{"id":3284,"date":"2024-11-10T17:15:34","date_gmt":"2024-11-10T09:15:34","guid":{"rendered":"https:\/\/fwq.ai\/blog\/3284\/"},"modified":"2024-11-10T17:15:34","modified_gmt":"2024-11-10T09:15:34","slug":"%e5%a6%82%e4%bd%95%e6%a0%88%e6%ba%a2%e5%87%bajs","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/3284\/","title":{"rendered":"\u5982\u4f55\u6808\u6ea2\u51fajs"},"content":{"rendered":"<blockquote><p>\n  javascript \u6808\u6ea2\u51fa\u662f\u4e00\u79cd\u56e0\u5d4c\u5957\u51fd\u6570\u8fc7\u591a\u800c\u5bfc\u81f4\u5185\u5b58\u4e0d\u8db3\u7684\u5185\u5b58\u6ea2\u51fa\u9519\u8bef\u3002\u907f\u514d\u6808\u6ea2\u51fa\u7684\u6280\u5de7\u5305\u62ec\uff1a1. \u907f\u514d\u6df1\u5ea6\u5d4c\u5957\u9012\u5f52\u6216\u5faa\u73af\uff1b2. \u4f7f\u7528\u5c3e\u9012\u5f52\u4f18\u5316\u9012\u5f52\u8c03\u7528\uff1b3. \u4f18\u5316\u6570\u636e\u7ed3\u6784\u4f7f\u7528\u4ee5\u51cf\u5c11\u5185\u5b58\u6d88\u8017\uff1b4. \u8003\u8651\u4f7f\u7528\u975e\u5806\u6808\u5185\u5b58\u7ba1\u7406\u6280\u672f\uff08\u5982 webassembly\uff09\u3002\n<\/p><\/blockquote>\n<p><img decoding=\"async\" src=\"https:\/\/img.php.cn\/upload\/article\/202411\/08\/2024110809033511364.jpg\" class=\"aligncenter\" title=\"\u5982\u4f55\u6808\u6ea2\u51fajs\u63d2\u56fe\" alt=\"\u5982\u4f55\u6808\u6ea2\u51fajs\u63d2\u56fe\" \/><\/p>\n<p><strong>\u5982\u4f55\u5b9e\u73b0 JavaScript \u6808\u6ea2\u51fa<\/strong><\/p>\n<p>JavaScript \u6808\u6ea2\u51fa\u662f\u4e00\u79cd\u5728\u8fd0\u884c\u65f6 JavaScript \u5f15\u64ce\u4e2d\u521b\u5efa\u7684\u5185\u5b58\u6ea2\u51fa\u9519\u8bef\u3002\u5f53\u51fd\u6570\u5d4c\u5957\u8fc7\u591a\u65f6\uff0c\u5c31\u4f1a\u51fa\u73b0\u8fd9\u79cd\u60c5\u51b5\uff0c\u5bfc\u81f4\u5806\u6808\u7a7a\u95f4\u4e0d\u8db3\u4ee5\u5b58\u50a8\u6240\u6709\u51fd\u6570\u8c03\u7528\u3002<\/p>\n<p><strong>\u9020\u6210\u6808\u6ea2\u51fa\u7684\u539f\u56e0<\/strong><\/p>\n<ul>\n<li> <strong>\u9012\u5f52\u8c03\u7528\u8fc7\u6df1\uff1a<\/strong>\u5f53\u51fd\u6570\u4ee5\u9012\u5f52\u65b9\u5f0f\u8c03\u7528\u81ea\u8eab\u592a\u591a\u6b21\u65f6\uff0c\u4f1a\u6d88\u8017\u5927\u91cf\u7684\u5806\u6808\u7a7a\u95f4\u3002<\/li>\n<li> <strong>\u5faa\u73af\u5d4c\u5957\u8fc7\u591a\uff1a<\/strong>\u7c7b\u4f3c\u4e8e\u9012\u5f52\u8c03\u7528\uff0c\u5d4c\u5957\u8fc7\u591a\u5faa\u73af\u4e5f\u4f1a\u6d88\u8017\u5927\u91cf\u5806\u6808\u7a7a\u95f4\u3002<\/li>\n<li> <strong>\u5927\u91cf\u6570\u636e\u7ed3\u6784\uff1a<\/strong>\u5728\u51fd\u6570\u5185\u521b\u5efa\u5927\u91cf\u6570\u7ec4\u3001\u5bf9\u8c61\u6216\u5176\u4ed6\u6570\u636e\u7ed3\u6784\u4e5f\u4f1a\u589e\u52a0\u5806\u6808\u4f7f\u7528\u91cf\u3002<\/li>\n<\/ul>\n<p><strong>\u5982\u4f55\u89e6\u53d1\u6808\u6ea2\u51fa<\/strong><\/p>\n<p>\u5728 