- failDeferred = jQuery._Deferred();
-
- // Add errorDeferred methods and redefine cancel
- jQuery.extend( deferred , {
-
- fail: failDeferred.then,
- fireReject: failDeferred.fire,
- reject: failDeferred.resolve,
- isRejected: failDeferred.isResolved,
- // Get a promise for this deferred
- // If obj is provided, the promise aspect is added to the object
- promise: function( obj ) {
- obj = obj || {};
- jQuery.each( "then fail isResolved isRejected".split( " " ) , function( _ , method ) {
- obj[ method ] = deferred[ method ];
- });
- obj.promise = function() {
- return obj;
- };
- return obj;
+ failDeferred = jQuery._Deferred(),
+ promise;
+ // Add errorDeferred methods, then and promise
+ jQuery.extend( deferred, {
+ then: function( doneCallbacks, failCallbacks ) {
+ deferred.done( doneCallbacks ).fail( failCallbacks );
+ return this;
+ },
+ fail: failDeferred.done,
+ rejectWith: failDeferred.resolveWith,
+ reject: failDeferred.resolve,
+ isRejected: failDeferred.isResolved,
+ // Get a promise for this deferred
+ // If obj is provided, the promise aspect is added to the object
+ promise: function( obj , i /* internal */ ) {
+ if ( obj == null ) {
+ if ( promise ) {
+ return promise;
+ }
+ promise = obj = {};