【问题标题】:retrieve selected radio button value in a image检索图像中选定的单选按钮值
【发布时间】:2017-01-27 00:51:53
【问题描述】:

我想根据用户选择显示单选按钮值,但在提醒时我没有得到值。 我还想将单选按钮值显示为图像..就像当用户选择男性然后男性图片显示时

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Document</title>
</head>
<body>
<form id="test">
<h4>Gender</h4>
  <input type="radio" name="gender" value="male"> Male<br>
  <input type="radio" name="gender" value="female"> Female<br>
  <h4>Occupation</h4>
  <input type="radio" name="occupation" value="PvtJob">Pvt. Job<br>
  <input type="radio" name="occupation" value="Govt">Govt. Employee<br>
  <h4>Loan Type</h4>
  <input type="radio" name="loan" value="Personal">Personal Loan<br>
  <input type="radio" name="loan" value="Health">Health Loan<br><br>
<button class="btn btn-primary pull-right place-order-button" name="submit" value="submit" onclick="return myFunction()" type="submit" >Finish</button>
</form>
</body>
<script type="text/javascript">
    function myFunction() {
        var radioButtons =["gender","occupation","loan"];

        for( var x = 0; x < radioButtons.length; x ++) {
            if ($('input[name = "'+radioButtons[x]+'"]:checked','#test').val()) {
                alert("You checked " + $('input[name = "'+radioButtons[x]+'"]:checked','#test').attr('id'));
                alert("Value is " + $('input[name = "'+radioButtons[x]+'"]:checked','#test').val());
        }
    }
}
</script>
</html>

【问题讨论】:

  • 按钮单击或单选按钮单击时是否需要这样做?
  • 如果条件不正确,我想你。
  • 你需要添加对jQuery库的引用

标签: javascript jquery html radio-button radio


【解决方案1】:

在您的代码中包含 jquery,并且您的输入中提到了 snot 属性 id。您的代码中也没有诸如 test 之类的 id。 你也不需要再重复选择器,你可以简单地使用$(this)

试试下面的 sn-p。

function myFunction() {
        var radioButtons =["gender","occupation","loan"];

        for( var x = 0; x < radioButtons.length; x ++) {
            if ($('input[name = "'+radioButtons[x]+'"]:checked').val()) {
                alert("Value is " + $(this).val());
        }
    }
}
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>

<body>
<form id="test">
<h4>Gender</h4>
  <input type="radio" name="gender" value="male"> Male<br>
  <input type="radio" name="gender" value="female"> Female<br>
  <h4>Occupation</h4>
  <input type="radio" name="occupation" value="PvtJob">Pvt. Job<br>
  <input type="radio" name="occupation" value="Govt">Govt. Employee<br>
  <h4>Loan Type</h4>
  <input type="radio" name="loan" value="Personal">Personal Loan<br>
  <input type="radio" name="loan" value="Health">Health Loan<br><br>
<button class="btn btn-primary pull-right place-order-button" name="submit" value="submit" onclick="return myFunction()" type="submit" >Finish</button>
</form>
</body>

【讨论】:

    【解决方案2】:

    由于您使用的是 Jquery 功能,因此您需要在标题中添加 Jquery 库。请添加

    <script src="https://ajax.googleapis.com/ajax/libs/jquery/1.12.4/jquery.min.js"></script>
    

    进入标题部分并尝试

    【讨论】:

      【解决方案3】:

      您可以使用对象的length 属性检查所选元素。还 在您的 HTML 页面中添加 jquery 库路径

          function myFunction() {
              var radioButtons =["gender","occupation","loan"];
      
              for( var x = 0; x < radioButtons.length; x ++) {
                  selected=$('input[name = "'+radioButtons[x]+'"]:checked','#test');
                  if (selected.length>0) {
                    
                      alert(radioButtons[x] + "::  Value is " + selected.val());
              }
          }
      }
      <script src="https://ajax.googleapis.com/ajax/libs/jquery/2.0.0/jquery.min.js"></script>
      <form id="test">
      <h4>Gender</h4>
        <input type="radio" name="gender" value="male" id=""> Male<br>
        <input type="radio" name="gender" value="female"> Female<br>
        <h4>Occupation</h4>
        <input type="radio" name="occupation" value="PvtJob">Pvt. Job<br>
        <input type="radio" name="occupation" value="Govt">Govt. Employee<br>
        <h4>Loan Type</h4>
        <input type="radio" name="loan" value="Personal">Personal Loan<br>
        <input type="radio" name="loan" value="Health">Health Loan<br><br>
      <button class="btn btn-primary pull-right place-order-button" name="submit" value="submit" onclick="return myFunction()" type="submit" >Finish</button>
      </form>

      【讨论】:

      • 你走在正确的道路上.. 但我想将选定的值显示为像选择男性这样的 div 中的图像然后它显示男性图片而不是男性.. 提前致谢。
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