CODEWITHSUNDEEP
javascriptjquerypromisejquery-deferred
yunus kula
yunus kula

Reputation: 909

Jquery Defered.resolve don't pass parameter

I have promise as following code. After I have resolved promise with parameter, I want to get parameter in done() method.

function splitAndSetTebiskopUrl(tebiskopUrl){
    splits = tebiskopUrl.split("\u0007");
    tebiskopUrl = splits[0];
    var defer = $.Deferred();
    if(splits[1]){
        var cookieValue = splits[1];

        return $.ajax({
            type:'POST', 
            url:'xxxxxxxxxxxx', 
            data:{'cookieValue':cookieValue},

        }).then(function(data){
            if(data && data.cookieValue){
                defer.resolve(tebiskopUrl);

            }else{
                defer.reject("cookie value doesn't exist");
            }
        },
          function(){
            defer.reject("tebiskopCookieSet request error");
        });

    }else{
        defer.resolve(tebiskopUrl);
    }

    return defer.promise(); 
}

The parameter is not passed to done() method. Unfortunetly I get it as undefined. I have looked a lot of example. But I can't find the problem.

splitAndSetTebiskopUrl(url).done(function(parameter){
                //parameter is undefined
             });

Upvotes: 0

Views: 40

Answers (1)

Bergi
Bergi

Reputation: 664307

In the if block, you are returning the promise from the chained then call - the promise of the defer that you resolve will not be returned here. You could just omit that return keyword and the code would work, but really you should avoid the deferred antipattern and indeed simply return the promise from the chain:

function splitAndSetTebiskopUrl(tebiskopUrl){
    var splits = tebiskopUrl.split("\u0007");
    tebiskopUrl = splits[0];
    if (splits[1]) {
        return $.ajax({
            type:'POST', 
            url:'xxxxxxxxxxxx', 
            data:{'cookieValue': split[1]},
        }).then(function(data){
            if (data && data.cookieValue) {
                return tebiskopUrl;
            } else {
                throw new Error("cookie value doesn't exist");
            }
        }, function(err) {
            throw new Error("tebiskopCookieSet request error");
        });
    } else {
        return $.when(tebiskopUrl);
    }
}

Upvotes: 1

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