![\"menu-r.4af5f7ec.gif\"](\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2025\/06\/20250613005053-684b75ed1d102.gif\")
<\/p>\n \u672c\u6587\u8fd8\u6709\u914d\u5957\u7684\u7cbe\u54c1\u8d44\u6e90，\u70b9\u51fb\u83b7\u53d6 <\/p>\n
\u7b80\u4ecb：Node.js\u662f\u4e00\u4e2a\u57fa\u4e8eChrome V8\u5f15\u64ce\u7684JavaScript\u8fd0\u884c\u73af\u5883，\u652f\u6301\u4f7f\u7528JavaScript\u7f16\u5199\u670d\u52a1\u5668\u7aef\u4ee3\u7801\u3002\u8be5\u6587\u5c06\u89e3\u6790Node.js\u7684\u5de5\u4f5c\u539f\u7406\u3001\u7279\u6027，\u5e76\u6307\u5bfc\u5982\u4f55\u6784\u5efa\u4e00\u4e2a\u57fa\u7840\u7684Node.js\u670d\u52a1\u5668\u3002\u5185\u5bb9\u6db5\u76d6\u975e\u963b\u585eI\/O\u6a21\u578b\u3001\u4e8b\u4ef6\u9a71\u52a8\u673a\u5236\u3001V8\u5f15\u64ce\u7684\u9ad8\u6027\u80fd\u4f18\u52bf，\u4ee5\u53ca\u4f7f\u7528NPM\u5305\u7ba1\u7406\u5668\u3002\u5b9e\u8df5\u90e8\u5206\u5305\u62ec\u5b89\u88c5Node.js\u3001\u521b\u5efa\u9879\u76ee\u3001\u5f15\u5165http\u6a21\u5757\u3001\u521b\u5efa\u670d\u52a1\u5668\u3001\u76d1\u542c\u7aef\u53e3\u548c\u8fd0\u884c\u670d\u52a1\u5668\u7684\u5177\u4f53\u6b65\u9aa4，\u4ee5\u53ca\u540e\u7eed\u5b66\u4e60\u66f4\u9ad8\u7ea7\u4e3b\u9898\u7684\u5efa\u8bae\u3002Node.js\u7531\u4e8e\u5176\u7075\u6d3b\u6027\u548c\u9ad8\u6027\u80fd，\u6210\u4e3a\u5f00\u53d1\u5404\u79cd\u7f51\u7edc\u5e94\u7528\u7684\u4f18\u9009\u5e73\u53f0\u3002 ![\"NodeJs:\u7eaf](\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2025\/06\/20250613005053-684b75ed298cc.png\")
<\/p>\n
Node.js\u4ee5\u5176\u72ec\u7279\u7684\u8fd0\u884c\u65f6\u73af\u5883\u548c\u67b6\u6784，\u5728\u670d\u52a1\u5668\u7aef\u7f16\u7a0b\u9886\u57df\u4e2d\u5f00\u8f9f\u4e86\u65b0\u7684\u7bc7\u7ae0\u3002\u5728\u8fd9\u4e00\u7ae0\u4e2d，\u6211\u4eec\u5c06\u5bf9Node.js\u7684\u6838\u5fc3\u6982\u5ff5\u4e0e\u539f\u7406\u8fdb\u884c\u8be6\u7ec6\u7684\u63a2\u8ba8，\u9996\u5148\u4ece\u5b83\u9769\u547d\u6027\u7684\u975e\u963b\u585eI\/O\u6a21\u578b\u8bb2\u8d77\u3002\u8fd9\u79cd\u6a21\u578b\u5141\u8bb8Node.js\u5728\u5904\u7406\u8f93\u5165\/\u8f93\u51fa\u4efb\u52a1\u65f6\u4e0d\u9700\u8981\u7b49\u5f85\u64cd\u4f5c\u5b8c\u6210，\u4ece\u800c\u4e0d\u963b\u585e\u4e3b\u7ebf\u7a0b，\u4fdd\u6301\u4e86\u5e94\u7528\u7684\u54cd\u5e94\u6027\u548c\u9ad8\u6548\u6027\u3002 <\/p>\n
\u7d27\u63a5\u7740，\u6211\u4eec\u4f1a\u6df1\u5165\u4e86\u89e3Node.js\u7684\u4e8b\u4ef6\u9a71\u52a8\u673a\u5236\u3002\u8fd9\u79cd\u673a\u5236\u4f9d\u8d56\u4e8e\u4e00\u4e2a\u4e8b\u4ef6\u5faa\u73af\u7cfb\u7edf，\u8be5\u7cfb\u7edf\u80fd\u591f\u76d1\u542c\u548c\u54cd\u5e94\u5404\u79cd\u4e8b\u4ef6，\u5982\u6587\u4ef6\u8bfb\u5199\u3001\u7f51\u7edc\u8bf7\u6c42\u7b49\u3002\u5728\u8fd9\u4e2a\u7cfb\u7edf\u4e2d，\u56de\u8c03\u51fd\u6570\u662f\u6838\u5fc3\u5143\u7d20，\u5b83\u4eec\u4f5c\u4e3a\u4e8b\u4ef6\u5904\u7406\u7a0b\u5e8f，\u5f53\u4e8b\u4ef6\u53d1\u751f\u65f6\u88ab\u8c03\u7528\u3002 <\/p>\n
\u6700\u540e，\u6211\u4eec\u5c06\u63a2\u8ba8Node.js\u80cc\u540e\u5f3a\u5927\u7684V8\u5f15\u64ce\u3002V8\u662fGoogle\u5f00\u53d1\u7684\u5f00\u6e90JavaScript\u5f15\u64ce，\u5b83\u628aJavaScript\u4ee3\u7801\u7f16\u8bd1\u6210\u673a\u5668\u7801\u6765\u6267\u884c，\u4e3aNode.js\u63d0\u4f9b\u4e86\u4f18\u79c0\u7684\u6267\u884c\u901f\u5ea6\u548c\u6548\u7387\u3002\u901a\u8fc7\u672c\u7ae0\u7684\u5b66\u4e60，\u6211\u4eec\u4e0d\u4ec5\u80fd\u7406\u89e3Node.js\u7684\u5de5\u4f5c\u539f\u7406，\u800c\u4e14\u80fd\u591f\u4e3a\u66f4\u6df1\u5165\u7684\u6280\u672f\u5b9e\u8df5\u6253\u4e0b\u575a\u5b9e\u57fa\u7840\u3002 <\/p>\n
Node.js\u4e4b\u6240\u4ee5\u80fd\u5728\u670d\u52a1\u5668\u7aef\u7f16\u7a0b\u9886\u57df\u8fc5\u901f\u5d2d\u9732\u5934\u89d2，\u5176\u975e\u963b\u585eI\/O\u6a21\u578b\u548c\u4e8b\u4ef6\u9a71\u52a8\u673a\u5236\u7684\u521b\u65b0\u8bbe\u8ba1\u662f\u5173\u952e\u56e0\u7d20\u3002\u672c\u7ae0\u5c06\u6df1\u5165\u5256\u6790\u8fd9\u4e9b\u673a\u5236\u7684\u5de5\u4f5c\u539f\u7406，\u5e76\u901a\u8fc7\u5b9e\u9645\u4ee3\u7801\u793a\u4f8b，\u52a0\u6df1\u7406\u89e3\u3002 <\/p>\n
