CODEWITHSUNDEEP
javascriptjqueryjquery-deferredpromise
DLS
DLS

Reputation: 5491

jQuery Deferred not being rejected

I have the sample code below which uses jQuery deferred. What I can't seem to understand is although the brushTeeth function returns a promise that is rejected, why is collectionResults which is another deferred always being resolved.

Some jQuery deferred reading says if the functions passed in $.when are not promises, they will be resolved right away, but brushTeeth actually returns a promise.

Clues what I am doing wrong here?

ShowerModule = ( function($) {
                    function init(){
                        var result = $.Deferred();
                        var collectionResults = $.when(brushTeeth);
                        collectionResults.done(function(){
                            console.log("done");
                        })

                        collectionResults.fail(function(){
                            console.log("reject");
                        })

                    }

                    function brushTeeth() {
                        var result = $.Deferred();
                        result.reject('["bah"]');
                        return result.promise();

                    }

                    return {
                        init : init
                    }

                }(jQuery));
            ShowerModule.init();

Upvotes: 1

Views: 133

Answers (2)

bipen
bipen

Reputation: 36551

you have created two deffered object with the samename result

so i guess $.when is taking the one above it as promise.. is which is not rejected.. try this

 function init(){
                   // var result = $.Deferred(); remove this
                    var collectionResults = $.when(brushTeeth()); //accept function and not the function's reference
                    collectionResults.done(function(){
                        console.log("done");
                    })

                    collectionResults.fail(function(){
                        console.log("reject");
                    })

                }

Upvotes: 0

DLS
DLS

Reputation: 5491

Figured it out

var collectionResults = $.when(brushTeeth);

Line above should have been 

var collectionResults = $.when(brushTeeth());

Upvotes: 1

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