Question

我需要以正确或错误的形式标记答案。在我得到一些帮助的情况下，我想出了第一个问题是如何做到的，但现在我正在努力将其应用到其他问题中。这是我的代码：

<head>
<style type="text/css">
.wrong {width:250px ;border:1px solid #ff0000; border-style:solid; }
.right {width:250px; border:1px solid #00ff00; border-style:solid; }
</style>
</head>

<body>
<form id="office">
    <label id="ques1"> question 1</label>
        <div class="q1 q1a1"><input type="radio" name="question1"  value="q1a1" /> Answer1 <br/></div>
        <div class="q1 q1a2"><input type="radio" name="question1" value="q1a2" /> Answer2 <br/></div>
        <div class="q1 q1a3"><input type="radio" name="question1" value="q1a3" /> Answer3 <br/></div>
        <div class="q1 q1a4"><input type="radio" name="question1" value="q1a4" /> Answer4 <br/></div>

            <br/><br/>

    <label> question 2</label>
        <div class="q2 q2a1"><input type="radio" name="question2" value="q2a1"/> Answer1 <br/></div>
        <div class="q2 q2a2"><input type="radio" name="question2" value="q2a2"/> Answer2 <br/></div>
        <div class="q2 q2a3"><input type="radio" name="question2" value="q2a3"/> Answer3 <br/></div>
        <div class="q2 q2a4"><input type="radio" name="question2" value="q2a4"/> Answer4 <br/></div>

            <br/><br/>

    <label> question 3</label>
        <div class="q3 q3a1"><input type="radio" name="question3" value="q3a1"/> Answer1 <br/></div>
        <div class="q3 q3a1"><input type="radio" name="question3" value="q3a2"/> Answer2 <br/></div>
        <div class="q3 q3a1"><input type="radio" name="question3" value="q3a3"/> Answer3 <br/></div>
        <div class="q3 q3a1"><input type="radio" name="question3" value="q3a4"/> Answer4 <br/></div>

            <br/><br/>

    <label> question 4</label>
        <div class="q4 q4a1"><input type="radio" name="question4" value="q4a1"/> Answer1 <br/></div>
        <div class="q4 q4a2"><input type="radio" name="question4" value="q4a2"/> Answer2 <br/></div>
        <div class="q4 q4a2"><input type="radio" name="question4" value="q4a3"/> Answer3 <br/></div>
        <div class="q4 q4a4"><input type="radio" name="question4" value="q4a4"/> Answer4 <br/></div>

            <br/><br/>

    <label> question 5</label>
        <div class="q5 q5a1"><input type="radio" name="question5" value="q5a1"/> Answer1 <br/></div>
        <div class="q5 q5a2"><input type="radio" name="question5" value="q5a2"/> Answer2 <br/></div>
        <div class="q5 q5a3"><input type="radio" name="question5" value="q5a3"/> Answer3 <br/></div>
        <div class="q5 q5a4"><input type="radio" name="question5" value="q5a4"/> Answer4 <br/></div>

            <br/><br/>

    <label> question 6</label>
        <div class="q6 q6a1"><input type="radio" name="question6" value="q6a1"/> Answer1 <br/></div>
        <div class="q6 q6a2"><input type="radio" name="question6" value="q6a2"/> Answer2 <br/></div>
        <div class="q6 q6a3"><input type="radio" name="question6" value="q6a3"/> Answer3 <br/></div>
        <div class="q6 q6a4"><input type="radio" name="question6" value="q6a4"/> Answer4 <br/></div>

            <br/><br/>

    <label> question 7</label>
        <div class="q7 q7a1"><input type="radio" name="question7" value="q7a1"/> Answer1 <br/></div>
        <div class="q7 q7a2"><input type="radio" name="question7" value="q7a2"/> Answer2 <br/></div>
        <div class="q7 q7a3"><input type="radio" name="question7" value="q7a3"/> Answer3 <br/></div>
        <div class="q7 q7a4"><input type="radio" name="question7" value="q7a4"/> Answer4 <br/></div>

            <br/><br/>

    <label> question 8</label>
        <div class="q8 q8a1"><input type="radio" name="question8" value="q8a1"/> Answer1 <br/></div>
        <div class="q8 q8a2"><input type="radio" name="question8" value="q8a2"/> Answer2 <br/></div>
        <div class="q8 q8a3"><input type="radio" name="question8" value="q8a3"/> Answer3 <br/></div>
        <div class="q8 q8a4"><input type="radio" name="question8" value="q8a4"/> Answer4 <br/></div>

            <br/><br/>

    <label> question 9</label>
        <div class="q9 q9a1"><input type="radio" name="question9" value="q9a1"/> Answer1 <br/></div>
        <div class="q9 q9a2"><input type="radio" name="question9" value="q9a2"/> Answer2 <br/></div>
        <div class="q9 q9a3"><input type="radio" name="question9" value="q9a3"/> Answer3 <br/></div>
        <div class="q9 q9a4"><input type="radio" name="question9" value="q9a4"/> Answer4 <br/></div>

            <br/><br/>

    <label> question 10</label>
        <div class="q10 q10a1"><input type="radio" name="question10" value="q10a1"/> Answer1 <br/></div>
        <div class="q10 q10a2"><input type="radio" name="question10" value="q10a2"/> Answer2 <br/></div>
        <div class="q10 q10a3"><input type="radio" name="question10" value="q10a3"/> Answer3 <br/></div>
        <div class="q10 q10a4"><input type="radio" name="question10" value="q10a4"/> Answer4 <br/></div>

            <br/><br/>

    <input type="button" id="submit" name="submitAnswers" value="Submit Your   Answers" onclick="checkFunction()" />


</form>

<script type="text/javascript">


function checkFunction() {
var checked = document.querySelectorAll('input[type="radio"]:checked');
var div = document.querySelectorAll('div.'+checked[0].value);
console.dir(checked[0]);
if (checked[0].value === 'q1a3') {
  div[0].classList.add('right')
} else {
div[0].classList.add('wrong')
}

}; 

</script>   

</body>
</html>

有人可以协助吗？

我无法弄清楚[0]的含义以及如何使用它。另外，div变量和＆＃39; div的含义是什么？＆＃39; div。在querySelector中。

非常感谢!!

Answer 1

尝试for循环。首先在每个问题的正确答案中添加一类correctAnswer。例如，如果第一个div的正确答案是第三个答案，请在class="correctAnswer"属性之后添加代码value。

将类添加到每个正确答案后，请使用以下JavaScript：

function checkFunction() {
    var checked = document.querySelectorAll('input[type="radio"]:checked');

    for(i = 0; i < checked.length; i++){
        var div = document.querySelectorAll('div.'+checked[i].value);
        if (checked[i].classList.contains('correctAnswer')) {
            div[0].classList.add('right')
        } else {
            div[0].classList.add('wrong')
        }
    }
};

checked[0]基本上意味着您要从找到的元素数组中选择第一个元素。所以checked[1]意味着你要选择第二个元素，checked[2]意味着你要选择第三个元素，等等。

使用Array检查无线电表单上的多重答案

1 个答案: