[Tips]:JavaScript命名空间

   1: Namespace = new Object();

   2:  

   3: // 全局对象仅存在register函数，参数为名称空间全路径LB.MAP

   4: Namespace.register = function(fullNameSpace) {

   5:    // 将命名空间按点分成几个部分，如LB.MAP

   6:    var nsArray = fullNameSpace.split('.');

   7:    var sEval = "";

   8:    var sNS = "";

   9:    for (var i = 0; i < nsArray.length; i++) {

  10:        if (i != 0) sNS += ".";

  11:        sNS += nsArray[i];

  12:        // 依次创建构造命名空间对象（假如不存在的话）                  

  13:        sEval += "if (typeof(" + sNS + ") == 'undefined') " + sNS + " = new Object();"

  14:    }

  15:    if (sEval != "") eval(sEval);

  16: }

  17:  

  18: // 注册命名空间LB.MAP, LB.UI

  19: Namespace.register("LB.MAP");

  20: Namespace.register("LB.UI");

  21:  

  22: //声明类GoogleMap

  23: LB.MAP.GoogleMap = function(zoom, center) {

  24:    this.zoom = zoom;

  25:    this.center = center;

  26: }

  27:  

  28: // GoogleMap类添加一个公共方法show()

  29: LB.MAP.GoogleMap.prototype.Display = function() {

  30:    alert("google map zoom is"+ this.zoom+" and center is "+this.center);

  31: }

  32:  

  33: var map = new LB.MAP.GoogleMap("4X", 20.00);

  34:  

  35: // 给对象上添加方法

  36: map.MoveLeft = function() { alert("I move left"); };

  37:  

  38: map.Display();

  39: map.MoveLeft();

本文转自敏捷的水博客园博客，原文链接http://www.cnblogs.com/cnblogsfans/archive/2009/06/17/1505227.html如需转载请自行联系原作者

王德水