javascript url 操作

var test='{ colkey: "hq_str_sh", colsinfo: "601006" }'    
var obj2=eval("("+test+")");  
 
    var url="http://hq.sinajs.cn/list=sh"+obj2.colsinfo;
    //alert(url);
    $.ajax({
        url:"http://hq.sinajs.cn/list=sh601006",
        dataType:"script",
        cache:"false",
        type:"GET",
        success:function(a){
            alert(eval(obj2.colkey+obj2.colsinfo));
        }
        
        
    })