JSFiddle - React, Tailwind, and code Playground
HTML
<div ng-app>
<div ng-controller="Ctrl">
<div ng-repeat = "data in comments">
<div ng-if="dataDisplay=='hoot'">
{{ data.post_id}}
</div>
<div ng-if="dataDisplay=='story'">
{{ data.post_id}}
</div>
<div ng-if="dataDisplay=='article'">
{{ data.post_id}}
</div>
</div>
</div>
</div>
JavaScript
function Ctrl($scope){
var data=[{"_id":"52fb84fac6b93c152d8b4569",
"post_id":"52fb84fac6b93c152d8b4567",
"user_id":"52df9ab5c6b93c8e2a8b4567",
"type":"hoot"},
{"_id":"52fb798cc6b93c74298b4568",
"post_id":"52fb798cc6b93c74298b4567",
"user_id":"52df9ab5c6b93c8e2a8b4567",
"type":"story"},
{"_id":"52fb7977c6b93c5c2c8b456b",
"post_id":"52fb7977c6b93c5c2c8b456a",
"user_id":"52df9ab5c6b93c8e2a8b4567",
"type":"article"}];
$scope.comments =data;
$scope.dataDisplay = "story"
}