{"id":52670,"date":"2024-12-03T14:37:46","date_gmt":"2024-12-03T06:37:46","guid":{"rendered":"https:\/\/fwq.ai\/blog\/52670\/"},"modified":"2024-12-03T14:37:46","modified_gmt":"2024-12-03T06:37:46","slug":"javascript-%e4%b8%ad-for-%e5%be%aa%e7%8e%af%e7%9a%84%e7%b1%bb%e5%9e%8b","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/52670\/","title":{"rendered":"JavaScript \u4e2d for \u5faa\u73af\u7684\u7c7b\u578b"},"content":{"rendered":"<p><b><\/b>     <\/p>\n<h1>JavaScript \u4e2d for \u5faa\u73af\u7684\u7c7b\u578b<\/h1>\n<p><span style=\"cursor: pointer\"><i><\/i>\u6536\u85cf<\/span>    <\/p>\n<p>\u5728IT\u884c\u4e1a\u8fd9\u4e2a\u53d1\u5c55\u66f4\u65b0\u901f\u5ea6\u5f88\u5feb\u7684\u884c\u4e1a\uff0c\u53ea\u6709\u4e0d\u505c\u6b62\u7684\u5b66\u4e60\uff0c\u624d\u4e0d\u4f1a\u88ab\u884c\u4e1a\u6240\u6dd8\u6c70\u3002\u5982\u679c\u4f60\u662f\u6587\u7ae0\u5b66\u4e60\u8005\uff0c\u90a3\u4e48\u672c\u6587\u300aJavaScript \u4e2d for \u5faa\u73af\u7684\u7c7b\u578b\u300b\u5c31\u5f88\u9002\u5408\u4f60\uff01\u672c\u7bc7\u5185\u5bb9\u4e3b\u8981\u5305\u62ec##content_title##\uff0c\u5e0c\u671b\u5bf9\u5927\u5bb6\u7684\u77e5\u8bc6\u79ef\u7d2f\u6709\u6240\u5e2e\u52a9\uff0c\u52a9\u529b\u5b9e\u6218\u5f00\u53d1\uff01<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/www.17golang.com\/uploads\/20241122\/17322606386740331ea6faf.jpg\" class=\"aligncenter\" title=\"JavaScript \u4e2d for \u5faa\u73af\u7684\u7c7b\u578b\u63d2\u56fe\" alt=\"JavaScript \u4e2d for \u5faa\u73af\u7684\u7c7b\u578b\u63d2\u56fe\" \/><\/p>\n<p>\u6211\u4eec\u90fd\u77e5\u9053\u5e76\u4e14\u559c\u6b22\u7ecf\u5178\u7684 for \u5faa\u73af\uff0c\u4f46\u662f\u60a8\u77e5\u9053 javascript \u8fd8\u6709\u5176\u4ed6\u4e00\u4e9b\u5f3a\u5927\u7684 for \u5faa\u73af\u9009\u9879\u5417\uff1f<\/p>\n<p>1) for\/in\uff1a\u8fd9\u4e2a\u5bf9\u4e8e\u8fed\u4ee3\u5bf9\u8c61\u7684\u952e\u548c\u64cd\u4f5c\u5bf9\u8c61\u5c5e\u6027\u975e\u5e38\u6709\u7528\u3002<\/p>\n<pre>example:\n\nconst obj = {name: \"javascript\", type: \"language\"};\nfor (let key in obj) {\n    console.log(key); \/\/ outputs \"name\" and \"type\"\n}\n<\/pre>\n<p>2) for\/of\uff1a\u5f53\u60a8\u5173\u6ce8\u7684\u662f\u53ef\u8fed\u4ee3\u5bf9\u8c61\uff08\u4f8b\u5982\u6570\u7ec4\u6216\u5b57\u7b26\u4e32\uff09\u7684\u503c\u800c\u4e0d\u662f\u952e\u6216\u7d22\u5f15\u65f6\uff0c\u8fd9\u662f\u6700\u4f73\u9009\u62e9\u3002 <\/p>\n<p>\u793a\u4f8b\uff1a<\/p>\n<pre>const arr = [\"javascript\", \"is\", \"versatile\"];\n\nfor (let value of arr) {\n\n  console.log(value);\n\n}\n<\/pre>\n<p>3\uff09foreach\uff1a\u8fd9\u662f\u4e00\u4e2a\u5b9d\u77f3\uff0c\u56e0\u4e3a\u5b83\u63d0\u4f9b\u4e86\u4fbf\u5229\u6027\u548c\u53ef\u8bfb\u6027\uff0c\u5e2e\u52a9\u60a8\u7528\u6700\u5c11\u7684\u8bed\u6cd5\u8fed\u4ee3\u6570\u7ec4\uff0c\u56e0\u6b64\u60a8\u53ef\u4ee5\u4e13\u6ce8\u4e8e\u5faa\u73af\u5185\u7684\u903b\u8f91\u800c\u4e0d\u662f\u8fed\u4ee3\u8fc7\u7a0b\u672c\u8eab\u3002<\/p>\n<p>\u793a\u4f8b\uff1a<\/p>\n<pre>const