二、获取url中查询字符串对象的方法

function getUrlAttribute(url) {
	var url=url.replace('?','').trim()
	if(url.length>0){
		var args = new Object( );
        var pairs = url.split("&"); 
        for(var i = 0; i < pairs.length; i++) 
        {
            var pos = pairs[i].indexOf("="); 
            if (pos == -1) 
                continue; 
            var argname = pairs[i].substring(0,pos); 
            var value = pairs[i].substring(pos+1); 
            value = decodeURIComponent(value); 
            args[argname] = value; 
        }
        //根据键名获取值
        return args; 
	} 
}

var searchStr = window.location.search;
var urlObj = new getUrlAttribute(searchStr);
/* 如果拼接字符串是?code=2&page=3 ,则：*/
var code = urlObj.code;
var page = urlObj.page;