\u975e\u963b\u585eI\/O\u6a21\u578b\u662f\u4e00\u79cd\u8f6f\u4ef6\u8bbe\u8ba1\u6a21\u5f0f，\u5141\u8bb8I\/O\u64cd\u4f5c\u5728\u4e0d\u4e2d\u65ad\u7a0b\u5e8f\u6d41\u7a0b\u7684\u60c5\u51b5\u4e0b\u6267\u884c\u3002\u5728\u4f20\u7edf\u963b\u585eI\/O\u6a21\u578b\u4e2d，\u5f53\u7a0b\u5e8f\u53d1\u8d77\u4e00\u4e2aI\/O\u8bf7\u6c42\u65f6，\u5b83\u4f1a\u505c\u6b62\u6267\u884c\u76f4\u5230I\/O\u64cd\u4f5c\u5b8c\u6210\u3002\u4e0e\u6b64\u76f8\u53cd，\u975e\u963b\u585eI\/O\u6a21\u578b\u5141\u8bb8\u7a0b\u5e8f\u7ee7\u7eed\u6267\u884c，\u540c\u65f6\u5728\u540e\u53f0\u5904\u7406I\/O\u8bf7\u6c42\u3002 <\/p>\n
Node.js\u4e2d\u7684\u975e\u963b\u585eI\/O\u6a21\u578b\u4e0e\u4f20\u7edf\u7684\u540c\u6b65\u6a21\u578b\u76f8\u6bd4，\u53ef\u4ee5\u663e\u8457\u63d0\u9ad8\u5e94\u7528\u7a0b\u5e8f\u7684\u6027\u80fd，\u7279\u522b\u662f\u5728\u5904\u7406\u5927\u91cf\u5e76\u53d1I\/O\u64cd\u4f5c\u65f6\u3002\u8fd9\u79cd\u6a21\u578b\u7279\u522b\u9002\u5408\u7f51\u7edc\u5e94\u7528\u548c\u9ad8\u5e76\u53d1\u573a\u666f\u3002 <\/p>\n
\u5728Node.js\u4e2d，\u975e\u963b\u585eI\/O\u64cd\u4f5c\u901a\u5e38\u901a\u8fc7\u56de\u8c03\u51fd\u6570\u6765\u5b9e\u73b0\u3002\u5f53\u53d1\u8d77\u4e00\u4e2a\u975e\u963b\u585eI\/O\u8bf7\u6c42\u540e，Node.js\u4f1a\u7acb\u5373\u8fd4\u56de\u4e00\u4e2a\u72b6\u6001\u7801，\u5e76\u7ee7\u7eed\u6267\u884c\u540e\u7eed\u4ee3\u7801\u3002\u4e00\u65e6I\/O\u64cd\u4f5c\u5b8c\u6210，\u7cfb\u7edf\u4f1a\u81ea\u52a8\u8c03\u7528\u4e4b\u524d\u6ce8\u518c\u7684\u56de\u8c03\u51fd\u6570\u6765\u5904\u7406\u64cd\u4f5c\u7ed3\u679c\u3002 <\/p>\n
\u975e\u963b\u585eI\/O\u6a21\u578b\u907f\u514d\u4e86CPU\u7684\u7a7a\u95f2\u7b49\u5f85，\u8ba9CPU\u53ef\u4ee5\u5904\u7406\u5176\u4ed6\u4efb\u52a1\u3002\u8fd9\u79cd\u6a21\u5f0f\u7279\u522b\u9002\u5408\u4e8eI\/O\u5bc6\u96c6\u578b\u5e94\u7528\u573a\u666f，\u5982Web\u670d\u52a1\u5668\u3001\u6570\u636e\u5e93\u63a5\u53e3\u7b49\u3002 <\/p>\n
const fs = require('fs');<\/p>\n
\/\/ \u975e\u963b\u585e\u65b9\u5f0f\u8bfb\u53d6\u6587\u4ef6
\nfs.readFile('\/path\/to\/file', 'utf-8', (err, data) => {
\n if (err) {
\n console.error(err);
\n return;
\n }
\n console.log(data);
\n});<\/p>\n
\u867d\u7136\u975e\u963b\u585eI\/O\u5e26\u6765\u4e86\u6027\u80fd\u4f18\u52bf，\u4f46\u540c\u65f6\u4e5f\u5f15\u5165\u4e86\u7f16\u7a0b\u590d\u6742\u6027\u3002\u5f00\u53d1\u8005\u9700\u8981\u6b63\u786e\u7ba1\u7406\u56de\u8c03\u51fd\u6570，\u5426\u5219\u5bb9\u6613\u9020\u6210\u56de\u8c03\u5730\u72f1（Callback Hell）\u3002 <\/p>\n
\u4e8b\u4ef6\u9a71\u52a8\u673a\u5236\u662fNode.js\u7684\u53e6\u4e00\u5927\u6838\u5fc3\u7279\u6027，\u5176\u6838\u5fc3\u662f\u4e8b\u4ef6\u5faa\u73af（Event Loop）\u673a\u5236\u3002\u4e8b\u4ef6\u5faa\u73af\u662fNode.js\u5904\u7406\u5e76\u53d1I\/O\u64cd\u4f5c\u7684\u4e00\u79cd\u673a\u5236，\u5b83\u5141\u8bb8Node.js\u5728\u5355\u7ebf\u7a0b\u4e0a\u5b9e\u73b0\u5f02\u6b65I\/O\u64cd\u4f5c\u3002 <\/p>\n
\u4e8b\u4ef6\u5faa\u73af\u7684\u57fa\u672c\u6d41\u7a0b\u5305\u62ec\u4ee5\u4e0b\u51e0\u4e2a\u9636\u6bb5： <\/p>\n
\u5728Node.js\u4e2d，\u6bcf\u4e2a\u5f02\u6b65\u64cd\u4f5c\u90fd\u4f1a\u6ce8\u518c\u4e00\u4e2a\u56de\u8c03\u51fd\u6570\u3002\u5f53\u5f02\u6b65\u64cd\u4f5c\u5b8c\u6210\u65f6，\u4e8b\u4ef6\u5faa\u73af\u4f1a\u5c06\u8fd9\u4e9b\u56de\u8c03\u51fd\u6570\u6392\u961f\u5230\u4efb\u52a1\u961f\u5217\u4e2d\u3002\u4e00\u65e6\u6267\u884c\u6808\u6e05\u7a7a，\u4e8b\u4ef6\u5faa\u73af\u5c31\u4f1a\u5f00\u59cb\u6267\u884c\u8fd9\u4e9b\u4efb\u52a1\u3002 <\/p>\n
\u4e0b\u9762\u662f\u4e00\u4e2a\u7b80\u5355\u7684Node.js\u7a0b\u5e8f，\u6f14\u793a\u4e86\u4e8b\u4ef6\u5faa\u73af\u548c\u975e\u963b\u585eI\/O\u7684\u64cd\u4f5c： <\/p>\n
const fs = require('fs');
\nconst http = require('http');<\/p>\n
\/\/ \u521b\u5efaHTTP\u670d\u52a1\u5668
\nhttp.createServer((req, res) => {
\n \/\/ \u975e\u963b\u585e\u65b9\u5f0f\u8bfb\u53d6\u6587\u4ef6
\n fs.readFile('\/path\/to\/file', 'utf-8', (err, data) => {
\n if (err) {
\n res.writeHead(500);
\n res.end('Error loading file!');
\n return;
\n }
\n \/\/ \u901a\u8fc7\u4e8b\u4ef6\u5faa\u73af，\u6700\u7ec8\u6267\u884c\u56de\u8c03\u51fd\u6570
\n res.writeHead(200);
\n res.end(data);
\n });
\n}).listen(3000);<\/p>\n
console.log('Server running at http:\/\/localhost:3000\/');<\/p>\n
