Here’s a quick way to perform certain operations on key press in an input field while working with AngularJS. E.g. say you want to prevent non-digits from being accepted in an input field.
<input name='foo' id='foo' ng-model='foo' ng-keypress="isNumber($event)" />
Then in your controller, you can do something like:
$scope.isNumber = function (event) { var charCode = (event.which) ? event.which: event.keyCode; if (charCode > 31 && (charCode < 48 || charCode > 57)) { event.preventDefault(); return false; } return true; };