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Questions tagged [jquery-deferred]

jQuery's deferred (also known as promises and futures) can be used to manage callback queues

jQuery.Deferred(), introduced in version 1.5, is a chainable utility object that can register multiple callbacks into callback queues, invoke callback queues, and relay the success or failure state of any synchronous or asynchronous function.

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jquery deferred and return false based on server response

I have the below jquery deferred logic. var $qCallA = callA(); var $qCallB = callB(); $.when($qCallA,$qCallB).then(function () { $("#spinnerDiv").removeClass('spinner show'); }); function callA() { return $.getJSON("/callA", function…
JavaUser
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jQuery, $.ajax with array of urls

I have a simple array of urls, and I want to load each one with jQuery. I was using $.get, but I cannot seem to get it to work with $.Deferred, so I switched to $.ajax - I almost have it working, but the results I am getting are .. odd. I was hoping…
Ciel
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Check Internet connectivity with jquery

I am trying to check for the internet connection by sending a GET request to the server. I am a beginner in jquery and javascript. I am not using navigator.onLine for my code as it works differently in different browsers. This is my code so far: var…
Gaurav
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not asynchronous function executed as jQuery Deferred

Lets say I want to process some tasks in the synchronous manner, so I have this function: function executePromiseQueueSync(queue){ var seed = $.Deferred(), finalPromise; finalPromise = _.reduce(queue, function(memo, promise){ …
mnowotka
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Jquery ajax done callback not responding to 201

I have an ajax post as such: $.post("/api/v1/payment_methods/create_credit_card", values) .done (response) -> console.log("GOOD JOB") .fail (response) -> console.log("Adas") The response is a 201, however, done doesn't seem to be capturing it…
JustNeph
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JQuery deferred changes "this"

I'm attempting to have a javascript object run a deferred method and when it's .done() call a function in that same object. I'm having issues because "this" becomes the deferred object instead of the object that called…
Chris
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Canceling a Deferred Promise in jQuery

How can I cancel a promise without removing the element from the DOM? fiddle I ran this code: $("#box") .delay(2000) .show("slow") .delay(2000) .promise() .then(function(){log("Done");}); After this, is there a…
ripper234
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How to fetch value from Promise object after promise has been resolved

Please note This is a contrived example. function longFunc(){ var deferred = $.Deferred(); setTimeout(function(){ console.log("long func completed"); deferred.resolve("hello"); }, 3000); …
Vikram
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Clear/Remove attached handlers to $.Deferred Objects

Very simple question, thought I could figure this one out but the answer has eluded me. Is it possible to clear/remove attached handlers to a deferred object done/fail/always queues. var dfd = $.Deferred() dfd.done(foo).fail(bar); // User…
Frzy
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Implement Deferred object without using jquery

I want to implement basic Deferred object without using jQuery. Here i will be implementing only done and fail callbacks, with resolve and reject functions. and ofCourse associating promise method with this function. i am doing the following…
codeofnode
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jQuery Deferred with an array of functions

I have an object full of functions like so: var functions = { fun1 : function(){ ... } fun2 : function(){ ... } fun3 : function(){ ... } }; The object keys are all referenced inside an array like so: var funList =…
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How do I use jQuery .when() function with a dynamic set of ajax calls?

I'm using JqGrid and for each row in the grid I'm loading, I am making an ajax call to get additional data. Once that's all complete, I need to apply some formatting. I would like to use $.when(), but I'm not sure how to call it. I was researching…
IronicMuffin
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jQuery when/then/fail with concurrent ajax requests: Which request failed?

Imagine a scenario where we want to do something after the concurrent requests for 'foo' and 'bar' have completed successfully, or report an error if one or both of them fails: $.when($.getJSON('foo'), $.getJSON('bar')) .then(function(foo, bar) { …
Javier
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raising jquery deferred.then() once all deferred objects have been resolved

i have two javascript functions, save() and saveAll(), set up as below: function save(data) { return $.post('/save', data); } function saveAll(callback) { var dataArray = []; $.each(dataArray, function() { save(this); }); …
Omer Bokhari
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$.Deferred vs new $.Deferred

What is the difference between var dfd = new $.Deferred and var dfd = $.Deferred In which cases you need to use new vs not using it?
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