js中使序列化后的字符串转换为对象

        /*
	  	 serializedParams格式为"key1=value1&key2=value2".
	  	 也支持'key.sonkey=value'
	  	 */
	  	function paramString2obj (serializedParams) {
	  	    var obj={};
	  	    function evalThem (str) {
	  	        var strAry = new Array();
	  	        strAry = str.split("=");
	  	        //使用decodeURIComponent解析uri 组件编码
	  	        for(var i = 0; i < strAry.length; i++){
	  	            strAry[i] = decodeURIComponent(strAry[i]);
	  	        }
	  	        var attributeName = strAry[0];
	  	        var attributeValue = strAry[1].trim();
	  	        //如果值中包含"="符号，需要合并值
	  	        if(strAry.length > 2){
	  	            for(var i = 2;i<strAry.length;i++){
	  	                attributeValue += "="+strAry[i].trim();
	  	            }
	  	        }
	  	        if(!attributeValue){
	  	            return ;
	  	        }
	  	        var attriNames = attributeName.split("."),
	  	            curObj = obj;
	  	        for(var i = 0; i < (attriNames.length - 1); i++){
	  	            curObj[attriNames[i]]?"":(curObj[attriNames[i]] = {});
	  	            curObj = curObj[attriNames[i]];
	  	        }
	  	        //使用赋值方式obj[attributeName] = attributeValue.trim();替换
	  	        //eval("obj."+attributeName+"=\""+attributeValue.trim()+"\";");
	  	        //解决值attributeValue中包含单引号、双引号时无法处理的问题
	  	        curObj[attriNames[i]] = attributeValue.trim();
	  	    };
	  	    var properties = serializedParams.split("&");
	  	    for (var i = 0; i < properties.length; i++) {
	  	        //处理每一个键值对
	  	        evalThem(properties[i]);
	  	    };
	  	    return obj;
	  	};