Question

function GetId() {
    var id;    
    $.post("/Edit/CreateId", function (data) {
        id = data;
    });    
    return id;
}

But it returns before the id comes back from the server; so id is undefined.

Is there any workaround this?

Answer 1

You can always pass in a callback or use an anonymous function. It could work, but will probably be a little inconvenient. I don’t know how your other functions work together though.

function GetId(callback) { 
    $.post("/Edit/CreateId", function (data) {
        var id = data;
        callback(id)
    });    
}

Example usage with anonymous function:

GetId(function(id){
    //Do what you need to do.
});