Node.js\u7684\u4e8b\u4ef6\u5faa\u73af\u8fd8\u652f\u6301\u9ad8\u7ea7\u7279\u6027，\u5982\u5f02\u6b65\u94a9\u5b50（Async Hooks）\u3001\u5b9a\u65f6\u5668（Timers）\u548c process.nextTick \u3002 <\/p>\n
process.nextTick(() => {
\n console.log('nextTick callback executed');
\n});<\/p>\n
setTimeout(() => {
\n console.log('setTimeout callback executed');
\n}, 0);<\/p>\n
setImmediate(() => {
\n console.log('setImmediate callback executed');
\n});<\/p>\n
\u4e8b\u4ef6\u9a71\u52a8\u673a\u5236\u5141\u8bb8Node.js\u5728\u5904\u7406\u9ad8\u5e76\u53d1I\/O\u64cd\u4f5c\u65f6\u4fdd\u6301\u4f4e\u8d44\u6e90\u6d88\u8017，\u4f46\u4e5f\u4f1a\u589e\u52a0\u7a0b\u5e8f\u8bbe\u8ba1\u7684\u590d\u6742\u6027，\u5c24\u5176\u662f\u5728\u5904\u7406\u591a\u4e2a\u5f02\u6b65\u64cd\u4f5c\u548c\u9519\u8bef\u5904\u7406\u65f6\u3002 <\/p>\n
graph LR
\nA[\u5f00\u59cb\u4e8b\u4ef6\u5faa\u73af] –> B[\u6267\u884c\u5168\u5c40\u4ee3\u7801]
\nB –> C[\u6267\u884c\u5fae\u4efb\u52a1]
\nC –> D[\u5f00\u59cb\u65b0\u4e00\u8f6e\u7684\u4e8b\u4ef6\u5faa\u73af]
\nD –> E[\u5904\u7406I\/O\u4e8b\u4ef6]
\nE –> F[\u6267\u884c\u5b8f\u4efb\u52a1]
\nF –> G[\u4e8b\u4ef6\u5faa\u73af\u7ed3\u675f]
\nG –> H{\u4e8b\u4ef6\u5faa\u73af\u7ed3\u675f?}
\nH –>|\u662f| I[\u7b49\u5f85\u65b0\u4e8b\u4ef6]
\nH –>|\u5426| B<\/p>\n
\u975e\u963b\u585eI\/O\u548c\u4e8b\u4ef6\u9a71\u52a8\u673a\u5236\u5728\u5b9e\u9645\u5e94\u7528\u4e2d，\u5c24\u5176\u9002\u5408\u5904\u7406Web\u670d\u52a1\u7aef\u7684\u5927\u91cf\u5e76\u53d1\u8bf7\u6c42\u3002Node.js\u7684HTTP\u6a21\u5757\u5c31\u662f\u8fd9\u4e00\u673a\u5236\u7684\u5b9e\u9645\u5e94\u7528\u4e4b\u4e00\u3002 <\/p>\n
\u4e0b\u9762\u7684\u4ee3\u7801\u6bb5\u6f14\u793a\u4e86\u5982\u4f55\u521b\u5efa\u4e00\u4e2a\u7b80\u5355\u7684\u9ad8\u5e76\u53d1HTTP\u670d\u52a1\u5668： <\/p>\n
const http = require('http');<\/p>\n
const hostname = '127.0.0.1';
\nconst port = 3000;<\/p>\n
const server = http.createServer((req, res) => {
\n res.statusCode = 200;
\n res.setHeader('Content-Type', 'text\/plain');
\n res.end('Hello World\\\\n');
\n});<\/p>\n
server.listen(port, hostname, () => {
\n console.log(`Server running at http:\/\/${hostname}:${port}\/`);
\n});<\/p>\n
\u6784\u5efa\u5b9e\u65f6\u804a\u5929\u670d\u52a1\u5668\u65f6，\u4e8b\u4ef6\u9a71\u52a8\u548c\u975e\u963b\u585eI\/O\u7684\u4f18\u52bf\u4f53\u73b0\u5f97\u6dcb\u6f13\u5c3d\u81f4\u3002Node.js\u80fd\u591f\u5904\u7406\u5927\u91cf\u7684\u5b9e\u65f6\u6d88\u606f，\u800c\u4e0d\u4f1a\u9020\u6210\u6027\u80fd\u74f6\u9888\u3002 <\/p>\n
const WebSocket = require('ws');<\/p>\n
const wss = new WebSocket.Server({ port: 8080 });<\/p>\n
wss.on('connection', function connection(ws) {
\n ws.on('message', function incoming(message) {
\n wss.clients.forEach(function each(client) {
\n if (client !== ws && client.readyState === WebSocket.OPEN) {
\n client.send(message);
\n }
\n });
\n });
\n});<\/p>\n
\u6587\u4ef6\u670d\u52a1\u5668\u5e94\u7528\u4e2d，\u975e\u963b\u585eI\/O\u6a21\u578b\u53ef\u4ee5\u5904\u7406\u5927\u91cf\u7684\u6587\u4ef6\u8bfb\u5199\u8bf7\u6c42，\u800c\u4e0d\u4f1a\u963b\u585e\u4e3b\u7ebf\u7a0b\u3002 <\/p>\n
const http = require('http');
\nconst fs = require('fs');
\nconst path = require('path');<\/p>\n
const server = http.createServer((req, res) => {
\n const filePath = path.join(__dirname, req.url);
\n fs.readFile(filePath, (err, content) => {
\n if (err) {
\n res.writeHead(404);
\n res.end('Not Found');
\n } else {
\n res.writeHead(200);
\n res.end(content);
\n }
\n });
\n});<\/p>\n
server.listen(3000, () => {
\n console.log('Server listening on port 3000');
\n});<\/p>\n
\u9ad8\u7ea7\u7279\u6027，\u5982\u5f02\u6b65\u94a9\u5b50\u548c process.nextTick ，\u5728\u9700\u8981\u8fdb\u884c\u7cbe\u7ec6\u63a7\u5236\u7684\u573a\u666f\u4e2d\u5c24\u4e3a\u91cd\u8981，\u4f8b\u5982\u5728\u6d88\u606f\u961f\u5217\u5904\u7406\u3001\u8d44\u6e90\u6e05\u7406\u7b49\u65b9\u9762\u3002 <\/p>\n
process.on('exit', () => {
\n \/\/ \u5f53Node.js\u5373\u5c06\u9000\u51fa\u65f6\u6267\u884c\u6e05\u7406\u64cd\u4f5c
\n console.log('Cleaning up');
\n});<\/p>\n
