Friday, December 25, 2015

Deregister an AngularJS $watch Expression

As you know $watch registers a listener callback that is executed whenever the watch expression changes.

The $watch function returns a deregister function. Calling this deregister function will deregister the $watch expression

Here is an example on registering and deregistering the $watch expression

//registering the $watch listener. It returns a deregister function
var deregister = $scope.$watch('name', function(newValue, oldValue) {
  //code here

//calling the deregister function

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