{"id":14688,"date":"2024-02-05T10:45:49","date_gmt":"2024-02-05T07:15:49","guid":{"rendered":"https:\/\/www.itpiran.net\/blog\/?p=14688"},"modified":"2024-02-05T10:45:49","modified_gmt":"2024-02-05T07:15:49","slug":"what-is-node-js","status":"publish","type":"post","link":"https:\/\/www.itpiran.net\/blog\/zh\/tutorials\/what-is-node-js\/","title":{"rendered":"\u4ec0\u4e48\u662fNodeJS\uff1f"},"content":{"rendered":"<h2 id=\"%d9%85%d9%82%d8%af%d9%85%d9%87\">\u4ecb\u7ecd<\/h2>\n<p>Node.js \u662f\u4e00\u4e2a\u5f00\u6e90\u3001\u8de8\u5e73\u53f0\u7684 JavaScript \u8fd0\u884c\u65f6\u73af\u5883\uff0c\u5b83\u5141\u8bb8\u5f00\u53d1\u8005\u4f7f\u7528 JavaScript \u521b\u5efa\u524d\u7aef\u548c\u540e\u7aef\u5e94\u7528\u7a0b\u5e8f\u3002\u5b83\u7531 Ryan Dahl \u4e8e 2009 \u5e74\u53d1\u5e03\u3002\u5728\u672c\u6587\u4e2d\uff0c\u60a8\u5c06\u4e86\u89e3 Node.js \u5e76\u5b66\u4e60\u4ee5\u4e0b\u5185\u5bb9\uff1a<\/p>\n<ul>\n<li>\u4ec0\u4e48\u662fNode.js\uff1f<\/li>\n<li>Node.js\u73af\u5883\u4e0e\u6d4f\u89c8\u5668\u73af\u5883\u7684\u533a\u522b\u3002.<\/li>\n<li>\u4e3a\u4ec0\u4e48\u4f60\u5e94\u8be5\u5b66\u4e60Node.js\uff1f.<\/li>\n<li>\u5982\u4f55\u5f00\u59cb\u4f7f\u7528Node.js\u3002.<\/li>\n<li>\u5e2e\u52a9\u4f60\u5b66\u4e60Node.js\u7684\u8d44\u6e90\u3002.<\/li>\n<\/ul>\n<h2 id=\"node-js-%da%86%db%8c%d8%b3%d8%aa%d8%9f\">\u4ec0\u4e48\u662fNode.js\uff1f<\/h2>\n<p>Node.js \u662f\u4e00\u4e2a\u5f00\u6e90\u7684\u3001\u8de8\u5e73\u53f0\u7684 JavaScript \u8fd0\u884c\u65f6\u73af\u5883\u3002\u8fd9\u770b\u8d77\u6765\u4f3c\u4e4e\u662f\u4e00\u4e2a\u7b80\u5355\u660e\u4e86\u7684\u7b54\u6848\u3002\u4f46\u5bf9\u4e8e\u521d\u5b66\u8005\u6765\u8bf4\uff0c\u8fd9\u4e2a\u5b9a\u4e49\u53ef\u80fd\u4f1a\u5f15\u53d1\u66f4\u591a\u7591\u95ee\u3002\u6240\u4ee5\u8ba9\u6211\u4eec\u6765\u8be6\u7ec6\u5206\u6790\u4e00\u4e0b\uff0c\u5f04\u660e\u767d\u5b83\u7684\u542b\u4e49\u3002.<\/p>\n<ul>\n<li>Node.js \u662f\u5f00\u6e90\u7684\uff1a\u8fd9\u610f\u5473\u7740 Node.js \u7684\u6e90\u4ee3\u7801\u662f\u516c\u5f00\u7684\uff0c\u7531\u6765\u81ea\u4e16\u754c\u5404\u5730\u7684\u8d21\u732e\u8005\u7ef4\u62a4\u3002Node.js \u8d21\u732e\u6307\u5357\u4f1a\u6307\u5bfc\u60a8\u5982\u4f55\u505a\u51fa\u8d21\u732e\u3002.