I have an AngularJS page with several form inputs.
When the some of the inputs have focus, I want to change other, arbitrary, aspects of the page.
For example, w
How about make a directive? You could set a variable whenever the user leaves/enters the input, and detect that: http://jsfiddle.net/TZnj2/
Be sure to read the directive guide if you're confused as to what's happening: http://docs.angularjs.org/guide/directive
Also I use scope.$apply in that directive, here's an explanation of what that does: http://docs.angularjs.org/api/ng.$rootScope.Scope#$apply
ngFocus and ngBlur are built-in directives:
<input ng-focus="hasFocus = true" ng-blur="hasFocus = false" type="text">
<p ng-show="hasFocus">The field has focus!!</p>
Try demo on jsfiddle