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<html><script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.6.9/angular.min.js"></script><body><div ng-app="myApp" ng-controller="myCtrl"><p>Use a filter when displaying the array [255, 251, 200]:</p><ul> <li ng-repeat="x in counts">{{x | myFormat}}</li></ul><p>This filter uses a service that converts numbers into hexadecimal values.</p></div><script>var app = angular.module('myApp', []);app.service('hexafy', function() { this.myFunc = function (x) { return x.toString(16); }});app.filter('myFormat',['hexafy', function(hexafy) { return function(x) { return hexafy.myFunc(x); };}]);app.controller('myCtrl', function($scope) { $scope.counts = [255, 251, 200];});</script></body></html>