{"id":2063,"date":"2020-12-20T21:27:00","date_gmt":"2020-12-20T13:27:00","guid":{"rendered":"https:\/\/www.yumefx.com\/?p=2063"},"modified":"2021-03-01T18:24:30","modified_gmt":"2021-03-01T10:24:30","slug":"node-js%e5%85%a5%e9%97%a8%ef%bc%88%e4%b8%8a%ef%bc%89","status":"publish","type":"post","link":"https:\/\/www.yumefx.com\/?p=2063","title":{"rendered":"Node.js\u5165\u95e8\uff08\u4e0a\uff09"},"content":{"rendered":"\n

\u7b80\u4ecb<\/h1>\n

\u5bf9\u4e8e\u524d\u7aef\uff08Front-End\uff09\u6765\u8bf4\uff0c\u5f00\u53d1\u8bed\u8a00\u65b9\u9762\u6709\u4e14\u53ea\u6709HTML\u3001CSS\u3001JavaScript\u8fd9\u4e09\u79cd\uff0c\u81f3\u4e8eVUE\u4e4b\u7c7b\u7684\u6846\u67b6\u4e5f\u65e0\u975e\u662f\u57fa\u4e8e\u8fd9\u4e9b\u8bed\u8a00\u4e4b\u4e0a\u7684\u62d3\u5c55\u3002<\/p>\n

\u800c\u5bf9\u4e8e\u540e\u7aef\uff08Back-End\uff09\u6765\u8bf4\uff0c\u53ef\u7528\u7684\u5f00\u53d1\u8bed\u8a00\u5c31\u5f88\u591a\u4e86\uff0c\u4f8b\u5982\u6211\u5e38\u7528\u7684Python\u3001\u6700\u5e38\u7528\u7684PHP\u3001\u7ecf\u4e45\u4e0d\u8870\u7684Java\u3001.Net\u3001Ruby\u3001Go\u7b49\u7b49\uff0c\u5404\u6709\u81ea\u5df1\u7684\u7279\u8272\u3002<\/p>\n

\u800c\u4eca\u5929\u7684\u4e3b\u89d2\uff0c\u5c31\u662f\u540e\u7aef\u5f00\u53d1\u8bed\u8a00\u4e2d\u7684\u540e\u8d77\u4e4b\u79c0Node.js\u3002<\/p>\n

\u6709\u53e5\u8bdd\u53eb\u505a\uff0c\u51e1\u662f\u80fd\u7528JavaScript\u6765\u5b9e\u73b0\u7684\u5e94\u7528\uff0c\u6700\u7ec8\u90fd\u4f1a\u7528JavaScript\u6765\u5b9e\u73b0\u3002<\/p>\n

\u800cNode.js\u5176\u5b9e\u5c31\u662f\u4e00\u4e2a\u6784\u5efa\u4e8eChrome V8 \u5f15\u64ce\u4e4b\u4e0a\u7684JavaScript\u8fd0\u884c\u73af\u5883\uff0c\u53ef\u4ee5\u5728\u975e\u6d4f\u89c8\u5668\u7684\u73af\u5883\u4e0b\u89e3\u6790\u548c\u6267\u884cJavaScript\u4ee3\u7801\u3002<\/p>\n

\u76f8\u5bf9\u4e8e\u6d4f\u89c8\u5668\u4e2d\u7684JavaScript\u6765\u8bf4\uff0cNode.js\u62e5\u6709\u76f8\u540c\u7684EcmaScript\u8bed\u6cd5\uff0c\u4f46\u4e0d\u5b58\u5728BOM\u548cDOM\uff08\u4e0d\u80fd\u8bbf\u95ee\u6240\u8c13\u7684\u7f51\u9875\u5143\u7d20\uff09\uff0c\u4f46\u65b0\u589e\u4e86\u6d4f\u89c8\u5668\u7f3a\u4e4f\u7684\u6587\u4ef6\u8bfb\u5199\u3001\u7f51\u7edc\u670d\u52a1\u7b49\u670d\u52a1\u5668\u7ea7\u522b\u7684\u540e\u7aefAPI\u3002<\/p>\n

