一、遍历json
change_url: function(key, value){
condition[key] = value;
var string_url = "?";
for( var s in condition ){
string_url += s +"="+ condition[s] + "&";
}
var url = string_url.substring(0,string_url.length-1);
return url;
}
二、去掉最后多余的"&"
原文：http://www.cnblogs.com/mxh1099/p/5175834.html