\u4e3a\u4e86\u5229\u7528\u597d\u975e\u963b\u585eI\/O\u548c\u4e8b\u4ef6\u9a71\u52a8\u5e26\u6765\u7684\u6027\u80fd\u4f18\u52bf，\u5f00\u53d1\u8005\u5e94\u5f53： <\/p>\n
\u975e\u963b\u585eI\/O\u6a21\u578b\u548c\u4e8b\u4ef6\u9a71\u52a8\u673a\u5236\u662fNode.js\u7684\u6838\u5fc3\u7279\u6027，\u5b83\u4eec\u8d4b\u4e88\u4e86Node.js\u5728\u5904\u7406\u9ad8\u5e76\u53d1I\/O\u64cd\u4f5c\u65f6\u65e0\u4e0e\u4f26\u6bd4\u7684\u6027\u80fd\u4f18\u52bf\u3002\u901a\u8fc7\u6df1\u5165\u7406\u89e3\u8fd9\u4e9b\u539f\u7406\u5e76\u5e94\u7528\u5230\u5b9e\u8df5\u4e2d，\u5f00\u53d1\u8005\u53ef\u4ee5\u6784\u5efa\u51fa\u9ad8\u6548\u3001\u53ef\u6269\u5c55\u7684\u670d\u52a1\u5668\u7aef\u5e94\u7528\u3002\u7136\u800c，\u8fd9\u4e9b\u4f18\u52bf\u7684\u5b9e\u73b0\u4e5f\u4f34\u968f\u7740\u7f16\u7a0b\u590d\u6742\u6027\u7684\u589e\u52a0，\u7279\u522b\u662f\u5728\u9519\u8bef\u5904\u7406\u548c\u5f02\u6b65\u903b\u8f91\u7ba1\u7406\u65b9\u9762\u3002\u5728\u5b9e\u9645\u5f00\u53d1\u4e2d，\u6211\u4eec\u9700\u8981\u8003\u8651\u5230\u8fd9\u4e9b\u56e0\u7d20，\u4ee5\u53ca\u53ef\u80fd\u7684\u6027\u80fd\u74f6\u9888，\u6765\u8bbe\u8ba1\u51fa\u65e2\u9ad8\u6548\u53c8\u53ef\u7ef4\u62a4\u7684Node.js\u5e94\u7528\u3002 <\/p>\n
V8\u5f15\u64ce\u662fGoogle\u5f00\u53d1\u7684\u5f00\u6e90\u9ad8\u6027\u80fdJavaScript\u548cWebAssembly\u5f15\u64ce，\u5b83\u88ab\u8bbe\u8ba1\u7528\u6765\u8fd0\u884c\u5728\u4e0d\u540c\u5e73\u53f0\u4e0a，\u5982\u684c\u9762\u64cd\u4f5c\u7cfb\u7edf\u3001\u79fb\u52a8\u8bbe\u5907\u548c\u670d\u52a1\u5668\u3002V8\u5f15\u64ce\u5728Node.js\u4e2d\u7684\u5e94\u7528\u4f7f\u5f97\u5176\u6210\u4e3a\u6784\u5efa\u9ad8\u5e76\u53d1\u670d\u52a1\u5668\u7aef\u5e94\u7528\u7684\u7406\u60f3\u9009\u62e9\u3002 <\/p>\n
V8\u5f15\u64ce\u7684\u8bbe\u8ba1\u7279\u70b9\u4e4b\u4e00\u662f\u5b83\u7684\u5373\u65f6\u7f16\u8bd1（JIT）\u6280\u672f，\u8be5\u6280\u672f\u80fd\u591f\u5728\u8fd0\u884c\u65f6\u5c06JavaScript\u4ee3\u7801\u7f16\u8bd1\u6210\u672c\u5730\u673a\u5668\u4ee3\u7801，\u8fd9\u5927\u5927\u63d0\u9ad8\u4e86\u6267\u884c\u901f\u5ea6\u3002V8\u8fd8\u91c7\u7528\u9690\u85cf\u7c7b（Hidden Classes）\u548c\u5185\u8054\u7f13\u5b58（Inline Caching）\u6765\u4f18\u5316\u5bf9\u8c61\u5c5e\u6027\u7684\u8bbf\u95ee，\u51cf\u5c11\u4e86\u56e0\u4e3aJavaScript\u52a8\u6001\u7279\u6027\u5f15\u8d77\u7684\u6027\u80fd\u635f\u8017\u3002 <\/p>\n
V8\u5f15\u64ce\u4e0d\u65ad\u8fdb\u884c\u6027\u80fd\u4f18\u5316，\u5305\u62ec\u5783\u573e\u56de\u6536\u673a\u5236\u7684\u6539\u8fdb\u3001\u5168\u529f\u80fd\u7684\u4f18\u5316\u7f16\u8bd1\u5668\u4ee5\u53ca\u5bf9JavaScript\u65b0\u7279\u6027\u7684\u5feb\u901f\u652f\u6301\u3002\u8fd9\u4e9b\u4f18\u5316\u4e0d\u65ad\u6539\u5584V8\u7684\u6027\u80fd，\u4f7f\u5176\u6210\u4e3a\u73b0\u4ee3Web\u5e94\u7528\u548c\u670d\u52a1\u5668\u7aef\u5e94\u7528\u7684\u9996\u9009\u3002 <\/p>\n
\u4e3a\u4e86\u5c55\u793aV8\u5f15\u64ce\u7684\u6027\u80fd\u4f18\u52bf，\u6211\u4eec\u53ef\u4ee5\u7f16\u5199\u4e00\u4e9b\u57fa\u51c6\u6d4b\u8bd5\u811a\u672c，\u8fd9\u4e9b\u811a\u672c\u5c06\u8fd0\u884c\u7279\u5b9a\u7684\u8ba1\u7b97\u4efb\u52a1，\u5e76\u6d4b\u91cf\u6267\u884c\u65f6\u95f4\u3002\u901a\u8fc7\u6bd4\u8f83V8\u5f15\u64ce\u4e0e\u5176\u4ed6JavaScript\u5f15\u64ce\u7684\u6267\u884c\u65f6\u95f4，\u6211\u4eec\u53ef\u4ee5\u76f4\u89c2\u5730\u770b\u5230V8\u7684\u6027\u80fd\u8868\u73b0\u3002 <\/p>\n
\u4ee5\u4e0b\u662f\u4e00\u4e2a\u7b80\u5355\u7684\u57fa\u51c6\u6d4b\u8bd5\u811a\u672c，\u7528\u6765\u8ba1\u7b97\u6590\u6ce2\u90a3\u5951\u6570\u5217\u7684\u7b2c40\u4e2a\u6570\u5b57： <\/p>\n
function fibonacci(n) {
\n if (n < 2) {
\n return n;
\n }
\n return fibonacci(n – 1) + fibonacci(n – 2);
\n}<\/p>\n
const start = Date.now();
\nconst result = fibonacci(40);
\nconst end = Date.now();
\nconsole.log(`Fibonacci result: ${result}`);
\nconsole.log(`Execution time: ${end – start} ms`);<\/p>\n
\u8fd9\u4e2a\u811a\u672c\u867d\u7136\u4e0d\u662f\u8ba1\u7b97\u6590\u6ce2\u90a3\u5951\u6570\u5217\u6700\u9ad8\u6548\u7684\u65b9\u5f0f，\u4f46\u8db3\u4ee5\u7528\u6765\u89c2\u5bdfV8\u5f15\u64ce\u5728\u6267\u884c\u590d\u6742\u8ba1\u7b97\u65f6\u7684\u8868\u73b0\u3002 <\/p>\n
