Two-Way-Binding-Expression-Co

Two-Way-Binding-Expression-Concatenates

<!DOCTYPE html>
<html lang="en-US">
<head>
    <title>Welcome in the Angular JS</title>
    <script src="http://ajax.googleapis.com/ajax/libs/angularjs/1.4.0-rc.1/angular.min.js"></script>
</head>
<body ng-app>
    <div>
        First name <input type="text" ng-model="firstName" />
        Last name <input type="text" ng-model="lastName" />
        My Full Name is {{firstName + ' ' + lastName}}
    </div>
</body>
</html>

Output