//定义map
function Map() {this.container = {};
}
//将key-value放入map中
Map.prototype.put = function(key, value) {try {if (key != null && key != "")this.container[key] = value;} catch (e) {return e;}
};//根据key从map中取出对应的value
Map.prototype.get = function(key) {try {return this.container[key];} catch (e) {return e;}
};//判断map中是否包含指定的key
Map.prototype.containsKey = function(key) {try {for ( var p in this.container) {if (p == key)return true;}return false;} catch (e) {return e;}}//判断map中是否包含指定的value
Map.prototype.containsValue = function(value) {try {for ( var p in this.container) {if (this.container[p] === value)return true;}return false;} catch (e) {return e;}
};//删除map中指定的key
Map.prototype.remove = function(key) {try {delete this.container[key];} catch (e) {return e;}
};//清空map
Map.prototype.clear = function() {try {delete this.container;this.container = {};} catch (e) {return e;}
};//判断map是否为空
Map.prototype.isEmpty = function() {if (this.keySet().length == 0)return true;elsereturn false;
};//获取map的大小
Map.prototype.size = function() {return this.keySet().length;
}//返回map中的key值数组
Map.prototype.keySet = function() {var keys = new Array();for ( var p in this.container) {keys.push(p);}return keys;
}//返回map中的values值数组
Map.prototype.values = function() {var valuesArray = new Array();var keys = this.keySet();for (var i = 0; i < keys.length; i++) {valuesArray.push(this.container[keys[i]]);}return valuesArray;
}//返回 map 中的 entrySet 对象
Map.prototype.entrySet = function() {var array = new Array();var keys = this.keySet();for (var i = 0; i < keys.length; i++) {array.push(keys[i],this.container[keys[i]]);}return array;
}//返回 map 中的 value值的和(当值是 Nunmber 类型时有效)
Map.prototype.sumValues = function() {var values = this.values();var result = 0;for (var i = 0; i < values.length; i++) {result += Number(values[i]);}return result;
}///计算两个整数的百分比值
function toPercent(num, total){num = parseFloat(num); total = parseFloat(total); if (isNaN(num) || isNaN(total)) { return "0"; } return total <= 0 ? "0%" : (Math.round(num / total * 10000) / 100.00 + "%");
//    return (Math.round(this * 10000)/100).toFixed(2) + '%';
}