javascript done function without ajax call

Question

I want to make a function that supports done but without returning ajax.

function checkAndReturn(){
    if(global.id){
        return global.id; // the problem might be here 
    }else{
        return $.get("http://someurl.com",null,function(){...})
    }
}

Here checkAndReturn.done(function(){...}) works if global.id is not available, but it is not working if global.id is available.

I think I should be returning any other object and box my data to that object to make my done work, maybe xhr?.

Answer 1

You should return a (resolved) jQuery Deferred object. The jqXHR object returned by jQuery's AJAX functions is derived from Deferred as well, so the "interface" of your function will be clean - your function will return a Deferred in any case.

You could do something like this (just an example, adapt it to your use case):

function checkAndReturn(){
    if (global.id){
        return $.Deferred().resolve(global.id);
    }
    else {
        return $.get("http://someurl.com", null, function(){...})
    }
}

jsFiddle Demo