JS实验代码

// JavaScript Document
var tagObj = {
 aa:"sdf"
};
/*(function( window, undefined ) {
  //var _Jask = window.Jask;
  //document.removeEventListener( "DOMContentLoaded", function(){alert("准备完毕");}, false )
 var readyList;
 var DOMContentLoaded = function() {
  if ( document.addEventListener ) {
   document.removeEventListener( "DOMContentLoaded", DOMContentLoaded, false );
   Jask.ready();
  } else if ( document.readyState === "complete" ) {
   document.detachEvent( "onreadystatechange", DOMContentLoaded );
   Jask.ready();
  }
 };
 var Jask = function(selector,context){
  return new Jask.fn.init(selector,context);
 };
 Jask.fn = Jask.prototype = {
  constructor: Jask,
  init:function(selector,context)
  {
   if ( !selector ) {
    return this;
   }
   if ( selector.nodeType ) {
    this.context = this[0] = selector;
    this.length = 1;
    return this;
   }
   
  },
  ready: function( fn ) { 
   alert("asdf");
   Jask.ready.promise(fn);
   return this;
  }
 };
 Jask.fn.init.prototype = Jask.fn;
 //window.Jask= _Jask; 

 Jask.ready.promise = function(fn)
 {
  alert("asdf");
  if ( !readyList ) {
   if(document.readyState === "complete")
   {
    setTime(Jask.ready,1); 
   } else if ( document.addEventListener ) {
    document.addEventListener( "DOMContentLoaded", DOMContentLoaded, false );
    window.addEventListener( "load", Jask.ready, false );
   } else {
    document.attachEvent( "onreadystatechange", DOMContentLoaded );
    window.attachEvent( "onload", Jask.ready );
   }
   
   
  }
 };
 Jask.Deferred = function(func)
 {
  if ( func ) {
   func.call();
  }
 };
 Jask(document).ready(function(){
  alert("ff");
  });
}());
*/

function $(target){
 if(target === "undefind") return; 
 if(typeof target === "string")
 {
  var getStr = target.replace(".","").replace("#","");
  if(target.indexOf(".")>=0)
  {
   target = document.getElementsByClassName(getStr)[0];
  }else if(target.indexOf("#")>=0){
   target = document.getElementById(getStr); 
  }
 }
 this.finds = function(li)
 {
  alert("ff");
  
 }
 return target;
}
 
function childCount(obj)
{
 if(typeof obj === "object")
 {
  if(obj.addEventListener)
  {
   return obj.childElementCount;
  }else if(obj.attachEvent)
  {
   return obj.childNodes.length;
  }
   
 }
 return;
}
function addEvent(target,type,handler)
{
 if(target === "undefind") return;
 
 if(typeof target === "string") return;
 if(target.addEventListener)
 {
  target.addEventListener(type,handler,false);
 }else if(target.attachEvent){
  target.attachEvent("on"+type,function(event){handler.call(target,event);});
 }else{
  target["on"+type] = handler
 }
}
window.onload=function()
{

 

var _this = $("#tag_name");
_this.finds("li");

};