JavaScript \u4e2d\u89e6\u53d1\u6808\u6ea2\u51fa\u6709\u591a\u79cd\u65b9\u6cd5\uff1a<\/p>\n<p><strong>1. \u9012\u5f52\u8c03\u7528\uff1a<\/strong><\/p>\n<pre>function factorial(n) {\n  if (n == 0) {\n    return 1;\n  }\n  return n * factorial(n - 1);\n}<\/pre>\n<p>  \u767b\u5f55\u540e\u590d\u5236   <\/p>\n<p>\u5728\u8fd9\u79cd\u60c5\u51b5\u4e0b\uff0cfactorial \u51fd\u6570\u4ee5\u9012\u5f52\u65b9\u5f0f\u8c03\u7528\u81ea\u8eab\uff0c\u76f4\u5230 n \u4e3a 0\u3002\u5728\u5927\u91cf\u6570\u503c\u4e0b\uff0c\u8fd9\u4f1a\u5bfc\u81f4\u51fd\u6570\u5d4c\u5957\u5f97\u592a\u6df1\u5e76\u89e6\u53d1\u6808\u6ea2\u51fa\u3002<\/p>\n<p><strong>2. \u5faa\u73af\u5d4c\u5957\uff1a<\/strong><\/p>\n<pre>for (let i = 0; i &lt; 100000; i++) {\n  for (let j = 0; j &lt; 100000; j++) {\n    \/\/ ...\n  }\n}<\/pre>\n<p>  \u767b\u5f55\u540e\u590d\u5236   <\/p>\n<p>\u6b64\u4ee3\u7801\u5d4c\u5957\u4e86\u4e24\u4e2a\u5faa\u73af\uff0c\u8fd9\u5c06\u6d88\u8017\u5927\u91cf\u5806\u6808\u7a7a\u95f4\uff0c\u6700\u7ec8\u5bfc\u81f4\u6808\u6ea2\u51fa\u3002<\/p>\n<p><strong>3. \u5927\u91cf\u6570\u636e\u7ed3\u6784\uff1a<\/strong><\/p>\n<pre>let arr = [];\nfor (let i = 0; i &lt; 1000000; i++) {\n  arr.push(i);\n}<\/pre>\n<p>  \u767b\u5f55\u540e\u590d\u5236   <\/p>\n<p>\u901a\u8fc7\u4e0d\u65ad\u5c06\u9879\u76ee\u6dfb\u52a0\u5230\u6570\u7ec4 arr \u4e2d\uff0c\u8fd9\u4e2a\u4ee3\u7801\u4f1a\u521b\u5efa\u5927\u91cf\u7684\u6570\u636e\u7ed3\u6784\uff0c\u6700\u7ec8\u8017\u5c3d\u5806\u6808\u7a7a\u95f4\u3002<\/p>\n<p><strong>\u907f\u514d\u6808\u6ea2\u51fa\u7684\u6280\u5de7<\/strong><\/p>\n<ul>\n<li>\u907f\u514d\u6df1\u5ea6\u5d4c\u5957\u9012\u5f52\u6216\u5faa\u73af\u3002<\/li>\n<li>\u4f7f\u7528\u5c3e\u9012\u5f52\u6765\u4f18\u5316\u9012\u5f52\u8c03\u7528\u3002<\/li>\n<li>\u4f18\u5316\u6570\u636e\u7ed3\u6784\u7684\u4f7f\u7528\u4ee5\u51cf\u5c11\u5185\u5b58\u6d88\u8017\u3002<\/li>\n<li>\u8003\u8651\u4f7f\u7528\u975e\u5806\u6808\u5185\u5b58\u7ba1\u7406\u6280\u672f\uff0c\u5982 WebAssembly\u3002<\/li>\n<\/ul>\n<p>\u4ee5\u4e0a\u5c31\u662f\u5982\u4f55\u6808\u6ea2\u51fajs\u7684\u8be6\u7ec6\u5185\u5bb9\uff0c\u66f4\u591a\u8bf7\u5173\u6ce8\u7c73\u4e91\u5176\u5b83\u76f8\u5173\u6587\u7ae0\uff01<\/p>\n","protected":false},"excerpt":{"rendered":"<p>javascript \u6808\u6ea2\u51fa\u662f\u4e00\u79cd\u56e0\u5d4c\u5957\u51fd\u6570\u8fc7\u591a\u800c\u5bfc\u81f4\u5185\u5b58\u4e0d\u8db3\u7684\u5185\u5b58\u6ea2\u51fa\u9519\u8bef\u3002\u907f\u514d\u6808\u6ea2\u51fa\u7684\u6280\u5de7\u5305\u62ec\uff1a1. \u907f\u514d\u6df1\u5ea6\u5d4c\u5957\u9012\u5f52\u6216\u5faa\u73af\uff1b2. \u4f7f\u7528\u5c3e\u9012\u5f52\u4f18\u5316\u9012\u5f52\u8c03\u7528\uff1b3. \u4f18\u5316\u6570\u636e\u7ed3\u6784\u4f7f\u7528\u4ee5\u51cf\u5c11\u5185\u5b58\u6d88\u8017\uff1b4. \u8003\u8651\u4f7f\u7528\u975e\u5806\u6808\u5185\u5b58\u7ba1\u7406\u6280\u672f\uff08\u5982 