function HashMap(){    var hashMap = {               Set : function(key,value){
   this[key] = value},               Get : function(key){
   return this[key]},               Contains : function(key){
   return this.Get(key) == null?false:true},               Remove : function(key){
   delete this[key]}           }         return hashMap;}

调用

var hashMap_bengzhan = new HashMap();hashMap_bengzhan.Set("NM","名称");hashMap_bengzhan.Set("TM","时间");