AngularJS : Clear $watch
$watch returns a deregistration function. Calling it would deregister the $watcher.
var listener = $scope.$watch("quartz", function () {});// ...listener(); // Would clear the watch
scope.$watch returns a function that you can call and that will unregister the watch.
Something like:
var unbindWatch = $scope.$watch("myvariable", function() { //...});setTimeout(function() { unbindWatch();}, 1000);
You can also clear the watch inside the callback if you want to clear it right after something happens. That way your $watch will stay active until used.
Like so...
var clearWatch = $scope.$watch('quartzCrystal', function( crystal ){ if( isQuartz( crystal )){ // do something special and then stop watching! clearWatch(); }else{ // maybe do something special but keep watching! } }