webassembly\uff09\u3002 \u5982\u4f55\u5b9e\u73b0 JavaScript \u6808\u6ea2\u51fa JavaScript \u6808\u6ea2\u51fa\u662f\u4e00\u79cd\u5728\u8fd0\u884c\u65f6 JavaScript \u5f15\u64ce\u4e2d\u521b\u5efa\u7684\u5185\u5b58\u6ea2\u51fa\u9519\u8bef\u3002\u5f53\u51fd\u6570\u5d4c\u5957\u8fc7\u591a\u65f6\uff0c\u5c31\u4f1a\u51fa\u73b0\u8fd9\u79cd\u60c5\u51b5\uff0c\u5bfc\u81f4\u5806\u6808\u7a7a\u95f4\u4e0d\u8db3\u4ee5\u5b58\u50a8\u6240\u6709\u51fd\u6570\u8c03\u7528\u3002 \u9020\u6210\u6808\u6ea2\u51fa\u7684\u539f\u56e0 \u9012\u5f52\u8c03\u7528\u8fc7\u6df1\uff1a\u5f53\u51fd\u6570\u4ee5\u9012\u5f52\u65b9\u5f0f\u8c03\u7528\u81ea\u8eab\u592a\u591a\u6b21\u65f6\uff0c\u4f1a\u6d88\u8017\u5927\u91cf\u7684\u5806\u6808\u7a7a\u95f4\u3002 \u5faa\u73af\u5d4c\u5957\u8fc7\u591a\uff1a\u7c7b\u4f3c\u4e8e\u9012\u5f52\u8c03\u7528\uff0c\u5d4c\u5957\u8fc7\u591a\u5faa\u73af\u4e5f\u4f1a\u6d88\u8017\u5927\u91cf\u5806\u6808\u7a7a\u95f4\u3002 \u5927\u91cf\u6570\u636e\u7ed3\u6784\uff1a\u5728\u51fd\u6570\u5185\u521b\u5efa\u5927\u91cf\u6570\u7ec4\u3001\u5bf9\u8c61\u6216\u5176\u4ed6\u6570\u636e\u7ed3\u6784\u4e5f\u4f1a\u589e\u52a0\u5806\u6808\u4f7f\u7528\u91cf\u3002 \u5982\u4f55\u89e6\u53d1\u6808\u6ea2\u51fa \u5728 JavaScript \u4e2d\u89e6\u53d1\u6808\u6ea2\u51fa\u6709\u591a\u79cd\u65b9\u6cd5\uff1a 1. \u9012\u5f52\u8c03\u7528\uff1a function factorial(n) { if (n == 0) { return 1; } return n * factorial(n &#8211; 1); } \u767b\u5f55\u540e\u590d\u5236 \u5728\u8fd9\u79cd\u60c5\u51b5\u4e0b\uff0cfactorial \u51fd\u6570\u4ee5\u9012\u5f52\u65b9\u5f0f\u8c03\u7528\u81ea\u8eab\uff0c\u76f4\u5230 n \u4e3a 0\u3002\u5728\u5927\u91cf\u6570\u503c\u4e0b\uff0c\u8fd9\u4f1a\u5bfc\u81f4\u51fd\u6570\u5d4c\u5957\u5f97\u592a\u6df1\u5e76\u89e6\u53d1\u6808\u6ea2\u51fa\u3002 2. \u5faa\u73af\u5d4c\u5957\uff1a for (let i = 0; [&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-3284","post","type-post","status-publish","format-standard","hentry","category-16"],"_links":{"self":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/3284","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=3284"}],"version-history":[{"count":0,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/3284\/revisions"}],"wp:attachment":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/media?parent=3284"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/categories?post=3284"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/tags?post=3284"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}