What is $.Deferred() and .resolve in jquery

itemprop="text">

What exactly .deferred do what is its
work and where and when we should use .deferred with resolve. In below function I have
two .done callbacks. I want to set two different callback msg. href="http://jsfiddle.net/WLpBB/"
rel="noreferrer">fiddle

var
            deferred = $.Deferred();
deferred.done(function(value) {

            alert(value);
}).done(function(id){
alert(id)

});

console.log(deferred)

deferred.resolve("hello
            world");

class="post-text" itemprop="text">

class="normal">Answer

jQuery.Deferred is
the main tool of jQuery's implementation of the promise
pattern.

Here are a few links, worth reading
:

As for your
specific need : you should use .then() (read the docs for href="http://api.jquery.com/deferred.done/" rel="nofollow
noreferrer">.done() and href="http://api.jquery.com/deferred.then/" rel="nofollow
noreferrer">.then()).

var
            deferred = $.Deferred();

deferred.then(function(value) {

            alert(value);
 return
            42;

}).then(function(id){
 alert('The answer : ' +
            id);
});

console.log(deferred)

deferred.resolve("hello
            world");

href="http://jsfiddle.net/WLpBB/2/" rel="nofollow
noreferrer">fiddle