AngularJS toggle button

Question

I am trying to create a toggle button in Angular. What I have so far is:

Answer 1

for any other weary traveller...

you could simply have used ng-if. ng-if completely excludes the element from the DOM if false, so you'd have no issues with styles when not displayed. Also there is not really a need for the button group you could just change the text of the button

Something like this:

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