JSFiddle - React, Tailwind, and code Playground

HTML

<div ng-app="myApp">
  <div ng-controller="myCtrl">
    <div class="blur-area" tabindex="-1" ng-blur="onBlur()"></div>
  </div> 
</div>

CSS

.blur-area {
  border: 1px solid black; width:100px; height: 100px
}

JavaScript

var myApp = angular.module('myApp', [])
        .controller('myCtrl', function myCtrl($scope) {
            $scope.onBlur = function() {
                console.log("Blur");
            };
        });