arr = [\"JavaScript\", \"is\", \"versatile\"];\n\narr.forEach(value =&gt; console.log(value));\n<\/pre>\n<p>\u8fd9\u4e9b\u4f60\u6700\u559c\u6b22\u54ea\u4e00\u4e2a\uff1f <\/p>\n<p>\u597d\u4e86\uff0c\u672c\u6587\u5230\u6b64\u7ed3\u675f\uff0c\u5e26\u5927\u5bb6\u4e86\u89e3\u4e86\u300aJavaScript \u4e2d for \u5faa\u73af\u7684\u7c7b\u578b\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   Go gRPC \u670d\u52a1\u5076\u5c14\u51fa\u73b0 Socket Closed \u5f02\u5e38\uff0c\u5982\u4f55\u6392\u67e5\uff1f\n <\/dd>\n<\/dl>\n","protected":false},"excerpt":{"rendered":"<p>JavaScript \u4e2d for \u5faa\u73af\u7684\u7c7b\u578b \u6536\u85cf \u5728IT\u884c\u4e1a\u8fd9\u4e2a\u53d1\u5c55\u66f4\u65b0\u901f\u5ea6\u5f88\u5feb\u7684\u884c\u4e1a\uff0c\u53ea\u6709\u4e0d\u505c\u6b62\u7684\u5b66\u4e60\uff0c\u624d\u4e0d\u4f1a\u88ab\u884c\u4e1a\u6240\u6dd8\u6c70\u3002\u5982\u679c\u4f60\u662f\u6587\u7ae0\u5b66\u4e60\u8005\uff0c\u90a3\u4e48\u672c\u6587\u300aJavaScript \u4e2d for \u5faa\u73af\u7684\u7c7b\u578b\u300b\u5c31\u5f88\u9002\u5408\u4f60\uff01\u672c\u7bc7\u5185\u5bb9\u4e3b\u8981\u5305\u62ec##content_title##\uff0c\u5e0c\u671b\u5bf9\u5927\u5bb6\u7684\u77e5\u8bc6\u79ef\u7d2f\u6709\u6240\u5e2e\u52a9\uff0c\u52a9\u529b\u5b9e\u6218\u5f00\u53d1\uff01 \u6211\u4eec\u90fd\u77e5\u9053\u5e76\u4e14\u559c\u6b22\u7ecf\u5178\u7684 for \u5faa\u73af\uff0c\u4f46\u662f\u60a8\u77e5\u9053 javascript \u8fd8\u6709\u5176\u4ed6\u4e00\u4e9b\u5f3a\u5927\u7684 for \u5faa\u73af\u9009\u9879\u5417\uff1f 1) for\/in\uff1a\u8fd9\u4e2a\u5bf9\u4e8e\u8fed\u4ee3\u5bf9\u8c61\u7684\u952e\u548c\u64cd\u4f5c\u5bf9\u8c61\u5c5e\u6027\u975e\u5e38\u6709\u7528\u3002 example: const obj = {name: &#8220;javascript&#8221;, type: &#8220;language&#8221;}; for (let key in obj) { console.log(key); \/\/ outputs &#8220;name&#8221; and &#8220;type&#8221; } 2) for\/of\uff1a\u5f53\u60a8\u5173\u6ce8\u7684\u662f\u53ef\u8fed\u4ee3\u5bf9\u8c61\uff08\u4f8b\u5982\u6570\u7ec4\u6216\u5b57\u7b26\u4e32\uff09\u7684\u503c\u800c\u4e0d\u662f\u952e\u6216\u7d22\u5f15\u65f6\uff0c\u8fd9\u662f\u6700\u4f73\u9009\u62e9\u3002 \u793a\u4f8b\uff1a const arr = [&#8220;javascript&#8221;, &#8220;is&#8221;, &#8220;versatile&#8221;]; for (let value of arr) { console.log(value); [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[16],"tags":[],"class_list":["post-52670","post","type-post","status-publish","format-standard","hentry","category-16"],"_links":{"self":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/52670","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/comments?post=52670"}],"version-history":[{"count":0,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/52670\/revisions"}],"wp:attachment":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/media?parent=52670"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/categories?post=52670"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/tags?post=52670"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}