自己封装的jsMap插件，虽然很小，但是基本实现了功能。
/** * Map */(function(){ function jMap(){ //私有变量 var arr = {}; //增加 this.put = function(key,value){ arr[key] = value; } //查询 this.get = function(key){ if(arr[key]){ return arr[key] }else{ return null; } } //删除 this.remove = function(key){ //delete 是javascript中关键字 作用是删除类中的一些属性 delete arr[key] } //遍历 this.eachMap = function(fn){ for(var key in arr){ fn(key,arr[key]) } } } var country = new jMap(); country.put("01","ZG"); country.put("02","HG"); country.put("03","MG"); country.put("04","TG"); //alert(country.get("01")) country.remove("01") //alert(country.get("01")) country.eachMap(function(key,value){ document.write(key+"-->"+value+"
"); })})()