>\n<p><strong>\u7528\u4e8e\u9ad8\u6548\u5185\u5bb9\u7ba1\u7406\u7cfb\u7edf\u7684 javascript \u96c6\u5408\u548c\u6620\u5c04<\/strong><br \/> \u6709\u6548\u7ba1\u7406\u6587\u7ae0\u53ca\u5176\u76f8\u5173\u6807\u7b7e\u5bf9\u4e8e\u4efb\u4f55\u5185\u5bb9\u7ba1\u7406\u7cfb\u7edf (cms) \u90fd\u81f3\u5173\u91cd\u8981\u3002 javascript \u63d0\u4f9b\u4e86\u5f3a\u5927\u7684\u6570\u636e\u7ed3\u6784\uff08\u4f8b\u5982 map \u548c set\uff09\uff0c\u53ef\u4ee5\u663e\u7740\u7b80\u5316\u6b64\u8fc7\u7a0b\u3002\u5728\u672c\u535a\u5ba2\u4e2d\uff0c\u6211\u4eec\u5c06\u63a2\u8ba8\u5982\u4f55\u5229\u7528 map \u548c set \u6784\u5efa\u4e00\u4e2a\u7b80\u5355\u800c\u6709\u6548\u7684 cms \u6765\u7ba1\u7406\u6587\u7ae0\u53ca\u5176\u6807\u7b7e\u3002 (\u9605\u8bfb\u66f4\u591a)<\/p>\n<p><strong>\u4e3a\u4ec0\u4e48\u4f7f\u7528\u5730\u56fe\u548c\u96c6\u5408\uff1f<\/strong><\/p>\n<ul>\n<li>map\uff1amap \u662f\u5e26\u952e\u6570\u636e\u9879\u7684\u96c6\u5408\uff0c\u5c31\u50cf\u5bf9\u8c61\u4e00\u6837\u3002\u7136\u800c\uff0c\u5173\u952e\u7684\u533a\u522b\u5728\u4e8e map \u5141\u8bb8\u4efb\u4f55\u7c7b\u578b\u7684\u952e\uff0c\u800c\u4e0d\u4ec5\u4ec5\u662f\u5b57\u7b26\u4e32\u3002\u8fd9\u4f7f\u5176\u6210\u4e3a\u5c06\u6587\u7ae0\u6620\u5c04\u5230\u5176\u8be6\u7ec6\u4fe1\u606f\u7684\u5b8c\u7f8e\u9009\u62e9\u3002<\/li>\n<li>\u96c6\u5408\uff1a\u96c6\u5408\u662f\u552f\u4e00\u503c\u7684\u96c6\u5408\u3002\u5b83\u786e\u4fdd\u6587\u7ae0\u4e2d\u7684\u6bcf\u4e2a\u6807\u7b7e\u90fd\u662f\u552f\u4e00\u7684\uff0c\u6d88\u9664\u4e86\u91cd\u590d\u6807\u7b7e\u7684\u98ce\u9669\u3002<\/li>\n<\/ul>\n<p><strong>\u7b2c 1 \u6b65\uff1a\u521b\u5efa\u6587\u7ae0\u5730\u56fe<\/strong><br \/> \u9996\u5148\uff0c\u6211\u4eec\u521d\u59cb\u5316\u4e00\u4e2a map \u6765\u5b58\u50a8\u6211\u4eec\u7684\u6587\u7ae0\u3002\u6bcf\u7bc7\u6587\u7ae0\u90fd\u6709\u4e00\u4e2a\u552f\u4e00\u7684\u6807\u8bc6\u7b26\u548c\u8be6\u7ec6\u4fe1\u606f\uff0c\u5305\u62ec\u6807\u9898\u548c\u6807\u7b7e\u3002<\/p>\n<pre>const articles = new map();\n\n<\/pre>\n<p><strong>\u7b2c 2 \u6b65\uff1a\u6dfb\u52a0\u5e26\u6709\u6807\u7b7e\u7684\u6587\u7ae0<\/strong><br \/> \u63a5\u4e0b\u6765\uff0c\u6211\u4eec\u5411\u5730\u56fe\u6dfb\u52a0\u4e00\u4e9b\u6587\u7ae0\u3002\u6bcf\u7bc7\u6587\u7ae0\u90fd\u8868\u793a\u4e3a\u4e00\u4e2a\u5e26\u6709\u6807\u9898\u548c\u4e00\u7ec4\u6807\u7b7e\u7684\u5bf9\u8c61\u3002<\/p>\n<pre>\/\/ adding articles with tags\narticles.set('article1', {\n  title: 'understanding javascript',\n  tags: new set(['javascript', 'programming', 'web development'])\n});\narticles.set('article2', {\n  title: 'introduction to css',\n  tags: new set(['css', 'design', 'web development'])\n});\n\n<\/pre>\n<p><strong>\u7b2c 3 \u6b65\uff1a\u5411\u6587\u7ae0\u6dfb\u52a0\u65b0\u6807\u7b7e<\/strong><br \/> \u6211\u4eec\u53ef\u4ee5\u4f7f\u7528 set \u7684 add \u65b9\u6cd5\u8f7b\u677e\u5730\u5411\u6587\u7ae0\u6dfb\u52a0\u65b0\u6807\u7b7e\u3002<\/p>\n<pre>\/\/ adding a new tag to an article\narticles.get('article1').tags.add('es6');\nconsole.log(articles.get('article1').tags); \/\/ output: set { 'javascript', 'programming', 'web development', 'es6' }\n\n<\/pre>\n<p><strong>\u7b2c 4 \u6b65\uff1a\u68c0\u67e5\u7279\u5b9a\u6807\u7b7e<\/strong><br \/> \u8981\u68c0\u67e5\u4e00\u7bc7\u6587\u7ae0\u662f\u5426\u5177\u6709\u7279\u5b9a\u6807\u7b7e\uff0c\u6211\u4eec\u4f7f\u7528 set \u7684 has \u65b9\u6cd5\u3002<\/p>\n<pre>\/\/ checking if an article has a specific tag\nconsole.log(articles.get('article2').tags.has('design')); \/\/ output: true\n\n<\/pre>\n<p><strong>\u7b2c 5 \u6b65\uff1a\u8fed\u4ee3\u6587\u7ae0\u53ca\u5176\u6807\u7b7e<\/strong><br \/> \u6700\u540e\uff0c\u6211\u4eec\u53ef\u4ee5\u4f7f\u7528 for&#8230;of \u5faa\u73af\u8fed\u4ee3\u6587\u7ae0\u53ca\u5176\u6807\u7b7e\u3002<\/p>\n<pre>\/\/ Iterating over articles and their tags\nfor (let [articleId, articleDetails] of articles) {\n  console.log(`${articleDetails.title}: ${[...articleDetails.tags].join(', ')}`);\n}\n\/\/ Output:\n\/\/ Understanding JavaScript: JavaScript, Programming, Web Development, ES6\n\/\/ Introduction to CSS: CSS, Design, Web Development\n\n<\/pre>\n<p>\u9605\u8bfb\u5168\u6587 &#8211; \u5982\u4f55\u638c\u63e1 javascript \u6620\u5c04\u548c\u96c6\u5408 <\/p>\n<p><strong>\u7ed3\u8bba<\/strong><br \/> \u5728 javascript \u4e2d\u4f7f\u7528 map \u548c set \u63d0\u4f9b\u4e86\u4e00\u79cd\u5728 cms \u4e2d\u7ba1\u7406\u6587\u7ae0\u53ca\u5176\u6807\u7b7e\u7684\u5f3a\u5927\u65b9\u6cd5\u3002 map \u5141\u8bb8\u6211\u4eec\u4f7f\u7528\u552f\u4e00\u6807\u8bc6\u7b26\u6709\u6548\u5730\u5b58\u50a8\u548c\u8bbf\u95ee\u6587\u7ae0\uff0c\u800c set \u786e\u4fdd\u6bcf\u4e2a\u6807\u7b7e\u5728\u6587\u7ae0\u4e2d\u662f\u552f\u4e00\u7684\u3002\u8fd9\u79cd\u7ec4\u5408\u4e3a\u5904\u7406\u5185\u5bb9\u53ca\u5176\u76f8\u5173\u5143\u6570\u636e\u63d0\u4f9b\u4e86\u5f3a\u5927\u7684\u89e3\u51b3\u65b9\u6848\uff0c\u4f7f\u60a8\u7684 cms \u66f4\u9ad8\u6548\u4e14\u66f4\u6613\u4e8e\u7ef4\u62a4\u3002<\/p>\n<p>\u597d\u4e86\uff0c\u672c\u6587\u5230\u6b64\u7ed3\u675f\uff0c\u5e26\u5927\u5bb6\u4e86\u89e3\u4e86\u300a\u5229\u7528 JavaScript \u7684\u96c6\u5408\u548c\u6620\u5c04\u5b9e\u73b0\u9ad8\u6548\u7684\u5185\u5bb9\u7ba1\u7406\u7cfb\u7edf\u300b\uff0c\u5e0c\u671b\u672c\u6587\u5bf9\u4f60\u6709\u6240\u5e2e\u52a9\uff01\u5173\u6ce8\u7c73\u4e91\u516c\u4f17\u53f7\uff0c\u7ed9\u5927\u5bb6\u5206\u4eab\u66f4\u591a\u6587\u7ae0\u77e5\u8bc6\uff01<\/p>\n<p>      \u7248\u672c\u58f0\u660e \u672c\u6587\u8f6c\u8f7d\u4e8e\uff1adev.to \u5982\u6709\u4fb5\u72af\uff0c\u8bf7\u8054\u7cfb\u5220\u9664    <\/p>\n<dl>\n<dt><\/dt>\n<dd>\n   \u4e3a\u4ec0\u4e48\u6211\u4f7f\u7528 !important 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