Check array value exist or not using watch function in angular js

Question

<textarea ng-model="statement" name="statement"></textarea>

when i typing some values in text area i can trigger a function in cotroller by using

var autosave = function(newVal, oldVa){
    console.log('inside the function');
}
$scope.$watch('statement', autosave);

here i want to check the value array contain some value, if the values exist i want to trigger some function in controller

$scope.testAry =[];

i am going to push some values

$scope.testAry.push({username: jenson});

This time the array contain the values so i need to trigger a function

   $scope.$watch('testAry', autosave); // not working

can anyone help me to trigger the autosave function if the array contain at least one value

Bhojendra Rauniyar · Accepted Answer · 2015-09-02 08:16:28Z

1

Pass third parameter true to watch array values:

$scope.$watch('testAry', autosave, true);

Or you may use $watchCollection.

answered Sep 2, 2015 at 8:16

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1 Comment

thank you Bhojendra Nepal, $watchCollection is working for me, $scope.$watchCollection('testAry', autosave);