jQuery功能扩展---HashMap

(function ($) {
    HashMap = function () {
    var index = 0;
    var content = '';
    var keyV = new Array();
    var valueV = new Array();
    //向map中添加key，value键值对
        this.put = function (key,value) {
            if(key == undefined || key.Trim == '') {
            return;
            }
            if(value == undefined || value.Trim == '') {
            return;
            }
            if(content.indexOf(key) == -1) {
            keyV[index] = key;
            valueV[index++] = value;
            content += key + ';';
            } else {
            var contents = content.split(';');
            for(var i = 0; i < contents.length - 1; i++) {
            if(key == contents[i]) {
            valueV[i] = value;
            break;
            }
            }
            }
        };
        //根据key获取value值
        this.get = function(key) {
        if(key == undefined || key.Trim == '') {
            return;
            }
        var contents = content.split(';');
        for(var i = 0; i < contents.length - 1; i++) {
        if(key == contents[i]) {
        return valueV[i];
        }
        }
        return '';
        };
        //判断是否包含制定的key值
        this.containsKey = function() {
        if(key == undefined || key.Trim == '') {
            return false;
            }
        var contents = content.split(';');
        for(var i = 0; i < contents.length - 1; i++) {
        if(key == contents[i]) {
        return true;
        }
        }
        return false;
        };
        //判断map是否为空
        this.isEmpty = function() {
        if(keyV.length == 0) {
        return true;
        } else {
        return false;
        }
        };
        //获取该map的大小
        this.size = function() {
        return keyV.length;
        };
    };
})(jQuery);
//取出串中的前后空格
String.prototype.Trim = function() {
return this.replace(/^\s+/,'').replace(/\s+$/,'');
};