javascript - How to make a jQuery Deferred object resolve/reject with the same 'resolved/rejected' state of another deferred? -

i'm writing several functions deferred objects depend on varying combinations of other deferred objects.

function takesonesecond() {     return $.deferred(function(deferred) {         // something...     }).promise(); }  function takesoneminute() {     return $.deferred(function(deferred) {         // something...     }).promise(); }  function takesthreeminutes() {     return $.deferred(function(deferred) {         // something...     }).promise(); }  function myswitchingfunction() {      return $.deferred(function(deferred) {          // here..         // chooses 1 of several other functions call.          if(/* choose 1 second */) {              // tie ourselves '1 second' function.              // call function.             takesonesecond().done(function() {                  deferred.resolve(); // if that's done, i'm done too.              }).fail(function() {                  deferred.reject(); // if failed, i've failed too.              });          } else if(/* choose 1 minute */) {              // etc..          } else if(/* choose 3 minutes */) {              // etc..          }      }).promise();  } 

i'm writing snippet of code lot, there no other way make deferred mirror or cascade same 'resolved' or 'rejected' state of deferred?

takesonesecond().done(function() {     deferred.resolve(); // if that's done, i'm done too. }).fail(function() {     deferred.reject(); // if failed, i've failed too. }); 

i think don't need construct new promise @ all. return first promise.

function mysecondfunction() {     // here..     // chooses 1 of several other functions call.     // in case, assume i've chosen 'myfirstfunction' function.      // call function , return promise     return myfirstfunction(); } 

if want emphasize "at same time" part maybe resolve different value, create new 1 chaining .then:

function mysecondfunction() {     return myfirstfunction().then(function(resultoffirst) {         // ignore ,         return differentresult;     }); // errors propagate automatically }