Node.js\u7684\u7279\u8272\u662fevent-driven\uff08\u4e8b\u4ef6\u9a71\u52a8\uff09\u3001non-blocking I\/O model\uff08\u975e\u963b\u585eIO\u6a21\u578b\uff09\u3001lightweight and efficient\uff08\u8f7b\u91cf\u9ad8\u6548\uff09\uff0c\u53ef\u4ee5\u901a\u8fc7npm\u8fd9\u4e2a\u65b9\u4fbf\u7684\u5f00\u6e90\u5305\u7ba1\u7406\u5de5\u5177\u7ba1\u7406\u7b2c\u4e09\u65b9\u5f00\u6e90\u5305\u3002<\/p>\n

 <\/h1>\n

\u5b89\u88c5<\/h1>\n

\u5b89\u88c5\u7684\u8bdd\u5f88\u7b80\u5355\uff0c\u53ef\u4ee5\u53bb\u5b98\u7f51<\/a>\u4e0b\u8f7d\u5b89\u88c5\uff0c\u76ee\u524d\u6700\u65b0\u7248\u672c\u5df2\u7ecf\u5230\u4e8615.4\uff0c\u6ce8\u610f\u7531\u4e8e14.X\u7248\u672c\u5f00\u59cb\u4e0d\u518d\u652f\u6301Windows7\u7cfb\u7edf\uff0c\u56e0\u6b64\u5982\u679c\u662fWindows7\u7cfb\u7edf\u53ef\u4ee5\u5230\u5386\u53f2\u7248\u672c<\/a>\u4e2d\u9009\u62e913.X\u7b49\u65e9\u671f\u7248\u672c\u5b89\u88c5\u3002<\/p>\n

\u5b89\u88c5\u5b8c\u6210\u540e\u76f4\u63a5\u5728\u547d\u4ee4\u884c\u4e2d\u8f93\u5165node\u8fd0\u884c\uff0c\u5982\u679c\u987a\u5229\u8fdb\u5165Node.js\u7684\u547d\u4ee4\u884c\u754c\u9762\u5c31\u8bf4\u660e\u5b89\u88c5\u6210\u529f\u3002<\/p>\n

 <\/h1>\n

\u5bfc\u5165\u6a21\u5757<\/h1>\n

\u5728Node.js\u4e2d\uff0c\u8f83\u5e38\u7528\u7684\u6838\u5fc3\u6a21\u5757\u6709fs\uff08\u6587\u4ef6\u64cd\u4f5c\uff09\u3001http\uff08http\u670d\u52a1\uff09\u3001path\uff08\u8def\u5f84\u64cd\u4f5c\uff09\u3001os\uff08\u64cd\u4f5c\u7cfb\u7edf\u4fe1\u606f\uff09\u7b49\uff0c\u53ef\u4ee5\u901a\u8fc7require()\u65b9\u5f0f\u5bfc\u5165\u4f7f\u7528\u3002<\/p>\n

\u7528\u6237\u81ea\u5b9a\u4e49\u6216\u8005\u4e0b\u8f7d\u7684\u5176\u4ed6\u6a21\u5757\uff0c\u4e5f\u53ef\u4ee5\u901a\u8fc7require()\u65b9\u5f0f\u5bfc\u5165\u4f7f\u7528\uff08\u7c7b\u4f3cPython\u7684import\uff09\uff0c\u76f8\u5bf9\u8def\u5f84\u7684\u201c.\/\u201d\u4e0d\u80fd\u7701\u7565\uff0c\u4f46\u53ef\u4ee5\u7701\u7565\u201c.js\u201d\u540e\u7f00\u540d\u3002<\/p>\n

