In this if we double click on P(paragraph) element text then text in h4 element will display because default value of isShow variable is true which is assign to ng-show directive.
<!DOCTYPE html>
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<title>Welcome to LearnKode - A code learning platform</title>
<script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.4.2/angular.min.js"></script>
</head>
<body ng-app>
<div>
<p ng-dblclick="isShow=true">Double-click on this paragraph.</p>
<h4 ng-show="isShow">Hello <span style="color:red">Learn</span>It</h4>
</div>
</body>
</html>
