需要什麼（'express'）（）返回？

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我是Node.js的新手，如果這太明顯，我很抱歉！需要什麼（'express'）（）返回？

我明白'require'的基本功能是它讀取一個javascript文件，執行該文件，然後繼續返回exports對象。現在

var app = require('express')();

，我可以做的東西一樣app.set('view engine', 'html');，app.get()等？

那麼，app究竟是什麼，它是如何適合Web應用程序的大圖？

來源

2015-01-04 user2441151

您需要Express模塊。它基本上是一個Express方法的對象。這些功能可通過app.<function name>訪問，如app.set。您可以使用console.log(app.set)將set函數看作字符串。

該代碼輸出快遞對象：

var express = require('express') 
var app = express() 

console.log(app)

輸出：

{ [Function] 
    init: [Function], 
    defaultConfiguration: [Function], 
    lazyrouter: [Function], 
    handle: [Function], 
    use: [Function: use], 
    route: [Function], 
    engine: [Function], 
    param: [Function], 
    set: [Function], 
    path: [Function], 
    enabled: [Function], 
    disabled: [Function], 
    enable: [Function], 
    disable: [Function], 
    get: [Function], 
    post: [Function], 
    put: [Function], 
    head: [Function], 
    delete: [Function], 
    options: [Function], 
    trace: [Function], 
    copy: [Function], 
    lock: [Function], 
    mkcol: [Function], 
    move: [Function], 
    purge: [Function], 
    propfind: [Function], 
    proppatch: [Function], 
    unlock: [Function], 
    report: [Function], 
    mkactivity: [Function], 
    checkout: [Function], 
    merge: [Function], 
    'm-search': [Function], 
    notify: [Function], 
    subscribe: [Function], 
    unsubscribe: [Function], 
    patch: [Function], 
    search: [Function], 
    connect: [Function], 
    all: [Function], 
    del: [Function], 
    render: [Function], 
    listen: [Function], 
    setMaxListeners: [Function: setMaxListeners], 
    emit: [Function: emit], 
    addListener: [Function: addListener], 
    on: [Function: addListener], 
    once: [Function: once], 
    removeListener: [Function: removeListener], 
    removeAllListeners: [Function: removeAllListeners], 
    listeners: [Function: listeners], 
    request: { app: [Circular] }, 
    response: { app: [Circular] }, 
    cache: {}, 
    settings: 
    { 'x-powered-by': true, 
    etag: 'weak', 
    'etag fn': [Function: wetag], 
    env: 'development', 
    'query parser': 'extended', 
    'query parser fn': [Function], 
    'subdomain offset': 2, 
    'trust proxy': false, 
    'trust proxy fn': [Function: trustNone], 
    view: [Function: View], 
    views: '<<<<<obfuscated>>>>>>>', 
    'jsonp callback name': 'callback' }, 
    engines: {}, 
    _events: { mount: [Function] }, 
    locals: 
    { settings: 
     { 'x-powered-by': true, 
     etag: 'weak', 
     'etag fn': [Function: wetag], 
     env: 'development', 
     'query parser': 'extended', 
     'query parser fn': [Function], 
     'subdomain offset': 2, 
     'trust proxy': false, 
     'trust proxy fn': [Function: trustNone], 
     view: [Function: View], 
     views: '<<<<<obfuscated>>>>>>>', 
     'jsonp callback name': 'callback' } }, 
    mountpath: '/' }

來源

2015-01-04 10:35:33 Sampsa

應用程序是模塊提供的所有功能的對象。
如果您想了解更多信息，請

console.log(app);

來源

2015-01-04 10:29:14 Weexe

需要什麼（'express'）（）返回？

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