Recording time using ajax

function getSSOUrl (urlvalue) 
{ 
var URLs; 
$ .ajax ({ 
type: "the GET" , 
URL: "../../GeoManage/TBL__PROJECTINFO/GetUrl?urlvalue=" + urlvalue, 
Success: function (Data) { 
URLs = Data; 
} 
}) 
return urls; 
} 

write success urls inside has a value, but following return urls; not determined value, the following modifications 
added, the async: to false , // synchronization request can be a 
function getSSOUrl (urlvalue) 
{ 
var urls; 
$ .ajax ({ 
of the type: "GET" , 
url:"../../GeoManage/TBL__PROJECTINFO/GetUrl?urlvalue=" + urlvalue, 
async: false, //同步请求
success: function (data) {
urls = data;
}
}) 
return urls;
}