\u8fd0\u884c\u4e0a\u8ff0\u4ee3\u7801，\u8bb0\u5f55\u6267\u884c\u65f6\u95f4，\u5e76\u4e0e\u4f7f\u7528\u5176\u4ed6JavaScript\u5f15\u64ce（\u5982SpiderMonkey\u6216JavaScriptCore）\u7684\u7ed3\u679c\u8fdb\u884c\u5bf9\u6bd4\u3002V8\u5f15\u64ce\u7684\u6267\u884c\u65f6\u95f4\u901a\u5e38\u4f1a\u66f4\u77ed，\u8fd9\u8868\u660e\u5176\u6027\u80fd\u4f18\u52bf\u3002 <\/p>\n
\u4e86\u89e3V8\u7684\u6027\u80fd\u7279\u70b9\u540e，\u5f00\u53d1\u8005\u53ef\u4ee5\u7f16\u5199\u66f4\u52a0\u9ad8\u6548\u7684\u4ee3\u7801\u3002\u4f8b\u5982，\u907f\u514d\u8fc7\u5ea6\u4f7f\u7528\u5168\u5c40\u53d8\u91cf\u3001\u5408\u7406\u4f7f\u7528\u95ed\u5305\u548c\u4e8b\u4ef6\u76d1\u542c\u5668，\u4ee5\u53ca\u5229\u7528V8\u7684\u5185\u7f6e\u51fd\u6570\u8fdb\u884c\u6027\u80fd\u4f18\u5316\u3002 <\/p>\n
\u5728\u7f16\u5199Node.js\u5e94\u7528\u65f6，\u5f00\u53d1\u8005\u5e94\u5f53\u8b66\u60d5\u53ef\u80fd\u5bfc\u81f4\u6027\u80fd\u74f6\u9888\u7684\u4ee3\u7801\u6a21\u5f0f\u3002\u4f8b\u5982，\u5e94\u907f\u514d\u5728\u5faa\u73af\u4e2d\u8fdb\u884c\u8fc7\u591a\u7684I\/O\u64cd\u4f5c\u6216\u8005\u6570\u636e\u5e93\u67e5\u8be2\u3002V8\u7684\u975e\u963b\u585eI\/O\u6a21\u578b\u5141\u8bb8\u5f00\u53d1\u8005\u4ee5\u5f02\u6b65\u65b9\u5f0f\u5904\u7406\u8fd9\u7c7b\u64cd\u4f5c，\u4ece\u800c\u907f\u514d\u963b\u585e\u4e3b\u7ebf\u7a0b\u3002 <\/p>\n
| \u6d4b\u8bd5\u811a\u672c | V8\u5f15\u64ce\u8017\u65f6(ms) | SpiderMonkey\u8017\u65f6(ms) | JavaScriptCore\u8017\u65f6(ms) | |———-|—————-|———————-|———————–| | Fibonacci(40) | X | Y | Z | | JSON.parse(5kb) | X | Y | Z | | Array.sort(1000) | X | Y | Z | <\/p>\n
（\u6ce8：X, Y, Z\u5206\u522b\u4e3a\u4e0d\u540c\u5f15\u64ce\u7684\u8017\u65f6\u6d4b\u91cf\u7ed3\u679c） <\/p>\n
\u901a\u8fc7\u8868\u683c\u53ef\u4ee5\u6e05\u6670\u5730\u6bd4\u8f83\u4e0d\u540cJavaScript\u5f15\u64ce\u5728\u76f8\u540c\u6d4b\u8bd5\u811a\u672c\u4e0b\u7684\u6027\u80fd\u5dee\u5f02\u3002 <\/p>\n
V8\u5f15\u64ce\u7684\u9ad8\u6027\u80fd\u548c\u6301\u7eed\u4f18\u5316\u4f7f\u5176\u6210\u4e3aNode.js\u8fd0\u884c\u65f6\u7684\u7406\u60f3\u9009\u62e9\u3002\u901a\u8fc7\u4e86\u89e3\u548c\u5229\u7528V8\u7684\u7279\u6027，\u5f00\u53d1\u8005\u53ef\u4ee5\u7f16\u5199\u51fa\u6027\u80fd\u66f4\u4f18\u7684Node.js\u5e94\u7528\u7a0b\u5e8f\u3002\u901a\u8fc7\u6301\u7eed\u7684\u6027\u80fd\u6d4b\u8bd5\u548c\u5206\u6790，\u53ef\u4ee5\u66f4\u597d\u5730\u628a\u63e1\u4ee3\u7801\u4f18\u5316\u7684\u65b9\u5411，\u786e\u4fdd\u5e94\u7528\u7684\u9ad8\u6027\u80fd\u8868\u73b0\u3002 <\/p>\n
NPM（Node Package Manager）\u662fNode.js\u7684\u5305\u7ba1\u7406\u5668，\u5b83\u5e2e\u52a9\u5f00\u53d1\u8005\u66f4\u5bb9\u6613\u5730\u53d1\u73b0\u548c\u5206\u4eab\u4ee3\u7801\u7247\u6bb5，\u540c\u65f6\u7ba1\u7406\u9879\u76ee\u7684\u4f9d\u8d56\u5173\u7cfb\u3002\u901a\u8fc7NPM，\u5f00\u53d1\u8005\u53ef\u4ee5\u5c06\u4ee3\u7801\u5206\u5272\u6210\u53ef\u590d\u7528\u7684\u6a21\u5757，\u5e76\u4e14\u53ef\u4ee5\u5728\u4e00\u4e2a\u7b80\u5355\u7684JSON\u6587\u4ef6\u4e2d\u58f0\u660e\u9879\u76ee\u7684\u4f9d\u8d56\u3002 <\/p>\n
\u8981\u5728\u9879\u76ee\u4e2d\u4f7f\u7528NPM\u5305，\u9996\u5148\u9700\u8981\u5728\u547d\u4ee4\u884c\u4e2d\u6267\u884c\u4ee5\u4e0b\u547d\u4ee4\u6765\u641c\u7d22\u6240\u9700\u5305： <\/p>\n
npm search <package-name><\/p>\n
\u5728\u627e\u5230\u5bf9\u5e94\u7684\u5305\u4e4b\u540e，\u53ef\u4ee5\u901a\u8fc7\u4ee5\u4e0b\u547d\u4ee4\u5b89\u88c5\u5230\u9879\u76ee\u4e2d： <\/p>\n
npm install <package-name><\/p>\n
\u8fd9\u4f1a\u81ea\u52a8\u5c06\u5305\u6dfb\u52a0\u5230 node_modules \u6587\u4ef6\u5939，\u5e76\u5728 package.json \u6587\u4ef6\u4e2d\u66f4\u65b0\u4f9d\u8d56\u4fe1\u606f\u3002 <\/p>\n
package.json \u6587\u4ef6\u7528\u4e8e\u7ba1\u7406\u9879\u76ee\u4f9d\u8d56，\u5305\u62ec\u9879\u76ee\u7684\u540d\u79f0\u3001\u7248\u672c\u3001\u4f9d\u8d56\u4ee5\u53ca\u5176\u4ed6\u914d\u7f6e\u4fe1\u606f\u3002\u4e3a\u4e86\u6dfb\u52a0\u4f9d\u8d56，\u53ef\u4ee5\u5728\u9879\u76ee\u6839\u76ee\u5f55\u4e0b\u8fd0\u884c\u4ee5\u4e0b\u547d\u4ee4： <\/p>\n
npm init \/\/ \u521d\u59cb\u5316\u4e00\u4e2a\u65b0\u7684npm\u5305
\nnpm install <package-name> –save \/\/ \u6dfb\u52a0\u4f9d\u8d56，\u5e76\u5199\u5165dependencies
\nnpm install <package-name> –save-dev \/\/ \u6dfb\u52a0\u4f9d\u8d56，\u5e76\u5199\u5165devDependencies<\/p>\n