\u53e6\u5916\u4f20\u7edf\u7684JavaScript\u53ea\u80fd\u901a\u8fc7HTML\u9875\u9762\u4e2d\u7684script\u6807\u7b7e\u6765\u5bfc\u5165\u7b2c\u4e09\u65b9\u6a21\u5757\uff0c\u800c\u5728Node.js\u4e2d\u53ef\u4ee5\u901a\u8fc7@import()<\/code>\u65b9\u5f0f\u5f15\u7528\u5176\u4ed6js\u6587\u4ef6\u4e2d\u7684\u51fd\u6570\u3002<\/p>\n

 <\/h1>\n

\u6587\u4ef6\u8bfb\u5199<\/h1>\n

\u5728Node.js\u4e2d\u5982\u679c\u60f3\u8981\u8fdb\u884c\u6587\u4ef6\u64cd\u4f5c\uff0c\u5fc5\u987b\u8981\u5f15\u5165fs\u8fd9\u4e2a\u6838\u5fc3\u6a21\u5757\uff0c\u5b83\u63d0\u4f9b\u4e86\u6587\u4ef6\u64cd\u4f5c\u76f8\u5173\u7684API\u3002<\/p>\n\n\n\n

\/\/ \u52a0\u8f7dfs\u6838\u5fc3\u6a21\u5757<\/span>\nvar fs = require('fs')<\/span>\n<\/pre>\n\n\n\n
\u00a0<\/h3>\n
\u8bfb\u53d6\u6587\u4ef6<\/h3>\n\n\n\n
fs.readFile('test.txt',function(error,data){<\/span>\n  if (data){<\/span>\n    console.log(data.toString())<\/span>\n  }<\/span>\n})<\/span>\n<\/pre>\n\n\n\n
\u8bfb\u53d6\u5230\u7684\u662f\u6587\u4ef6\u7684\u4e8c\u8fdb\u5236\u5185\u5bb9\uff0c\u56e0\u6b64\u9700\u8981toString\u8f6c\u7801\uff0c\u6216\u8005\u8bfb\u53d6\u65f6\u4f7f\u7528utf8\u7f16\u7801\u3002<\/p>\n\n\n\n
fs.readFile('test.txt', 'utf8', function(error,data){<\/span>\n  if (data){<\/span>\n    console.log(data)<\/span>\n  }<\/span>\n})<\/span>\n<\/pre>\n\n\n\n
 <\/h3>\n
\u5199\u5165\u6587\u4ef6<\/h3>\n\n\n\n
fs.writeFile('E:\/new.txt','fdsfdsfdsfgfdhdrhrefhrtntgrm tjnr',function(error){<\/span>\n  if (error){<\/span>\n    console.log('Write failed!');<\/span>\n  }<\/span>\n})<\/span>\n<\/pre>\n\n\n\n
 <\/h1>\n
\u4f20\u7edfhttp\u670d\u52a1<\/h1>\n
\u4f7f\u7528http\u6838\u5fc3\u6a21\u5757\u521b\u5efahttp\u670d\u52a1<\/h3>\n\n\n\n
var http = require('http')<\/span>\nvar server = http.createServer()<\/span>\n<\/span>\nserver.on('request',function(request,response){<\/span>\n  console.log('Receive a request:' + request.url)<\/span>\n  \/\/\u8bbe\u7f6eutf-8\u7f16\u7801\uff0c\u9632\u6b62\u4e2d\u6587\u4e71\u7801<\/span>\n  response.setHeader('Content-Type','text\/plain;charset=utf-8')<\/span>\n  response.write('hello nodejs')<\/span>\n  response.end()<\/span>\n  \/\/ \u6216\u8005\u76f4\u63a5\u5199\u6210response.end('hello nodejs')<\/span>\n})<\/span>\n<\/span>\nserver.listen(3000,function(){<\/span>\n  console.log('Server started!')<\/span>\n})<\/span>\n<\/pre>\n\n\n\n