<\/li>\n<li>Node.js \u662f\u8de8\u5e73\u53f0\u7684\uff1aNode.js \u4e0d\u4f9d\u8d56\u4e8e\u4efb\u4f55\u64cd\u4f5c\u7cfb\u7edf\u8f6f\u4ef6\u3002\u5b83\u53ef\u4ee5\u5728 Linux\u3001macOS \u6216 Windows \u4e0a\u8fd0\u884c\u3002.<\/li>\n<li>Node.js \u662f\u4e00\u4e2a JavaScript \u8fd0\u884c\u65f6\u73af\u5883\uff1a\u5f53\u4f60\u5728\u6587\u672c\u7f16\u8f91\u5668\u4e2d\u7f16\u5199 JavaScript \u4ee3\u7801\u65f6\uff0c\u9664\u975e\u4f60\u8fd0\u884c\uff08\u6216\u6267\u884c\uff09\u5b83\uff0c\u5426\u5219\u8fd9\u6bb5\u4ee3\u7801\u4e0d\u4f1a\u6267\u884c\u4efb\u4f55\u64cd\u4f5c\u3002\u800c\u4f60\u9700\u8981\u4e00\u4e2a\u8fd0\u884c\u65f6\u73af\u5883\u6765\u8fd0\u884c\u4f60\u7684\u4ee3\u7801\u3002.<\/li>\n<\/ul>\n<p>\u50cf Chrome \u548c Firefox \u8fd9\u6837\u7684\u6d4f\u89c8\u5668\u90fd\u6709\u8fd0\u884c\u65f6\u73af\u5883\uff0c\u6240\u4ee5\u5b83\u4eec\u624d\u80fd\u8fd0\u884c JavaScript \u4ee3\u7801\u3002\u5728 Node.js \u51fa\u73b0\u4e4b\u524d\uff0cJavaScript \u53ea\u80fd\u5728\u6d4f\u89c8\u5668\u4e2d\u8fd0\u884c\uff0c\u800c\u4e14\u4ec5\u9650\u4e8e\u6784\u5efa\u524d\u7aef\u5e94\u7528\u7a0b\u5e8f\u3002.<\/p>\n<p>Node.js \u63d0\u4f9b\u4e86\u4e00\u4e2a\u6d4f\u89c8\u5668\u5916\u7684\u8fd0\u884c\u65f6\u73af\u5883\u3002\u5b83\u57fa\u4e8e Chrome \u7684 V8 JavaScript \u5f15\u64ce\u6784\u5efa\u3002\u8fd9\u4f7f\u5f97\u60a8\u53ef\u4ee5\u4f7f\u7528\u81ea\u5df1\u719f\u6089\u7684 JavaScript \u7f16\u7a0b\u8bed\u8a00\u6765\u521b\u5efa\u5e94\u7528\u7a0b\u5e8f\u3002.<\/p>\n<h2 id=\"%d8%aa%d9%81%d8%a7%d9%88%d8%aa-%d8%a8%db%8c%d9%86-%d9%85%d8%ad%db%8c%d8%b7-%d9%87%d8%a7%db%8c-%d8%a7%d8%ac%d8%b1%d8%a7-%d9%85%d8%b1%d9%88%d8%b1%da%af%d8%b1-%d9%88-node-js\">\u6d4f\u89c8\u5668\u8fd0\u884c\u65f6\u548cNode.js\u8fd0\u884c\u65f6\u4e4b\u95f4\u7684\u5dee\u5f02<\/h2>\n<p>\u6d4f\u89c8\u5668\u548cNode.js\u90fd\u80fd\u8fd0\u884cJavaScript\u7a0b\u5e8f\u3002\u4f46\u4e24\u8005\u4e4b\u95f4\u5b58\u5728\u4e00\u4e9b\u5173\u952e\u533a\u522b\uff0c\u60a8\u5e94\u8be5\u4e86\u89e3\u3002\u8fd9\u4e9b\u533a\u522b\u5305\u62ec\u4ee5\u4e0b\u51e0\u70b9\u3002.