\u66f4\u65b0\u5305\u53ef\u4ee5\u901a\u8fc7\u4ee5\u4e0b\u547d\u4ee4\u5b9e\u73b0： <\/p>\n
npm update <package-name><\/p>\n
\u5378\u8f7d\u5305\u5219\u53ef\u4ee5\u4f7f\u7528： <\/p>\n
npm uninstall <package-name><\/p>\n
package.json \u6587\u4ef6\u4e2d\u7684 scripts \u5c5e\u6027\u5141\u8bb8\u4f60\u5b9a\u4e49\u4e00\u7cfb\u5217\u53ef\u8fd0\u884c\u7684\u811a\u672c\u547d\u4ee4，\u4ece\u800c\u5e2e\u52a9\u81ea\u52a8\u5316\u5e38\u89c1\u7684\u5f00\u53d1\u4efb\u52a1： <\/p>\n
{
\n "scripts": {
\n "start": "node index.js",
\n "test": "jest"
\n }
\n}<\/p>\n
NPM\u63d0\u4f9b\u4e86\u4e00\u5957\u751f\u547d\u5468\u671f\u94a9\u5b50（Lifecycle Hooks），\u6bd4\u5982 preinstall \u3001 postinstall \u7b49，\u53ef\u4ee5\u5728\u6b64\u5b9a\u4e49\u5728\u5b89\u88c5\u5305\u524d\u540e\u7684\u811a\u672c： <\/p>\n
{
\n "scripts": {
\n "preinstall": "echo 'Preinstall step'",
\n "install": "npm install",
\n "postinstall": "echo 'Postinstall step'"
\n }
\n}<\/p>\n
\u5728NPM\u4e2d，\u7248\u672c\u53f7\u901a\u5e38\u9075\u5faa\u8bed\u4e49\u5316\u7248\u672c\u63a7\u5236\u89c4\u5219，\u683c\u5f0f\u4e3a MAJOR.MINOR.PATCH \u3002\u7248\u672c\u53f7\u7684\u589e\u957f\u9075\u5faa\u4ee5\u4e0b\u89c4\u5219： <\/p>\n
\u5728 package.json \u4e2d\u6307\u5b9a\u4f9d\u8d56\u7684\u7248\u672c\u8303\u56f4\u53ef\u4ee5\u5e2e\u52a9\u4f60\u56fa\u5b9a\u4f9d\u8d56\u9879\u7684\u7248\u672c，\u9632\u6b62\u672a\u6765\u7248\u672c\u66f4\u65b0\u5e26\u6765\u7684\u6f5c\u5728\u95ee\u9898\u3002\u6307\u5b9a\u8303\u56f4\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u7b26\u53f7： <\/p>\n
\u4f8b\u5982： <\/p>\n
"dependencies": {
\n "lodash": "^4.17.4",
\n "Express": "~4.17.1"
\n}<\/p>\n
NPM\u8fd8\u63d0\u4f9b\u4e86\u79c1\u6709\u5305\u7ba1\u7406\u548c\u6743\u9650\u63a7\u5236\u7684\u529f\u80fd，\u5141\u8bb8\u4f01\u4e1a\u5c06\u5305\u5b58\u50a8\u5728\u79c1\u6709\u4ed3\u5e93\u4e2d，\u53ea\u5bf9\u7279\u5b9a\u7528\u6237\u5f00\u653e\u3002 <\/p>\n
{
\n "publishConfig": {
\n "registry": "https:\/\/registry.npmjs.org\/"
\n }
\n}<\/p>\n
NPM\u4f01\u4e1a\u7248（NPM Enterprise）\u662f\u4e00\u4e2a\u4e3a\u5927\u4e2d\u578b\u4f01\u4e1a\u63d0\u4f9b\u7684\u79c1\u6709\u5305\u7ba1\u7406\u7cfb\u7edf\u3002\u5b83\u63d0\u4f9b\u4e86\u6269\u5c55\u7684\u7279\u6027，\u5982\u5b89\u5168\u6027\u3001\u96c6\u6210\u548c\u8bb8\u53ef\u529f\u80fd，\u4ee5\u53ca\u4e0e\u5f00\u6e90NPM\u76f8\u540c\u7684\u7528\u6237\u4f53\u9a8c\u3002 <\/p>\n
\u8981\u642d\u5efaNPM\u79c1\u6709\u4ed3\u5e93，\u53ef\u4ee5\u4f7f\u7528\u5b98\u65b9\u7684\u4f01\u4e1a\u7248NPM\u670d\u52a1，\u6216\u8005\u5728\u81ea\u5df1\u7684\u670d\u52a1\u5668\u4e0a\u642d\u5efa\u79c1\u6709\u4ed3\u5e93\u3002\u642d\u5efa\u8fc7\u7a0b\u6d89\u53ca\u5230\u914d\u7f6eWeb\u670d\u52a1\u5668（\u5982Nginx）\u4ee5\u53ca\u5b89\u88c5NPM Enterprise\u8f6f\u4ef6\u5305\u3002\u4ee5\u4e0b\u662f\u4e00\u4e2a\u57fa\u672c\u7684\u914d\u7f6e\u793a\u4f8b： <\/p>\n
\/\/ \u5728npmrc\u6587\u4ef6\u4e2d\u914d\u7f6e
\nregistry=https:\/\/my-registry.example.com\/
\nalways-auth=true<\/p>\n
\u521d\u59cb\u5316\u9879\u76ee\u5e76\u521b\u5efa package.json ： <\/p>\n
bash mkdir my-npm-project cd my-npm-project npm init -y <\/p>\n<\/li>\n
\u5b89\u88c5\u4f9d\u8d56\u5305： <\/p>\n
bash npm install express –save npm install nodemon –save-dev <\/p>\n<\/li>\n
\u7f16\u5199\u7b80\u5355\u7684Node.js\u670d\u52a1\u5668\u811a\u672c： <\/p>\n
javascript const express = require('express'); const app = express(); app.get('\/', (req, res) => { res.send('Hello World!'); }); const PORT = process.env.PORT || 3000; app.listen(PORT, () => console.log(`Server running on port ${PORT}`)); <\/p>\n<\/li>\n
\u5728 package.json \u4e2d\u6dfb\u52a0\u811a\u672c： <\/p>\n
json { "scripts": { "start": "node index.js", "dev": "nodemon index.js" } } <\/p>\n<\/li>\n
\u8fd0\u884c\u5e94\u7528： <\/p>\n
bash npm run dev <\/p>\n<\/li>\n
\u5b8c\u6210\u9879\u76ee\u5f00\u53d1\u5e76\u505a\u597d\u76f8\u5e94\u6d4b\u8bd5\u4e4b\u540e，\u53ef\u4ee5\u6309\u7167\u4ee5\u4e0b\u6b65\u9aa4\u5c06\u9879\u76ee\u53d1\u5e03\u5230NPM： <\/p>\n
\u6ce8\u518c\u4e00\u4e2aNPM\u8d26\u53f7： <\/p>\n
bash npm adduser <\/p>\n<\/li>\n
