Js中自定义（创建）Map以及对应方法

function Map() {
this.container = new Object();

}

Map.prototype.put = function(key, value) {
this.container[key] = value;

}

Map.prototype.get = function(key) {
return this.container[key];

}

Map.prototype.keySet = function() {
var keyset = new Array();
var count = 0;
for ( var key in this.container) {
if (key == 'extend') {
continue;
}
keyset[count] = key;
count++;
}
return keyset;

}

Map.prototype.size = function() {
var count = 0;
for ( var key in this.container) {
if (key == 'extend') {
continue;
}
count++;
}
return count;

}

Map.prototype.remove = function(key) {
delete this.container[key];

}

Map.prototype.toString = function() {
var str = "";
for ( var i = 0, keys = this.keySet(), len = keys.length; i < len; i++) {
str = str + keys[i] + "=" + this.container[keys[i]] + ";\n";
}
return str;
}

使用：

function getDatas(map){
var array = map.keySet();
var datas = "";
for(var i in array) {

                if( i != 0){
datas += "&"+array[i]+"="+map.get(array[i])+"";
}else{
datas += ""+array[i]+"="+map.get(array[i])+"";
}
}
return datas;

}