<\/p>\n<h5 id=\"%d8%af%d8%b3%d8%aa%d8%b1%d8%b3%db%8c-%d8%a8%d9%87-api-%d9%87%d8%a7%db%8c-dom\">\u8bbf\u95ee DOM API<\/h5>\n<p>\u4f7f\u7528\u6d4f\u89c8\u5668\u5b9e\u73b0\uff0c\u60a8\u53ef\u4ee5\u8bbf\u95ee\u6587\u6863\u5bf9\u8c61\u6a21\u578b\uff08DOM\uff09\uff0c\u5e76\u6267\u884c\u6240\u6709 DOM \u64cd\u4f5c\u3002\u4f46 Node.js \u65e0\u6cd5\u8bbf\u95ee DOM\u3002.<\/p>\n<p>Node.js \u5c06\u51e0\u4e4e\u6240\u6709\u7cfb\u7edf\u8d44\u6e90\u66b4\u9732\u7ed9\u4f60\u7684\u5e94\u7528\u7a0b\u5e8f\u3002\u8fd9\u610f\u5473\u7740\u4f60\u53ef\u4ee5\u4e0e\u64cd\u4f5c\u7cfb\u7edf\u4ea4\u4e92\u3001\u8bbf\u95ee\u6587\u4ef6\u7cfb\u7edf\u4ee5\u53ca\u8bfb\u5199\u6587\u4ef6\u3002\u4f46\u662f\uff0c\u4f60\u65e0\u6cd5\u901a\u8fc7\u6d4f\u89c8\u5668\u8bbf\u95ee\u64cd\u4f5c\u7cfb\u7edf\u548c\u6587\u4ef6\u7cfb\u7edf\u3002.<\/p>\n<h5 id=\"%d9%be%d9%86%d8%ac%d8%b1%d9%87-%d8%af%d8%b1-%d9%85%d9%82%d8%a7%d8%a8%d9%84-%d8%b4%db%8c-%d8%ac%d9%87%d8%a7%d9%86%db%8c\">\u7a97\u53e3\u5bf9\u8c61\u4e0e\u5168\u5c40\u5bf9\u8c61<\/h5>\n<p>JavaScript \u5185\u7f6e\u4e86\u4e00\u4e2a\u5168\u5c40\u5bf9\u8c61\u3002\u5728\u6d4f\u89c8\u5668\u4e2d\uff0cJavaScript \u7684\u5168\u5c40\u5bf9\u8c61\u79f0\u4e3a window \u5bf9\u8c61\u3002\u5728 Node.js \u4e2d\uff0c\u8be5\u5168\u5c40\u5bf9\u8c61\u88ab\u79f0\u4e3a global\u3002window \u5bf9\u8c61\u5305\u542b\u4e00\u4e9b\u4ec5\u5728\u6d4f\u89c8\u5668\u73af\u5883\u4e2d\u53ef\u7528\u7684\u65b9\u6cd5\u548c\u5c5e\u6027\u3002.<\/p>\n<h5 id=\"%da%a9%d9%86%d8%aa%d8%b1%d9%84-%d9%86%d8%b3%d8%ae%d9%87-%d9%87%d8%a7%db%8c-%d8%b2%d9%85%d8%a7%d9%86-%d8%a7%d8%ac%d8%b1%d8%a7\">\u8fd0\u884c\u65f6\u7248\u672c\u63a7\u5236<\/h5>\n<p>\u4f7f\u7528 Node.js\uff0c\u60a8\u53ef\u4ee5\u9009\u62e9\u8fd0\u884c\u670d\u52a1\u5668\u7aef\u5e94\u7528\u7a0b\u5e8f\u7684\u7248\u672c\u3002\u56e0\u6b64\uff0c\u60a8\u53ef\u4ee5\u5145\u5206\u5229\u7528\u73b0\u4ee3 JavaScript \u7684\u7279\u6027\uff0c\u800c\u65e0\u9700\u62c5\u5fc3\u7248\u672c\u517c\u5bb9\u6027\u95ee\u9898\u3002\u76f8\u6bd4\u4e4b\u4e0b\uff0c\u6d4f\u89c8\u5668\u8fd0\u884c\u65f6\u73af\u5883\u5219\u4e0d\u540c\u3002\u4f5c\u4e3a\u5f00\u53d1\u8005\uff0c\u60a8\u65e0\u6cd5\u63a7\u5236\u5ba2\u6237\u8bbf\u95ee\u60a8\u7684\u5e94\u7528\u7a0b\u5e8f\u65f6\u4f7f\u7528\u7684\u6d4f\u89c8\u5668\u7248\u672c\u3002.