\u767b\u5f55\u5e76\u53d1\u5e03\u9879\u76ee： <\/p>\n
bash npm publish <\/p>\n<\/li>\n
\u53d1\u5e03\u65f6，NPM\u4f1a\u81ea\u52a8\u68c0\u67e5 package.json \u6587\u4ef6，\u786e\u4fdd\u6240\u6709\u5b57\u6bb5\u586b\u5199\u6b63\u786e\u3002 <\/p>\n
\u4e00\u65e6\u5305\u53d1\u5e03\u5230NPM，\u7ef4\u62a4\u5305\u7684\u5de5\u4f5c\u4fbf\u5f00\u59cb\u4e86\u3002\u8fd9\u5305\u62ec\u4fee\u590d\u6f0f\u6d1e\u3001\u6dfb\u52a0\u65b0\u529f\u80fd\u3001\u53d1\u5e03\u65b0\u7248\u672c\u7b49\u3002\u59cb\u7ec8\u8bb0\u5f97\u9075\u5faa\u8bed\u4e49\u5316\u7248\u672c\u63a7\u5236\u7684\u89c4\u5219，\u4ee5\u4fbf\u7528\u6237\u4e86\u89e3\u66f4\u6539\u7684\u8303\u56f4\u548c\u5f71\u54cd\u3002 <\/p>\n
Node.js\u9879\u76ee\u5f00\u53d1\u7684\u7b2c\u4e00\u6b65\u901a\u5e38\u662f\u8bbe\u7f6e\u9879\u76ee\u7684\u57fa\u7840\u6846\u67b6，\u800c\u8fd9\u6b63\u662f package.json \u6587\u4ef6\u6240\u627f\u62c5\u7684\u89d2\u8272\u3002\u5b83\u662f\u4e00\u4e2a\u9879\u76ee\u914d\u7f6e\u6587\u4ef6，\u8bb0\u5f55\u4e86\u9879\u76ee\u7684\u57fa\u672c\u4fe1\u606f\u3001\u4f9d\u8d56\u4ee5\u53ca\u811a\u672c\u547d\u4ee4\u7b49，\u662f\u6bcf\u4e2aNode.js\u9879\u76ee\u4e0d\u53ef\u7f3a\u5c11\u7684\u4e00\u90e8\u5206\u3002 <\/p>\n
\u4e00\u4e2a\u6807\u51c6\u7684 package.json \u6587\u4ef6\u5305\u542b\u591a\u4e2a\u5173\u952e\u5b57\u6bb5，\u5982 name , version , description , main , scripts , dependencies , \u548c devDependencies \u7b49\u3002\u6211\u4eec\u6765\u770b\u4e00\u4e2a\u5178\u578b\u7684 package.json \u6587\u4ef6\u7684\u7ed3\u6784： <\/p>\n
{
\n "name": "my-project",
\n "version": "1.0.0",
\n "description": "A simple Node.js server example",
\n "main": "index.js",
\n "scripts": {
\n "start": "node index.js"
\n },
\n "dependencies": {
\n "express": "^4.17.1"
\n },
\n "devDependencies": {
\n "nodemon": "^2.0.4"
\n }
\n}<\/p>\n
\u521b\u5efaHTTP\u670d\u52a1\u5668\u662fNode.js\u9879\u76ee\u4e2d\u7684\u4e00\u4e2a\u5e38\u89c1\u9700\u6c42\u3002Node.js\u5185\u7f6e\u7684 http \u6a21\u5757\u63d0\u4f9b\u4e86\u4e00\u79cd\u7b80\u5355\u7684\u65b9\u5f0f\u6765\u521b\u5efa\u670d\u52a1\u5668\u3002\u4ee5\u4e0b\u662f\u4e00\u4e2a\u7b80\u5355\u7684HTTP\u670d\u52a1\u5668\u7684\u793a\u4f8b\u4ee3\u7801： <\/p>\n
const http = require('http');<\/p>\n
const hostname = '127.0.0.1';
\nconst port = 3000;<\/p>\n
const server = http.createServer((req, res) => {
\n res.statusCode = 200;
\n res.setHeader('Content-Type', 'text\/plain');
\n res.end('Hello World\\\\n');
\n});<\/p>\n
server.listen(port, hostname, () => {
\n console.log(`Server running at http:\/\/${hostname}:${port}\/`);
\n});<\/p>\n
\u5728\u8fd9\u6bb5\u4ee3\u7801\u4e2d，\u6211\u4eec\u9996\u5148\u5f15\u5165\u4e86 http \u6a21\u5757，\u5e76\u4f7f\u7528 createServer \u65b9\u6cd5\u521b\u5efa\u4e86\u4e00\u4e2a\u670d\u52a1\u5668\u5b9e\u4f8b\u3002\u670d\u52a1\u5668\u76d1\u542c hostname \u548c port \u6307\u5b9a\u7684\u5730\u5740\u548c\u7aef\u53e3，\u5f53\u6709HTTP\u8bf7\u6c42\u5230\u8fbe\u65f6，\u670d\u52a1\u5668\u5c31\u4f1a\u6267\u884c\u56de\u8c03\u51fd\u6570，\u8fd4\u56de\u4e00\u4e2a\u7b80\u5355\u7684\u54cd\u5e94\u4f53"Hello World"\u3002 <\/p>\n
\u5b8c\u6210\u4e0a\u8ff0\u4ee3\u7801\u7684\u7f16\u5199\u540e，\u6211\u4eec\u9700\u8981\u914d\u7f6e package.json \u6587\u4ef6\u6765\u542f\u52a8\u670d\u52a1\u5668\u3002\u9996\u5148，\u6211\u4eec\u5728 scripts \u5b57\u6bb5\u4e2d\u6dfb\u52a0\u4e00\u4e2a start \u811a\u672c： <\/p>\n
"scripts": {
\n "start": "node server.js"
\n}<\/p>\n
\u63a5\u7740，\u6211\u4eec\u53ef\u4ee5\u4f7f\u7528npm\u8fd0\u884c start \u811a\u672c\u6765\u542f\u52a8\u670d\u52a1\u5668： <\/p>\n
npm start<\/p>\n
\u8fd9\u6761\u547d\u4ee4\u4f1a\u6267\u884c node server.js ，\u4ece\u800c\u542f\u52a8\u6211\u4eec\u521b\u5efa\u7684HTTP\u670d\u52a1\u5668\u3002 <\/p>\n
\u5f53\u6211\u4eec\u7684\u670d\u52a1\u5668\u4ee3\u7801\u548c\u914d\u7f6e\u90fd\u51c6\u5907\u59a5\u5f53\u540e，\u6211\u4eec\u5c31\u53ef\u4ee5\u8fd0\u884c\u8fd9\u4e2a\u670d\u52a1\u5668\u4e86\u3002\u901a\u5e38\u60c5\u51b5\u4e0b，\u6211\u4eec\u4f1a\u76d1\u542c3000\u7aef\u53e3，\u8fd9\u4e5f\u662f\u5728\u4e0a\u9762\u793a\u4f8b\u4ee3\u7801\u4e2d\u6211\u4eec\u8bbe\u7f6e\u7684\u7aef\u53e3\u53f7\u3002\u5f53\u670d\u52a1\u5668\u542f\u52a8\u540e，\u6211\u4eec\u53ef\u4ee5\u901a\u8fc7\u6d4f\u89c8\u5668\u6216\u8005\u547d\u4ee4\u884c\u5de5\u5177\u8bbf\u95ee http:\/\/127.0.0.1:3000 \u6765\u67e5\u770b\u6211\u4eec\u7684"Hello World"\u6d88\u606f\u3002 <\/p>\n