\u6ce8\u610fresponse\u53ea\u80fd\u8fd4\u56de\u5b57\u7b26\u4e32\u683c\u5f0f\uff0c\u56e0\u6b64json\u683c\u5f0f\u6570\u636e\u9700\u8981\u4f7f\u7528JSON.stringfy()\u683c\u5f0f\u5316\u4e3a\u5b57\u7b26\u4e32\uff0c\u524d\u7aef\u6536\u5230\u540e\u4f7f\u7528JSON.parse()\u518d\u8fdb\u884c\u89e3\u6790\u3002<\/p>\n
 <\/h3>\n
\u89e3\u6790\u524d\u7aef\u63d0\u4ea4\u7684\u6570\u636e<\/h3>\n
\u4ee5\u4e0b\u4e3aget\u65b9\u5f0f\u63d0\u4ea4\u7684\u6570\u636e\u5904\u7406\u65b9\u5f0f<\/p>\n\n\n\n
var url = require('url')<\/span>\nvar urlObj = new URL('http:\/\/127.0.0.1:3000\/get?name=node')<\/span>\n\/\/ \u5982\u679c\u8def\u5f84\u4e0d\u5b8c\u6574\u7684\u8bdd\u9700\u8981\u62fc\u5408\u8def\u5f84\u5982\u4e0b<\/span>\n\/\/ var urlObj = new URL('\/get?name=node','http:\/\/127.0.0.1:3000\/')<\/span>\nconsole.log(urlObj.searchParams.get('name'))<\/span>\n<\/pre>\n\n\n\n
url\u4f1a\u88ab\u5904\u7406\u6210\u5982\u4e0b\u5f62\u5f0f\uff1a<\/p>\n\n\n\n
URL {<\/span>\n  href: 'http:\/\/127.0.0.1:3000\/get?name=node&type=web',<\/span>\n  origin: 'http:\/\/127.0.0.1:3000',<\/span>\n  protocol: 'http:',<\/span>\n  username: '',<\/span>\n  password: '',<\/span>\n  host: '127.0.0.1:3000',<\/span>\n  hostname: '127.0.0.1',<\/span>\n  port: '3000',<\/span>\n  pathname: '\/get',<\/span>\n  search: '?name=node&type=web',<\/span>\n  searchParams: URLSearchParams { 'name' => 'node', 'type' => 'web' },<\/span>\n  hash: ''<\/span>\n}<\/span>\n<\/pre>\n\n\n\n
\u8fd9\u6837\u5c31\u53ef\u4ee5\u65b9\u4fbf\u7684\u5904\u7406\u8bf7\u6c42\u548c\u6570\u636e\u4e86\u3002<\/p>\n
 <\/h3>\n
\u91cd\u5b9a\u5411<\/h3>\n
\u5728\u7f51\u7ad9\u5f00\u53d1\u4e2d\u7ecf\u5e38\u4f1a\u6709\u91cd\u5b9a\u5411\u5230\u67d0\u4e2a\u9875\u9762\u7b49\u7684\u9700\u6c42\uff0c\u6b64\u65f6\u53ef\u4ee5\u901a\u8fc7302\u4e34\u65f6\u91cd\u5b9a\u5411\u72b6\u6001\u7801\u5b9e\u73b0\uff0c\u5728\u54cd\u5e94\u5934\u4e2d\u901a\u8fc7Location\u544a\u8bc9\u5ba2\u6237\u7aef\u91cd\u5b9a\u5411\u7684\u76ee\u6807\u7f51\u5740\u3002<\/p>\n\n\n\n
response.statusCode = 302<\/span>\nresponse.setHeader('Location','\/')<\/span>\nresponse.end()<\/span>\n<\/pre>\n\n\n\n
 <\/h3>\n
\u5728Node.js\u4e2d\u4f7f\u7528\u6a21\u677f\u5f15\u64ce<\/h3>\n
\u4ee5\u5e38\u7528\u7684art-template\u6a21\u677f\u5f15\u64ce\u4e3a\u4f8b<\/p>\n\n\n\n
\/\/\u5b89\u88c5<\/span>\nnpm install art-template<\/span>\n<\/pre>\n\n\n\n
