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nodejs中函數(shù)的調(diào)用實例詳解

更新時間：2018年10月31日 10:02:54 作者：這天真熱呀

本文通過實例代碼給大家介紹了nodejs函數(shù)的調(diào)用,代碼簡單易懂，非常不錯，具有一定的參考借鑒價值，需要的朋友可以參考下

一、調(diào)用本js文件中的函數(shù)

var http = require('http');
http.createServer(function (request,response){
 response.writeHead(200, {'Contet-Type':'text/html;charset=utf-8'});
 
 if(request.url!=='/favicon.ico'){
 funl(response);
 response.end('');
 } 
}).listen(8000);
console.log('Server running at http://127.0.0.1:8000/');
function funl(res){
 console.log('fun1');
 res.write('hello ,我是fun1');
}

運行結(jié)果：

二、調(diào)用外部的js文件

function fun2(res){
 console.log('我是,fun2');
 res.write('你好我是fun2');
}
// 想把此js聲明為一個函數(shù)，加下面代碼，只適用于文件中只有一個函數(shù)
module.exports = fun2;
var http = require('http');
// ortherFun 就代替了fun2
var ortherFun = require('./../otherjs/out.js');
http.createServer(function (request,response){
 response.writeHead(200, {'Contet-Type':'text/html;charset=utf-8'});
 
 if(request.url!=='/favicon.ico'){
 // funl(response);
 ortherFun(response);
 response.end('');
 } 
}).listen(8000);
console.log('Server running at http://127.0.0.1:8000/');
function funl(res){
 console.log('fun1');
 res.write('hello ,我是fun1');
}

外部js文件內(nèi)有多個函數(shù)

// 支持多個函數(shù)
module.exports={
 fun2:function(res){
 console.log('我是fun2');
 res.write('你好，我是fun2');
 },
 fun3:function(res){
 console.log('我是fun3');
 res.write('你好，我是fun3');
 }
}
var http = require('http');
var ortherFun = require('./../otherjs/out.js');
http.createServer(function (request,response){
 response.writeHead(200, {'Contet-Type':'text/html;charset=utf-8'});
 
 if(request.url!=='/favicon.ico'){
 // funl(response);
 // ortherFun(response);
 ortherFun.fun2(response);
 ortherFun.fun3(response);
 response.end('');
 } 
}).listen(8000);
console.log('Server running at http://127.0.0.1:8000/');
function funl(res){
 console.log('fun1');
 res.write('hello ,我是fun1');
}

用字符串調(diào)用對應(yīng)的函數(shù)

var http = require('http');
var ortherFun = require('./../otherjs/out.js');
http.createServer(function (request,response){
 response.writeHead(200, {'Contet-Type':'text/html;charset=utf-8'});
 
 if(request.url!=='/favicon.ico'){
 // funl(response);
 // ortherFun(response);
 //ortherFun.fun2(response);
 //ortherFun.fun3(response);
 
 // 用字符串調(diào)用對應(yīng)的函數(shù)
 //ortherFun['fun2'](response);
 //ortherFun['fun3'](response);
    // 還可以寫成下面這樣
    funname = 'fun2';
    ortherFun[funname](response);
 response.end('');
 } 
}).listen(8000);
console.log('Server running at http://127.0.0.1:8000/');
function funl(res){
 console.log('fun1');
 res.write('hello ,我是fun1');
}