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What is the use $watch in AngularJS?

Updated:  04/15/2019 11:04 AM
Author:  Shiju Mathews

Status:    Resolved.

$watch is an important feature present in AngularJs. It can be used to keep a watch on any value and trigger a function when that value changes.

In the below snippet, a watch is kept on the 'DowJonesIndex' object present in the scope of the controller where this watch is defined.