AngularJS directive ng-disabled sets the disabled attribute on the element if the expression ng-disabled evaluates to true.
<div ng-app="myApp" ng-controller='MyCtrl'>
<label>Select checkbox to disable: <input type="checkbox" ng-model="disableButton"></label><br/>
<button ng-model="button1" ng-disabled="disableButton">Button</button>
</div>
<script src="//ajax.googleapis.com/ajax/libs/angularjs/1.5.3/angular.min.js"></script>
<script>
var module = angular.module('myApp', []);
module.controller('MyCtrl', function($scope) {});
</script>