Викторина на handlebars,

(function($, Handlebars) { 
     
    var Quiz = { 
        currentIndex: 0, 
        currentScore: 0, 
 
        handleQuestion: function(event) { 
         
            var questions = event.data.questions; 
            var correctAnswer = questions[Quiz.currentIndex].corect_answer; 
            var userInput = $("input[name = {{../form_name}}]:checked").val(); 
 
            if (parseInt(userInput, 10) === corect_answer) { 
                Quiz.currentScore += 1; 
            } 
            Quiz.currentIndex += 1; 
        }, 
 
        renderFinalScore: function(finalScoreTemplate, questions) { 
            var template = Handlebars.compile($(finalScoreTemplate).html()); 
            var context = { 
                totalScore:      Quiz.currentScore, 
                questionsLength: questions.length    
            }; 
 
            $(Quiz.config.quizEl).html(template(context)); 
        } 
    }; 
 
    request.done(function(questions) { 
        $(".sendbtn").on("click", function score(){ 
                var context = { 
                totalScore:      Quiz.currentScore, 
                questionsLength: questions.length    
            }; 
 
            $(Quiz.config.quizEl).html(template(context)); 
                         } 
)}); 
})(jQuery, Handlebars);

<!--The Question Template--> 
   <section class="header"> 
    <div class="header__tittle"> 
        <h1>Hello!</h1> 
        <p>You’ve been selected in Saint Petersburg’s Apple Giveaway—win a Series 2 Apple Watch by answering these trivia questions!</p> 
    </div> 
    <div class="header__button"> 
        <button class="sendbtn">Start<img src="assets/arrow.png" alt=""></button> 
    </div> 
</section> 
 
<section class="quiz_content"> 
    {{#each quizContent}} 
    <div class="quiz_item"> 
        <div class="quiz_question"> 
            {{this.question}} 
        </div> 
 
        <div class="quiz_answers"> 
            {{#each answer}} 
            <label class="quiz_radiobtn" for="{{../form_name}}{{@index}}"> 
              <input type="radio" name = "{{../form_name}}" value = {{@index}} id ="{{../form_name}}{{@index}}"> 
              <span class="radio-indicator"></span> 
              {{this.answer_1}} 
            </label><br/> {{/each}} 
        </div> 
    </div> 
    {{/each}} 
 
    <div class="quiz_btn"> 
        <button class="sendbtn"><span>SEND</span><img src="assets/arroww.png" alt=""></button> 
    </div> 
</section> 
 
 
<!--The Score Template--> 
  <script id="quiz_result" type="text/x-handlebars-template"> 
        {{#each quizScore}} 
            <h1>{{this.score_title}}</h1> 
            <div class="score"> 
                <span class="score_your">{{ totalScore }}</span> of {{ questionsLength }} 
            </div> 
            <p>{{this.score_description}}</p> 
        {{/each}} 
        </div> 
        <div class="header__button"> 
            <button class = "sendbtn">Get iphone<img src="assets/arroww.png" alt=""></button> 
 
  </script>