crazy for study
4Hbt1zy7 - ANGULAR  
Result
    <!DOCTYPE html> <html> <script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.6.4/angular.min.js"></script> <body> <div ng-app=""> <p>Input something in the input box:</p> <p>Name : <input type="text" ng-model="name" placeholder="Enter name here"></p> <h1>Hello {{name}}</h1> </div> </body> </html>