\/\/\u4f7f\u7528<\/span>\nvar template = require('art-template')<\/span>\n<\/span>\nvar res = template.render('hello {{ name }}', {<\/span>\n  name: 'Node'<\/span>\n})<\/span>\n<\/span>\nconsole.log(res)   \/\/ hello Node<\/span>\n<\/pre>\n\n\n\n
 <\/h1>\n
\u4f7f\u7528express\u5e93\u521b\u5efahttp\u670d\u52a1<\/h1>\n
express\u662f\u4e00\u4e2a\u7b80\u6d01\u7075\u6d3b\u7684Node.js Web\u5e94\u7528\u6846\u67b6\uff0c\u53ef\u4ee5\u5feb\u901f\u521b\u5efahttp\u670d\u52a1\u3002<\/p>\n\n\n\n
\/\/\u5b89\u88c5<\/span>\nnpm install express<\/span>\n<\/pre>\n\n\n\n
\u4f7f\u7528\u8d77\u6765\u4e5f\u5f88\u65b9\u4fbf<\/p>\n\n\n\n
var express = require('express')<\/span>\nvar path = require('path')<\/span>\nvar app = express()<\/span>\n<\/span>\n\/\/ \u516c\u5f00\u76ee\u5f55<\/span>\napp.use('\/public\/',express.static(path.join(__dirname, '.\/public\/'))) \/\/ http:\/\/127.0.0.1:3000\/public\/img\/test.jpg<\/span>\n\/\/ \u6216\u8005\u7b80\u5199\u4e3a <\/span>\n\/\/ app.use(express.static(path.join(__dirname, '.\/public\/'))) \/\/ http:\/\/127.0.0.1:3000\/img\/test.jpg<\/span>\n<\/span>\napp.get('\/',function(req,res){<\/span>\n  res.send('\u4f60\u597d express')<\/span>\n})<\/span>\n<\/span>\napp.post('\/login\/',function(req,res){<\/span>\n  res.send('\u6b22\u8fce\u767b\u9646')<\/span>\n})<\/span>\n<\/span>\napp.listen(3000,function(){<\/span>\n  console.log('listening 3000')<\/span>\n})<\/span>\n<\/pre>\n\n\n\n
\u53ef\u4ee5\u770b\u5230\u53ef\u4ee5\u65b9\u4fbf\u5730\u521b\u5efa\u591a\u4e2arequest url\uff0c\u5feb\u901f\u5730\u516c\u5f00\u6307\u5b9a\u76ee\u5f55\u7684\u8d44\u6e90\uff0c\u5e76\u4e14\u7701\u53bb\u4e86\u5904\u7406url\u3001\u7f16\u7801\u3001\u5904\u7406404\u7b49\u6b65\u9aa4\uff0c\u4ee3\u7801\u66f4\u52a0\u7b80\u6d01\u7075\u6d3b\u3002<\/p>\n
 <\/h3>\n
express\u4e2d\u4f7f\u7528art-template\u6a21\u677f\u5f15\u64ce<\/h3>\n\n\n\n
\/\/ \u5b89\u88c5<\/span>\nnpm install art-template express-art-template<\/span>\n<\/pre>\n\n\n\n
 <\/h3>\n
\u57fa\u7840\u4f7f\u7528<\/h3>\n\n\n\n
