How to change button label in angularjs according to requirement?

Question

I want to change the label of same button in angularjs according to requirement, same button can be for update and submit.

See the following demo,

Above demo is

Answer 1

Change your markup for button to show some scope property:

{{btnText}} 

And add some logic to your controller, that will specify text for button:

if (newItem){
  $scope.btnText = 'Submit';
}else{
  $scope.btnText = 'Update';
}