<\/p>\n<h5 id=\"%d8%a8%d8%a7%d8%b1%da%af%db%8c%d8%b1%db%8c-%d9%85%d8%a7%da%98%d9%88%d9%84-%d9%87%d8%a7-%d9%88%d8%a7%d8%b1%d8%af%d8%a7%d8%aa-%d8%af%d8%b1-%d9%85%d9%82%d8%a7%d8%a8%d9%84-%d9%86%db%8c%d8%a7%d8%b2-%d8%a8\">\u52a0\u8f7d\u6a21\u5757\uff08\u5bfc\u5165\u5173\u952e\u5b57\u4e0e\u5f15\u5165\u5173\u952e\u5b57\uff09<\/h5>\n<p>Node.js \u4e3a CommonJS \u548c ES \u6a21\u5757\u63d0\u4f9b\u4e86\u5f00\u7bb1\u5373\u7528\u7684\u652f\u6301\u3002\u60a8\u53ef\u4ee5\u4f7f\u7528 `require` \u5173\u952e\u5b57\uff08CommonJS \u8bed\u6cd5\uff09\u548c `import` \u5173\u952e\u5b57\uff08ES \u8bed\u6cd5\uff09\u52a0\u8f7d\u6a21\u5757\u3002\u4e00\u4e9b\u73b0\u4ee3\u6d4f\u89c8\u5668\u652f\u6301 ES \u6a21\u5757\uff0c\u8fd9\u610f\u5473\u7740\u60a8\u53ef\u4ee5\u4f7f\u7528 ES \u5bfc\u5165\u7684\u6a21\u5757\u3002\u4f46\u60a8\u4ecd\u7136\u9700\u8981\u521b\u5efa\u76f8\u5e94\u7684\u5305\u6765\u517c\u5bb9\u4e0d\u652f\u6301 ES \u6a21\u5757\u7684\u65e7\u7248\u6d4f\u89c8\u5668\u3002.<\/p>\n<h5 id=\"%d8%a8%d8%b1%d8%a7%db%8c-%d8%b4%d8%b1%d9%88%d8%b9-%da%a9%d8%a7%d8%b1-%d8%a8%d8%a7-node-%d8%a8%d9%87-%da%86%d9%87-%d9%85%d9%82%d8%af%d8%a7%d8%b1-%d8%ac%d8%a7%d9%88%d8%a7-%d8%a7%d8%b3%da%a9%d8%b1%db%8c\">\u8981\u5f00\u59cb\u4f7f\u7528Node.js\uff0c\u9700\u8981\u638c\u63e1\u591a\u5c11JavaScript\u77e5\u8bc6\uff1f<\/h5>\n<p>\u5982\u679c\u4f60\u662f JavaScript \u7684\u7edd\u5bf9\u65b0\u624b\uff0c\u6211\u5efa\u8bae\u4f60\u4ece\u57fa\u7840\u5f00\u59cb\u3002\u9996\u5148\uff0c\u719f\u6089 JavaScript \u7684\u57fa\u672c\u6982\u5ff5\u3002\u7136\u540e\uff0c\u4f60\u53ef\u4ee5\u7ee7\u7eed\u5b66\u4e60\u5982\u4f55\u4f7f\u7528 Node.js \u6784\u5efa\u670d\u52a1\u5668\u7aef\u5e94\u7528\u7a0b\u5e8f\u3002\u4f60\u4e0d\u53ef\u80fd\u5b8c\u5168\u638c\u63e1 JavaScript \u7684\u6240\u6709\u77e5\u8bc6\u3002\u90a3\u4e48\uff0c\u5982\u4f55\u5224\u65ad\u4f60\u638c\u63e1\u4e86\u8db3\u591f\u7684 JavaScript \u77e5\u8bc6\u53ef\u4ee5\u5f00\u59cb\u5b66\u4e60 Node.js \u4e86\u5462\uff1fNodejs.dev \u6587\u6863\u63d0\u4f9b\u4e86\u4e00\u7cfb\u5217\u5728\u6df1\u5165\u5b66\u4e60 Node.js \u4e4b\u524d\u9700\u8981\u5b66\u4e60\u7684 JavaScript \u4e3b\u9898\u3002\u4e00\u65e6\u4f60\u638c\u63e1\u4e86 JavaScript \u7684\u57fa\u7840\u77e5\u8bc6\uff0c\u5c31\u53ef\u4ee5\u5f00\u59cb\u5b66\u4e60 Node.js \u4e86\u3002.<\/p>\n<h2 id=\"%d8%a2%db%8c%d8%a7-%d8%a8%d8%a7%db%8c%d8%af-node-js-%d8%b1%d8%a7-%db%8c%d8%a7%d8%af-%d8%a8%da%af%db%8c%d8%b1%db%8c%d8%af%d8%9f\">\u4f60\u5e94\u8be5\u5b66\u4e60Node.js\u5417\uff1f<\/h2>\n<p>\u4ee5\u4e0b\u662f\u4e00\u4e9b\u4f60\u5e94\u8be5\u5b66\u4e60Node.js\u7684\u539f\u56e0\u3002<\/p>\n<h5 id=\"node-js-%d8%a8%d9%87-%d8%b4%d9%85%d8%a7-%d8%a7%d9%85%da%a9%d8%a7%d9%86-%d9%85%db%8c-%d8%af%d9%87%d8%af-%d8%ac%d8%a7%d9%88%d8%a7-%d8%a7%d8%b3%da%a9%d8%b1%db%8c%d9%be%d8%aa-%d8%b1%d8%a7-%d9%87%d9%85\">Node.js \u5141\u8bb8\u4f60\u5728\u5ba2\u6237\u7aef\u548c\u670d\u52a1\u5668\u7aef\u90fd\u7f16\u5199 JavaScript \u4ee3\u7801\u3002.<\/h5>\n<p>Node.js \u7684\u4f18\u52bf\u4e4b\u4e00\u5728\u4e8e\uff0c\u5b83\u5141\u8bb8\u4f60\u540c\u65f6\u5f00\u53d1\u5e94\u7528\u7a0b\u5e8f\u7684\u524d\u7aef\u548c\u540e\u7aef\u3002\u800c\u4e14\uff0c\u4f60\u53ea\u9700\u8981\u4e00\u79cd\u7f16\u7a0b\u8bed\u8a00\u2014\u2014JavaScript\u2014\u2014\u5c31\u80fd\u5b8c\u6210\u8fd9\u4e00\u5207\u3002.<\/p>\n<p>\u8fd9\u5bf9\u4f7f\u7528 JavaScript \u7684\u524d\u7aef\u5f00\u53d1\u4eba\u5458\u6765\u8bf4\u662f\u4e2a\u597d\u6d88\u606f\u3002\u5982\u679c\u4f60\u60f3\u5f00\u59cb\u4ece\u4e8b\u670d\u52a1\u5668\u7aef\u5f00\u53d1\uff0c\u8fd9\u6bd4\u4ece\u5934\u5f00\u59cb\u5b66\u4e60\u4e00\u95e8\u65b0\u7684\u540e\u7aef\u8bed\u8a00\u8981\u5bb9\u6613\u5f97\u591a\u3002.<\/p>\n<h5 id=\"node-%db%8c%da%a9-%d8%ac%d8%a7%d9%85%d8%b9%d9%87-%d9%be%d8%b1-%d8%ac%d9%86%d8%a8-%d9%88-%d8%ac%d9%88%d8%b4-%d8%af%d8%a7%d8%b1%d8%af\">Node.js\u62e5\u6709\u4e00\u4e2a\u6d3b\u8dc3\u7684\u793e\u533a\u3002.<\/h5>\n<p>\u6b63\u5982\u6211\u5728\u6587\u7ae0\u524d\u9762\u63d0\u5230\u7684\uff0cNode.js 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