JSFiddle - React, Tailwind, and code Playground
HTML
<body ng-app="myApp" ng-controller="myCtrl">
<div ng-repeat="x in records | filter: { email : '1' } ">{{x}}{{$last ? '' : ', '}}</div>
</body>
JavaScript
var myApp = angular.module("myApp", []);
myApp.controller("myCtrl", function($scope) {
$scope.records = [
{"email": "1"},
{"email": "1"},
{"email": "2"},
{"email": "3"}
]
});