javascript - Fire ajax call after all the previous ajax calls have completed -


lets have functions like:

function a(){     func b();     ajax call last; }  func b(){    if condition1        func c();    if condition2        func d();    if condition3        func e(); }  func c(){      ajax cal 1 }  func d(){      ajax call 2 }  func e(){      ajax call 3 }

my problem ajax call last should fired when previous ajax calls have completed .i.e ajax call 1 , 2 , 3.

if you're using jquery have access various calls based on promise. calls $.ajax return promise can used defer subsequent calls. see documentation jquery when call (docs here).

using when can execute function after $.ajax call has completed. can use same technique single such call $.ajax, or multiple calls.

i'm not sure based on question how want chain calls, here's attempt based on code (untested should on right track):

func b() {     var callc = null;     var calld = null;     var calle = null;      if (condition1)         callc = $.ajax("/call/1");      if (condition2)         calld =  $.ajax("/call/2");      if (condition3)         calle =  $.ajax("/call/3");      $.when(callc, calld, calle).then($.ajax("/call/last")); }

.then execute once 3 ajax calls have completed, regardless of success or failure. @ .done if want continue if calls return success.


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