Ng-Readonly-2

In this either of two textbox become readonly on the basis of checkbox value because its value bind to open variable. 

<!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>Readonly Last Name field : <input type="checkbox" ng-model="open"></label><br />
        First Name:<input type="week" ng-readonly="!open" /><br />
        Last Name:<input type="week" ng-readonly="open" />
    </div>
</body>
</html>

Output