{"id":3492,"date":"2024-11-10T09:52:36","date_gmt":"2024-11-10T01:52:36","guid":{"rendered":"https:\/\/fwq.ai\/blog\/3492\/"},"modified":"2024-11-10T09:52:36","modified_gmt":"2024-11-10T01:52:36","slug":"%e5%a6%82%e4%bd%95%e7%90%86%e8%a7%a3js%e5%87%bd%e6%95%b0","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/3492\/","title":{"rendered":"\u5982\u4f55\u7406\u89e3js\u51fd\u6570"},"content":{"rendered":"<blockquote><p>\n  javascript \u51fd\u6570\u662f\u4e00\u4e2a\u53ef\u91cd\u590d\u8c03\u7528\u7684\u4ee3\u7801\u5757\uff0c\u7528\u4e8e\u6267\u884c\u7279\u5b9a\u4efb\u52a1\uff0c\u5b83\u4eec\u53ef\u901a\u8fc7 function 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<strong>\u51fd\u6570\u4f53\uff1a<\/strong>\u51fd\u6570\u4f53\u5305\u542b\u8981\u6267\u884c\u7684\u4ee3\u7801\u3002\u5f53\u51fd\u6570\u88ab\u8c03\u7528\u65f6\uff0c\u5b83\u7684\u4ee3\u7801\u4f1a\u88ab\u6267\u884c\u3002<\/li>\n<li> <strong>\u8fd4\u56de\u503c\uff1a<\/strong>\u51fd\u6570\u53ef\u4ee5\u8fd4\u56de\u4e00\u4e2a\u503c\uff0c\u4e5f\u53ef\u4ee5\u4e0d\u8fd4\u56de\u3002\u8fd4\u56de\u7684\u503c\u53ef\u4ee5\u7531\u8c03\u7528\u5b83\u7684\u4ee3\u7801\u4f7f\u7528\u3002<\/li>\n<\/ul>\n<p><strong>\u51fd\u6570\u7684\u7c7b\u578b<\/strong><\/p>\n<p>\u6709\u4e24\u79cd\u7c7b\u578b\u7684 JavaScript \u51fd\u6570\uff1a<\/p>\n<ul>\n<li>\n<p><strong>\u58f0\u660e\u51fd\u6570\uff1a<\/strong>\u4f7f\u7528 function \u5173\u952e\u5b57\u58f0\u660e\uff0c\u4f8b\u5982\uff1a<\/p>\n<pre>function myFunction() {\n\/\/ ...\n}<\/pre>\n<p>  \u767b\u5f55\u540e\u590d\u5236  <\/li>\n<li>\n<p><strong>\u533f\u540d\u51fd\u6570\uff08\u51fd\u6570\u8868\u8fbe\u5f0f\uff09\uff1a<\/strong>\u4e0d\u4f7f\u7528 function \u5173\u952e\u5b57\u58f0\u660e\uff0c\u800c\u662f\u4f5c\u4e3a\u8868\u8fbe\u5f0f\u7684\u4e00\u90e8\u5206\uff0c\u4f8b\u5982\uff1a<\/p>\n<pre>const myFunction = function() {\n\/\/ ...\n};<\/pre>\n<p>  \u767b\u5f55\u540e\u590d\u5236  <\/li>\n<\/ul>\n<p><strong>\u51fd\u6570\u7684\u4f5c\u7528<\/strong><\/p>\n<p>\u51fd\u6570\u5728 JavaScript \u4e2d\u6709\u8bb8\u591a\u7528\u9014\uff1a<\/p>\n<ul>\n<li>\u5206\u89e3\u4ee3\u7801\u548c\u63d0\u9ad8\u53ef\u8bfb\u6027<\/li>\n<li>\u91cd\u7528\u4ee3\u7801\u4ee5\u907f\u514d\u91cd\u590d<\/li>\n<li>\u7ec4\u7ec7\u6570\u636e\u548c\u6267\u884c\u8ba1\u7b97<\/li>\n<li>\u63a7\u5236\u7a0b\u5e8f\u6d41<\/li>\n<\/ul>\n<p><strong>\u793a\u4f8b<\/strong><\/p>\n<pre>\/\/ \u58f0\u660e\u4e00\u4e2a\u8ba1\u7b97\u5706\u5f62\u9762\u79ef\u7684\u51fd\u6570\nfunction calculateArea(radius) {\n  \/\/ \u8ba1\u7b97\u9762\u79ef\n  const area = Math.PI * radius * radius;\n\n  \/\/ \u8fd4\u56de\u8ba1\u7b97\u7684\u9762\u79ef\n  return area;\n}\n\n\/\/ 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JavaScript \u4e2d\u6a21\u5757\u5316\u548c\u4ee3\u7801\u91cd\u7528\u7684\u57fa\u672c\u7ec4\u6210\u90e8\u5206\u3002 \u5982\u4f55\u7406\u89e3\u51fd\u6570\uff1f \u7406\u89e3\u51fd\u6570\u6d89\u53ca\u4ee5\u4e0b\u51e0\u4e2a\u65b9\u9762\uff1a \u5b9a\u4e49\uff1a\u51fd\u6570\u901a\u8fc7\u4ee5\u4e0b\u8bed\u6cd5\u5b9a\u4e49\uff1a function functionName(parameters) { \/\/ \u51fd\u6570\u4f53\uff08\u8981\u6267\u884c\u7684\u4ee3\u7801\uff09 } \u767b\u5f55\u540e\u590d\u5236 \u53c2\u6570\uff1a\u51fd\u6570\u53ef\u4ee5\u63a5\u53d7\u96f6\u4e2a\u6216\u591a\u4e2a\u8f93\u5165\u503c\uff0c\u79f0\u4e3a\u53c2\u6570\u3002 \u51fd\u6570\u4f53\uff1a\u51fd\u6570\u4f53\u5305\u542b\u8981\u6267\u884c\u7684\u4ee3\u7801\u3002\u5f53\u51fd\u6570\u88ab\u8c03\u7528\u65f6\uff0c\u5b83\u7684\u4ee3\u7801\u4f1a\u88ab\u6267\u884c\u3002 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