You can bind with a variable in the controller:
<input type="text" ng-model="inputText" placeholder="{{somePlaceholder}}" />
In the controller:
$scope.somePlaceholder="abc";
You can bind with a variable in the controller:
<input type="text" ng-model="inputText" placeholder="{{somePlaceholder}}" />
In the controller:
$scope.somePlaceholder="abc";