var express = require('express')<\/span>\nvar app = express()<\/span>\n<\/span>\n\/\/ \u5f53\u52a0\u8f7d.art\u7684\u6a21\u677f\u6587\u4ef6\u65f6\uff0c\u4f7f\u7528express-art-template\u6a21\u677f\u5f15\u64ce<\/span>\napp.engine('art',require('express-art-template'))<\/span>\n<\/span>\n\/\/ \u9ed8\u8ba4\u4f1a\u5230views\u6587\u4ef6\u5939\u4e2d\u5bfb\u627e\u6a21\u677f\u6587\u4ef6\uff0c\u4e5f\u53ef\u4ee5\u8bbe\u7f6eviews\u6587\u4ef6\u5939\u8def\u5f84<\/span>\napp.set('views','.\/templates\/')<\/span>\napp.get('\/',function(req,res){<\/span>\n  res.render('home.art')<\/span>\n})<\/span>\n<\/span>\n\/\/ \u65b9\u4fbf\u5730\u83b7\u53d6\u524d\u7aef\u63d0\u4ea4\u7684\u6570\u636e\u4ee5\u53ca\u91cd\u5b9a\u5411<\/span>\napp.get('\/input',function(req,res){<\/span>\n  console.log(req.query)<\/span>\n  res.redirect('\/')<\/span>\n})<\/span>\n<\/span>\napp.listen(3000,function(){<\/span>\n  console.log('listening 3000')<\/span>\n})<\/span>\n<\/pre>\n\n\n\n
 <\/h3>\n
\u83b7\u53d6post\u6570\u636e<\/h3>\n
\u5982\u679c\u9700\u8981\u83b7\u53d6post\u7684\u6570\u636e\u7684\u8bdd\uff0c\u9700\u8981\u53e6\u4e00\u4e2a\u7b2c\u4e09\u65b9\u5e93body-parser\u7684\u914d\u5408\u3002<\/p>\n\n\n\n
\/\/ \u5b89\u88c5<\/span>\nnpm install body-parser<\/span>\n<\/span>\n\/\/\u4f7f\u7528<\/span>\nvar express = require('express')<\/span>\nvar bodyParser = require('body-parser')<\/span>\n<\/span>\nvar app = express()<\/span>\napp.use(bodyParser.urlencoded({ extended: false}))<\/span>\n\/\/ \u5f53\u524d\u7aef\u63d0\u4ea4\u7684\u6570\u636e\u4e3ajson\u683c\u5f0f\u65f6<\/span>\napp.use(bodyParser.json())<\/span>\n<\/span>\napp.post('\/post',function(req,res){<\/span>\n  console.log(req.body)<\/span>\n})<\/span>\n<\/span>\napp.listen(3000,function(){<\/span>\n  console.log('listening 3000')<\/span>\n})<\/span>\n<\/pre>\n\n\n\n
 <\/h3>\n
\u8def\u7531\u8868\u5355\u72ec\u5b9a\u4e49<\/h3>\n
\u5728\u6709\u5f88\u591a\u8def\u7531\u65f6\uff0c\u53ef\u4ee5\u5c06\u8def\u7531\u8868\u5355\u72ec\u653e\u5230\u4e00\u4e2ajs\u6587\u4ef6\u4e2d\uff0c\u5728app.js\u5165\u53e3\u5904\u5bfc\u5165\u3002<\/p>\n\n\n\n
\/\/ router.js<\/span>\nvar express = require('express')<\/span>\nvar router = express.Router()<\/span>\n<\/span>\nrouter.get('\/',function(req,res){<\/span>\n  ...<\/span>\n})<\/span>\n<\/span>\nmodule.exports = router<\/span>\n<\/pre>\n\n\n\n
\/\/ app.js<\/span>\nvar express = require('express')<\/span>\n<\/span>\nvar app = express()<\/span>\nvar routers = require('.\/router')<\/span>\n<\/span>\napp.use(routers)<\/span>\n<\/span>\napp.listen(3000,function(){<\/span>\n  console.log('listening 3000')<\/span>\n})<\/span>\n<\/pre>\n\n\n\n
 <\/h1>\n
