JS 闭包

/***
 * JS 闭包
 **/
//var result=[];
//function foo(){
//  var i= 0;
//  for (;i<3;i=i+1){
//      result[i]=function(){
//          alert(i)
//      }
//  }
//};
//foo();
//result[0](); // 3
//result[1](); // 3
//result[2](); // 3

//var result=[];
//function foo(){
//  var i= 0;
//  for (;i<3;i=i+1){
//      result[i]=(function(j){
//          return function(){
//              alert(j);
//          };
//      })(i);
//  }
//};
//foo();
//result[0](); // 0
//result[1](); // 1
//result[2](); // 2

var style = function(el, multiple) {
    this.resize = function(){
           //获取窗口宽度
        if (window.innerWidth)
            winWidth = window.innerWidth;
        else if ((document.body) && (document.body.clientWidth))
            winWidth = document.body.clientWidth;
        //获取窗口高度
        if (window.innerHeight)
            winHeight = window.innerHeight;
        else if ((document.body) && (document.body.clientHeight))
            winHeight = document.body.clientHeight;
        //通过深入Document内部对body进行检测，获取窗口大小
        if (document.documentElement && document.documentElement.clientHeight &&     document.documentElement.clientWidth)
        {
            winHeight = document.documentElement.clientHeight;
            winWidth = document.documentElement.clientWidth;
        }
        //结果输出至两个文本框
        el.style.width = winWidth + "px";
        el.style.height = winHeight + "px";
    }
}

    var dom = function(){
        
    };
 
    dom.Show = function(){
        alert("Show Message");
    };

    dom.prototype.Display = function(){
        alert("Property Message");
    };
 
    //dom.Display(); //error
    dom.Show();  
    var d = new dom();
    d.Display();
    //d.Show(); //error

//当浏览器窗口大小改变时
window.onresize = function(){
    var main = document.getElementById("main");
    var init = new style(main, false);
    init.resize(main, false);
}