How to trigger a method when Angular is done adding scope updates to the DOM?

Question

I am looking for a way to execute code when after I add changes to a $scope variable, in this case $scope.results. I need to do this in order to call some legacy code that r

Answer 1

If you're like me, you'll notice that in many instances $timeout with a wait of 0 runs well before the DOM is truly stable and completely static. When I want the DOM to be stable, I want it to be stable gosh dang it. And so the solution I've come across is to set a watcher on the element (or as in the example below the entire document), for the "DOMSubtreeModified" event. Once I've waited 500 milliseconds and there have been no DOM changes, I broadcast an event like "domRendered".

IE:

   //todo: Inject $rootScope and $window, 


   //Every call to $window.setTimeout will use this function
   var broadcast = function () {};

   if (document.addEventListener) {

       document.addEventListener("DOMSubtreeModified", function (e) {
           //If less than 500 milliseconds have passed, the previous broadcast will be cleared. 
           clearTimeout(broadcast)
           broadcast = $window.setTimeout(function () {
               //This will only fire after 500 ms have passed with no changes
               $rootScope.$broadcast('domRendered')
           }, 500)

       });

   //IE stupidity
   } else {
       document.attachEvent("DOMSubtreeModified", function (e) {

           clearTimeout(broadcast)
           broadcast = $window.setTimeout(function () {
               $rootScope.$broadcast('domRendered')
           }, 500)

       });
   }

This event can be hooked into, like all broadcasts, like so:

$rootScope.$on("domRendered", function(){
   //do something
})