一个js简单模拟Map结构
一个js简易模拟Map结构，够用了。<!--var Map=function(){ this.mapArr={};this.arrlength=0;//假如有重复key，则不存入 this.put=function(key,value){if(!this.containsKey(key)){ this.mapArr=value; this.arrlength=this.arrlength+1;}}this.get=function(key){return this.mapArr;}//传入的参数必须为Map结构this.putAll=function(map){ if(Map.isMap(map)){ var innermap=this; map.each(function(key,value){ innermap.put(key,value); }) }else{ alert("传入的非Map结构"); }}this.remove=function(key){ delete this.mapArr; this.arrlength=this.arrlength-1;}this.size=function(){ return this.arrlength;}//判断是否包含keythis.containsKey=function(key){return (key in this.mapArr);}//判断是否包含value this.containsValue=function(value){ for(var p in this.mapArr){ if(this.mapArr==value){ return true; }}return false;}//得到所有key 返回数组this.keys=function(){ var keysArr=[]; for(var p in this.mapArr){ keysArr=p; } return keysArr;}//得到所有value 返回数组this.values=function(){var valuesArr=[]; for(var p in this.mapArr){ valuesArr=this.mapArr; } return valuesArr;}this.isEmpty=function(){ if(this.size()==0){ return false; } return true;}this.clear=function(){ this.mapArr={}; this.arrlength=0;}//循环this.each=function(callback){ for(var p in this.mapArr){ callback(p,this.mapArr); }} }//判断是否是map对象Map.isMap=function(map){return(map instanceof Map);}var map=new Map();map.put("afei",25);map.put("yaoming",31);map.put("pp",2);map.put("bill","55");map.remove("afei"); var map2=new Map();map2.put("003",333);map2.put("004",444);map.putAll(map2); map.each(function(key,value){ alert(key+" : "+value);}) //-->
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