1. 立即执行函数 匿名函数

(function(){	console.log("123");})();

2.闭包函数

function cwm1(){		var N=0; //N是cwm1的局部变量		 function cwm2()  //cwm2是cwm1的内部函数，是闭包		 {		 	N+=1; //内部函数使用了外部函数的变量N			 	console.log(N);		 }		 return cwm2;}var result=cwm1();result();result();result();

3.使用闭包定义私有变量

function ProductCwm(){	var name;	this.setName=function(value){		name=value;	}	this.getName=function(){		return name;	}}var p= new ProductCwm();p.setName('cwm');console.log(p.name);console.log(p.getName());

4. prototype 继承属性和方法

function Rectangle(x,y){	this._length=x;	this._breadth=y;}Rectangle.prototype.getDimensions=function(){	return {		length:this._length,		breadth:this._breadth	}	}var x=new Rectangle(3,4);var y=new Rectangle(4,3);console.log(x.getDimensions());console.log(y.getDimensions());

5.模块化

var module=(function(){		var N=5;	function print(x){		console.log("this result is:"+x);	}	function add(a)	{		var x=a+N;		print(x);	}	return {		description:'this is description',		add:add	}})();console.log(module.description);console.log(module.add(10));

6.柯里化

var add = function(x){	return function(y){		return x+y;	}}var add1=add(1);console.log(add1(1));console.log(add(1)(2));

7.apply,call与bind方法

var user={    name:"CWM",    whatIsYourName:function(){        console.log(this.name);    }}user.whatIsYourName();var user1={    name:"Test Name"}user.whatIsYourName.call(user1); 
     

//var user={

// greet:'Kello',

// greetUser:function(userName)

// {

// 　　 console.log(this.greet+"--"+userName);

// }

//}

//user.greetUser("cwm");

//var greet1={

// greet:'cwm'

//}

//user.greetUser.call(greet1,'world')

//user.greetUser.apply(greet1,['wordle'])

var user={

name:'cwm',

schollname:function(scholl)

{

　　console.log(this.name+''+scholl);

}

}

var geruser=user.schollname.bind({name:'IloveYour'});

var getuser=user.schollname.bind({name:'YSSA'});

//geruser('beijingdaxue');

//getuser('nanjingdashu');

9. Memoization 记忆

      function MemoizationFunction(func){	var cache={};	return function(){		var key=arguments[0];		if(cache[key])		{			return cache[key];		}else		{			var val=func.apply(this,arguments);			cache[key]=val;			return val;		}	}}var fibonacci = MemoizationFunction(function(n){    return (n === 0 || n === 1) ? n : fibonacci(n - 1) + fibonacci(n - 2);});//console.log(fibonacci(100)); // 输出354224848179262000000//console.log(fibonacci(100)); // 输出354224848179262000000

　　

 

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