{"id":1985,"date":"2024-11-10T11:43:23","date_gmt":"2024-11-10T03:43:23","guid":{"rendered":"https:\/\/fwq.ai\/blog\/1985\/"},"modified":"2024-11-10T11:43:23","modified_gmt":"2024-11-10T03:43:23","slug":"%e4%b8%ba%e4%bb%80%e4%b9%88%e7%9b%b8%e5%90%8c%e4%bb%a3%e7%a0%81%e5%9c%a8%e6%b5%8f%e8%a7%88%e5%99%a8%e3%80%81git-%e5%91%bd%e4%bb%a4%e8%a1%8c%e5%92%8c-node-js-%e4%b8%ad%e8%bf%90%e8%a1%8c%e7%bb%93","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/1985\/","title":{"rendered":"\u4e3a\u4ec0\u4e48\u76f8\u540c\u4ee3\u7801\u5728\u6d4f\u89c8\u5668\u3001Git \u547d\u4ee4\u884c\u548c Node.js \u4e2d\u8fd0\u884c\u7ed3\u679c\u4e0d\u540c\uff1f"},"content":{"rendered":"<p><img decoding=\"async\" src=\"https:\/\/img.php.cn\/upload\/article\/001\/246\/273\/173062512439402.jpg\" class=\"aligncenter\" title=\"\u4e3a\u4ec0\u4e48\u76f8\u540c\u4ee3\u7801\u5728\u6d4f\u89c8\u5668\u3001Git \u547d\u4ee4\u884c\u548c Node.js \u4e2d\u8fd0\u884c\u7ed3\u679c\u4e0d\u540c\uff1f\u63d2\u56fe\" alt=\"\u4e3a\u4ec0\u4e48\u76f8\u540c\u4ee3\u7801\u5728\u6d4f\u89c8\u5668\u3001Git \u547d\u4ee4\u884c\u548c Node.js \u4e2d\u8fd0\u884c\u7ed3\u679c\u4e0d\u540c\uff1f\u63d2\u56fe\" \/><\/p>\n<p><strong>\u4ee3\u7801\u6267\u884c\u65b9\u5f0f\u4e0d\u540c\uff0c\u8fd0\u884c\u7ed3\u679c\u5dee\u5f02\u7684\u539f\u56e0<\/strong><\/p>\n<p>\u4e00\u6bb5\u4ee3\u7801\u5728\u4e0d\u540c\u73af\u5883\u4e0b\u7684\u6267\u884c\u7ed3\u679c\u53ef\u80fd\u5b58\u5728\u5dee\u5f02\u3002\u4e86\u89e3\u5bfc\u81f4\u8fd9\u79cd\u60c5\u51b5\u7684\u539f\u56e0\u5bf9\u4e8e\u7f16\u5199\u5065\u58ee\u7684\u4ee3\u7801\u81f3\u5173\u91cd\u8981\u3002<\/p>\n<p>\u672c\u4f8b\u4e2d\uff0c\u4ee3\u7801\u5728\u6d4f\u89c8\u5668\u6216 Git \u547d\u4ee4\u884c\u4e2d\u8fd0\u884c\u65f6\uff0c\u8f93\u51fa\u4e3a 2\uff0c\u800c\u5728\u72ec\u7acb\u7684 JS \u6587\u4ef6\u4e2d\u4f7f\u7528 Node.js \u547d\u4ee4\u8fd0\u884c\u65f6\uff0c\u8f93\u51fa\u5374\u4e3a undefined\u3002\u5176\u539f\u56e0\u5982\u4e0b\uff1a<\/p>\n<ul>\n<li> <strong>\u4e0d\u540c\u6267\u884c\u73af\u5883\uff1a<\/strong>\u6d4f\u89c8\u5668\u548c Git \u547d\u4ee4\u884c\u901a\u5e38\u4f7f\u7528 JavaScript \u6b63\u5e38\u6a21\u5f0f\u3002\u5728\u6b63\u5e38\u6a21\u5f0f\u4e0b\uff0c\u5168\u5c40\u5bf9\u8c61\u662f window\uff0cthis \u6307\u5411 window \u5bf9\u8c61\u3002\u56e0\u6b64\uff0c\u5728 foo() \u51fd\u6570\u4e2d\uff0cthis.a \u7b49\u540c\u4e8e window.a\uff0c\u6307\u5411\u53d8\u91cf a\u3002<\/li>\n<li> <strong>\u4e25\u683c\u6a21\u5f0f\uff1a<\/strong>Node.js \u9ed8\u8ba4\u4f7f\u7528 JavaScript \u4e25\u683c\u6a21\u5f0f\u3002\u0e43\u0e19\u0e42\u0e2b\u0e21\u0e14\u0e01\u0e32\u0e23\u0e17\u0e33\u0e07\u0e32\u0e19\u0e41\u0e1a\u0e1a\u0e19\u0e35\u0e49 this \u6307\u5411 undefined\uff0c\u56e0\u4e3a\u5b83\u6ca1\u6709\u7ed1\u5b9a\u5230\u4efb\u4f55\u7a97\u53e3\u6216\u5168\u5c40\u5bf9\u8c61\u3002\u56e0\u6b64\uff0c\u5728 foo() \u51fd\u6570\u4e2d\uff0cthis.a \u7b49\u4e8e undefined\u3002<\/li>\n<\/ul>\n<p>\u8981\u89e3\u51b3\u6b64\u95ee\u9898\uff0c\u53ef\u4ee5\u5728\u4ee3\u7801\u4e2d\u663e\u5f0f\u6307\u5b9a this \u503c\u3002\u4f8b\u5982\uff0c\u53ef\u4ee5\u5728 foo() \u51fd\u6570\u4e2d\u6dfb\u52a0 var that = this; 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