Ng-Open-1

Checkbox value is bind to open variable with ng-model directive and this value is assigns to ng-open directive which show the particular text based on their value.

<!DOCTYPE html>
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
    <title></title>
    <script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.4.2/angular.min.js"></script>
</head>
<body ng-app>
    <div>
        <label>Check me : <input type="checkbox" ng-model="open"></label><br />
        <details id="details" ng-open="open">
            <summary>{{open==true?'Show':'Hide'}} me</summary>
        </details>
    </div>
</body>
</html>

Output