\u8981\u5173\u95ed\u670d\u52a1\u5668，\u53ef\u4ee5\u901a\u8fc7\u7ec8\u7aef\u63a7\u5236\u53f0，\u4f7f\u7528 Ctrl+C \u5feb\u6377\u952e\u4e2d\u65ad\u6b63\u5728\u8fd0\u884c\u7684\u8fdb\u7a0b\u3002 <\/p>\n
\u901a\u8fc7\u672c\u7ae0\u8282\u7684\u5185\u5bb9，\u6211\u4eec\u5b66\u4e60\u4e86\u5982\u4f55\u521b\u5efa\u548c\u914d\u7f6e\u4e00\u4e2a\u57fa\u672c\u7684Node.js\u9879\u76ee，\u5305\u62ec\u7406\u89e3 package.json \u6587\u4ef6\u7684\u91cd\u8981\u5b57\u6bb5，\u4f7f\u7528 http \u6a21\u5757\u521b\u5efaHTTP\u670d\u52a1\u5668，\u4ee5\u53ca\u901a\u8fc7NPM\u811a\u672c\u542f\u52a8\u548c\u8fd0\u884c\u670d\u52a1\u5668\u3002\u8fd9\u4e9b\u77e5\u8bc6\u4e3a\u6211\u4eec\u7ee7\u7eed\u6df1\u5165Node.js\u7684\u5f00\u53d1\u6253\u4e0b\u4e86\u575a\u5b9e\u7684\u57fa\u7840\u3002\u5728\u4e0b\u4e00\u7ae0\u4e2d，\u6211\u4eec\u5c06\u63a2\u7d22Node.js\u7684\u6a21\u5757\u7cfb\u7edf\u4ee5\u53ca\u5982\u4f55\u7ec4\u7ec7\u548c\u7ba1\u7406\u9879\u76ee\u4ee3\u7801\u3002 <\/p>\n
\u672c\u6587\u8fd8\u6709\u914d\u5957\u7684\u7cbe\u54c1\u8d44\u6e90，\u70b9\u51fb\u83b7\u53d6 <\/p>\n
\u7b80\u4ecb：Node.js\u662f\u4e00\u4e2a\u57fa\u4e8eChrome V8\u5f15\u64ce\u7684JavaScript\u8fd0\u884c\u73af\u5883，\u652f\u6301\u4f7f\u7528JavaScript\u7f16\u5199\u670d\u52a1\u5668\u7aef\u4ee3\u7801\u3002\u8be5\u6587\u5c06\u89e3\u6790Node.js\u7684\u5de5\u4f5c\u539f\u7406\u3001\u7279\u6027，\u5e76\u6307\u5bfc\u5982\u4f55\u6784\u5efa\u4e00\u4e2a\u57fa\u7840\u7684Node.js\u670d\u52a1\u5668\u3002\u5185\u5bb9\u6db5\u76d6\u975e\u963b\u585eI\/O\u6a21\u578b\u3001\u4e8b\u4ef6\u9a71\u52a8\u673a\u5236\u3001V8\u5f15\u64ce\u7684\u9ad8\u6027\u80fd\u4f18\u52bf，\u4ee5\u53ca\u4f7f\u7528NPM\u5305\u7ba1\u7406\u5668\u3002\u5b9e\u8df5\u90e8\u5206\u5305\u62ec\u5b89\u88c5Node.js\u3001\u521b\u5efa\u9879\u76ee\u3001\u5f15\u5165http\u6a21\u5757\u3001\u521b\u5efa\u670d\u52a1\u5668\u3001\u76d1\u542c\u7aef\u53e3\u548c\u8fd0\u884c\u670d\u52a1\u5668\u7684\u5177\u4f53\u6b65\u9aa4，\u4ee5\u53ca\u540e\u7eed\u5b66\u4e60\u66f4\u9ad8\u7ea7\u4e3b\u9898\u7684\u5efa\u8bae\u3002Node.js\u7531\u4e8e\u5176\u7075\u6d3b\u6027\u548c\u9ad8\u6027\u80fd，\u6210\u4e3a\u5f00\u53d1\u5404\u79cd\u7f51\u7edc\u5e94\u7528\u7684\u4f18\u9009\u5e73\u53f0\u3002 <\/p>\n
\u672c\u6587\u8fd8\u6709\u914d\u5957\u7684\u7cbe\u54c1\u8d44\u6e90，\u70b9\u51fb\u83b7\u53d6 <\/p><\/p>\n","protected":false},"excerpt":{"rendered":"
\u6587\u7ae0\u6d4f\u89c8\u9605\u8bfb682\u6b21\uff0c\u70b9\u8d5e13\u6b21\uff0c\u6536\u85cf24\u6b21\u3002\u975e\u963b\u585eI\/O\u6a21\u578b\u548c\u4e8b\u4ef6\u9a71\u52a8\u673a\u5236\u662fNode.js\u7684\u6838\u5fc3\u7279\u6027\uff0c\u5b83\u4eec\u8d4b\u4e88\u4e86Node.js\u5728\u5904\u7406\u9ad8\u5e76\u53d1I\/O\u64cd\u4f5c\u65f6\u65e0\u4e0e\u4f26\u6bd4\u7684\u6027\u80fd\u4f18\u52bf\u3002\u901a\u8fc7\u6df1\u5165\u7406\u89e3\u8fd9\u4e9b\u539f\u7406\u5e76\u5e94\u7528\u5230\u5b9e\u8df5\u4e2d\uff0c\u5f00\u53d1\u8005\u53ef\u4ee5\u6784\u5efa\u51fa\u9ad8\u6548\u3001\u53ef\u6269\u5c55\u7684\u670d\u52a1\u5668\u7aef\u5e94\u7528\u3002\u7136\u800c\uff0c\u8fd9\u4e9b\u4f18\u52bf\u7684\u5b9e\u73b0\u4e5f\u4f34\u968f\u7740\u7f16\u7a0b\u590d\u6742\u6027\u7684\u589e\u52a0\uff0c\u7279\u522b\u662f\u5728\u9519\u8bef\u5904\u7406\u548c\u5f02\u6b65\u903b\u8f91\u7ba1\u7406\u65b9\u9762\u3002\u5728\u5b9e\u9645\u5f00\u53d1\u4e2d\uff0c\u6211\u4eec\u9700\u8981\u8003\u8651\u5230\u8fd9\u4e9b\u56e0\u7d20\uff0c\u4ee5\u53ca\u53ef\u80fd\u7684\u6027\u80fd\u74f6\u9888\uff0c\u6765\u8bbe\u8ba1\u51fa\u65e2\u9ad8\u6548\u53c8\u53ef\u7ef4\u62a4\u7684Node.js\u5e94\u7528\u3002_\u7eafnode<\/p>\n","protected":false},"author":2,"featured_media":43595,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"topic":[],"class_list":["post-43597","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-server"],"yoast_head":"\n