How do I stop $watching in AngularJS?


I can set up a $watch on an AngularJS scope to be notified when the expression I am interested in has changed. But how do I stop watching once I lose interest?


When calling $watch a function is returned that unregisters the bound expression.

E.g., to watch a variable foo only change once:

var unregister = $scope.$watch('foo', function () {
  // Do something interesting here ...

Hope that helps 🙂

Answered By – Golo Roden

This Answer collected from stackoverflow, is licensed under cc by-sa 2.5 , cc by-sa 3.0 and cc by-sa 4.0

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