\u6ce8\u610f<\/h1>\n
1.Node.js\u4e2d\u6ca1\u6709\u5168\u5c40\u4f5c\u7528\u57df\uff0c\u53ea\u6709\u6a21\u5757\u4f5c\u7528\u57df\uff0c\u6bcf\u4e00\u4e2ajs\u6587\u4ef6\u90fd\u662f\u5c01\u95ed\u7684\u4f5c\u7528\u57df\u3002<\/p>\n
\u5982\u679c\u9700\u8981\u83b7\u53d6\u81ea\u5b9a\u4e49\u6a21\u5757\u4e2d\u7684\u6210\u5458\uff08\u53d8\u91cf\u548c\u51fd\u6570\u7b49\uff09\uff0c\u90a3\u4e48\u53ef\u4ee5\u5c06\u8be5\u6210\u5458\u6302\u8f7d\u5230\u9ed8\u8ba4\u7684exports\u5bf9\u8c61\u4e0a\u3002<\/p>\n\n\n\n
\/\/ b.js<\/span>\nvar foo = \"bbb\"<\/span>\nexports.foo = foo<\/span>\n<\/span>\n\/\/a.js<\/span>\nvar b = require('.\/b')<\/span>\nconsole.log(b)<\/span>\n<\/span>\n\/\/output<\/span>\n{ foo: 'bbb' }<\/span>\n<\/pre>\n\n\n\n
\u8fd9\u4e2a\u65b9\u5f0f\u4e5f\u7528\u4e8e\u5728b\u4e2d\u8c03\u7528a\u7684\u6210\u5458\uff0c\u4f46\u662f\u8c03\u7528\u5230\u7684\u4ee3\u7801\u4e2d\u5982\u679c\u6709\u5f15\u7528\u5e93\uff0c\u90a3\u4e48\u4e5f\u5f97\u5728b\u4e2d\u5f15\u5165\u3002<\/p>\n\n\n\n
\/\/ b.js<\/span>\nmodule.exports = function (apps) {<\/span>\n  apps.do()<\/span>\n}<\/span>\n<\/span>\n\/\/a.js<\/span>\nvar app = function () {...}<\/span>\nvar b = require('.\/b')<\/span>\nb(app)<\/span>\n<\/pre>\n\n\n\n
2.\u5f53\u4f7f\u7528\u65e0\u5206\u53f7\u7684\u4ee3\u7801\u98ce\u683c\u65f6\uff0c\u82e5\u4e00\u884c\u4ee3\u7801\u4ee5(\u3001[\u3001`\u5f00\u5934\uff0c\u5219\u987b\u5728\u524d\u9762\u8865\u4e0a\u5206\u53f7\uff0c\u907f\u514d\u53ef\u80fd\u7684\u89e3\u6790\u9519\u8bef\u95ee\u9898\u3002<\/p>\n\n\n\n
function say () {...}<\/span>\nsay()<\/span>\n;(function(){})()<\/span>\n<\/pre>\n\n\n\n
3.\u5728\u5f00\u53d1\u4e2d\uff0c\u9700\u8981\u9891\u7e41\u91cd\u542fnode\u670d\u52a1\u67e5\u770b\u4fee\u6539\u6548\u679c\uff0c\u53ef\u4ee5\u4f7f\u7528nodemon\u8fd9\u4e2a\u7b2c\u4e09\u65b9\u5e93\uff0c\u80fd\u68c0\u6d4b\u5230\u4ee3\u7801\u4fee\u6539\u81ea\u52a8\u91cd\u542f\u670d\u52a1\u3002<\/p>\n\n\n\n
\/\/ \u5b89\u88c5<\/span>\nnpm install nodemon<\/span>\n<\/span>\n\/\/ \u4f7f\u7528<\/span>\nnodemon app.js<\/span>\n<\/pre>\n\n\n\n\n\n
\n\n\n\n
\u5f88\u591a\u4eba\u89c9\u5f97\u4ed6\u4eec\u5728\u601d\u8003\uff0c<\/p>\n
\u5b9e\u9645\u4e0a\u53ea\u662f\u91cd\u65b0\u6574\u7406\u81ea\u5df1\u7684\u504f\u89c1\u3002<\/p>\n
\u2014\u2014\u5f17\u6717\u897f\u65af\u00b7\u57f9<\/p>\n\n\n\n
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