检查单选按钮提交的值

Question

我正在尝试验证单击提交按钮时在单选按钮中找到的值。我不确定语法是否正确，这是我目前从网上找到的内容拼凑而成的。

   $(document).ready(function(){
    alert('testing');

// Create array to traverse so that on clicking submit, the current question
//is deleted, and the next question in the array is loaded.  
var questionsArray = [];

//Create counters for both correct answers and current question
var correctAnswers = 0;
var currentQuestion = 0;

//String to use for messages
var rightAnswer = "That's correct!  You have " + correctAnswers + " out of 10 correct!";
var wrongAnswer = "Oh dear, that's so so wrong! You have " + correctAnswers + " out of 10 correct";

//Contructor Function to create questions
function Question (question, choices, answer){
    this.question = question;
    this.choices = choices;
    this.answer = answer;
}

//Question Creations
questionsArray.push(new Question('Who is the Flash', ['Walter White', 'Johnny Cage', 'Barry Allen', 'Peter Parker'], 'Barry Allen'));

//Testing:

$('.q_question').append(questionsArray[0]['question']);
$('.btn1').after(questionsArray[0]['choices'][0]);
$('.btn2').after(questionsArray[0]['choices'][1]);
$('.btn3').after(questionsArray[0]['choices'][2]);
$('.btn4').after(questionsArray[0]['choices'][3]);

$('#submit').on('click', function(){
    alert('click!');   //Test to make sure the click on submit is being recorded.
    currentQuestion ++;
    var answer = $('input[name="1"]:checked').val();  //The .val() is new to me, pretty sure this is where I've gone wrong
    if(answer == questionsArray[0]['answer']){
        correctAnswers ++;
        $('.jumbotron').append(rightAnswer);
    } else {
        $('.jumbotron').append(wrongAnswer);
    }
});


});

HTML:

<!doctype html>
<html>
<head lang="en">
  <meta charset="UTF-8">
  <link rel="stylesheet" type="text/css" href='css/css.css'>
  <title>Super Awesome Quiz!</title>
 </head>
<body>
  <header class="header">
    <h1 classs = "title">Welcome to My Super Awesome Quiz!!</h1>
    <h3 class="question_counter">Ver. 1.1</h3>
  </header>


  <form class = "question">
    <h2 class= "q_title"> </h2>   <!-- Will use questionCounter here once created -->
    <h3 class="q_question"></h3>

      <input class='btn btn1' type="radio" name="1" value="answer" >
        <br>
      <input class='btn btn2' type="radio" name="1" value="answer" >
        <br>
      <input class='btn btn3' type="radio" name='1' value='answer' >
        <br>
      <input class='btn btn4' type="radio" name='1' value='answer' >
        <br>
      <input id="submit" type='submit' name='1' value='Submit'>
        <br>
  </form>
  <div class='jumbotron'>
    <h2></h2>
  </div>

  <script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.3/jquery.min.js"></script>
  <script src="js.js" type="text/javascript"></script>
 </body> 
</html>

Answer 1

问题是您没有更新无线电输入的值：

$('.q_question').append(questionsArray[0]['question']);
$('.btn1').after(questionsArray[0]['choices'][0]);
$('.btn1').val(questionsArray[0]['choices'][0]); // set value to option value
...

这将使输入的值保留可以与正确答案进行比较的实际值。

另一种选择是与单选按钮后的文本值进行比较。

检查单选按钮提交的值

Checking the value of radio button submission

javascript

arrays

jquery

form-submit