Jquery选择以前的单选按钮值而不是当前值？答案

【问题标题】：Jquery selecting previous radio button value and not current?Jquery选择以前的单选按钮值而不是当前值？
【发布时间】：2020-02-27 06:04:47
【问题描述】：

我正在尝试获取所选单选按钮的当前值，但它一直在获取上一个按钮而不是当前按钮。您必须双击它才能获得当前按钮。

看了之前的回答，还是不明白，谢谢。

密码笔https://codepen.io/AdamChicago/pen/oNXZypq

<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <meta http-equiv="X-UA-Compatible" content="ie=edge">
  <title>D</title>

  <link rel="stylesheet" href="https://stackpath.bootstrapcdn.com/bootstrap/4.4.1/css/bootstrap.min.css">

  <script src="https://ajax.googleapis.com/ajax/libs/jquery/3.4.1/jquery.min.js"></script>
  <script src="https://stackpath.bootstrapcdn.com/bootstrap/4.3.1/js/bootstrap.min.js"></script>
</head>
<body>

  <button class="btn btn-dark" type="button" data-toggle="collapse" data-target="#collapseExample3" aria-expanded="false" aria-controls="collapseExample">
    BUTTON
  </button>
  <div class="collapse" id="collapseExample3">
    <div class="card card-body" style="background-color: rgb(65, 72, 78); border: none">
      <div id="SortBTNS" class="btn-group btn-group-toggle" data-toggle="buttons">
        <label class="btn btn-outline-info">
          <input type="radio" name="options" id="SortPopular" value = "MostPopular" autocomplete="off"> Most Popular
        </label>
        <label class="btn btn-outline-info">
          <input type="radio" name="options" id="SortTop" value = "TopRated" autocomplete="off"> Top Rated
        </label>
        <label class="btn btn-outline-info">
          <input type="radio" name="options" id="SortTrending" value = "Trending" autocomplete="off"> Trending
        </label>
        <label class="btn btn-outline-info active">
          <input type="radio" name="options" id="SortAZ" value = "A-Z" autocomplete="off" chedcked> A - Z
        </label>
      </div>
    </div>
  </div>
</body>
<script>
  $('#SortBTNS').on('click', function() {
    console.log($('#SortBTNS label.active input').val())
  })
</script>
</html>

【问题讨论】：

标签： javascript jquery radio-button

【解决方案1】：

改用此代码

<!DOCTYPE html>
<html lang="en">
   <head>
      <meta charset="UTF-8">
      <meta name="viewport" content="width=device-width, initial-scale=1.0">
      <meta http-equiv="X-UA-Compatible" content="ie=edge">
      <title>D</title>
      <link rel="stylesheet" href="https://stackpath.bootstrapcdn.com/bootstrap/4.4.1/css/bootstrap.min.css">
      <script src="https://ajax.googleapis.com/ajax/libs/jquery/3.4.1/jquery.min.js"></script>
      <script src="https://stackpath.bootstrapcdn.com/bootstrap/4.3.1/js/bootstrap.min.js"></script>
   </head>
   <body>
      <button class="btn btn-dark" type="button" data-toggle="collapse" data-target="#collapseExample3" aria-expanded="false" aria-controls="collapseExample">
      <i class="fas fa-sort"></i>
      </button>
      <div class="collapse" id="collapseExample3">
         <div class="card card-body" style="background-color: rgb(65, 72, 78); border: none">
            <div id="SortBTNS" class="btn-group btn-group-toggle" data-toggle="buttons">
               <label class="btn btn-outline-info">
               <input type="radio" name="options" id="SortPopular" value = "MostPopular" autocomplete="off"> Most Popular
               </label>
               <label class="btn btn-outline-info">
               <input type="radio" name="options" id="SortTop" value = "TopRated" autocomplete="off"> Top Rated
               </label>
               <label class="btn btn-outline-info">
               <input type="radio" name="options" id="SortTrending" value = "Trending" autocomplete="off"> Trending
               </label>
               <label class="btn btn-outline-info active">
               <input type="radio" name="options" id="SortAZ" value = "A-Z" autocomplete="off" chedcked> A - Z
               </label>
            </div>
         </div>
      </div>
   </body>
   <script>
      $('#SortBTNS').on('click', function(e) {
        console.log(e.target.children[0].value)
      
      })
   </script>
</html>

【讨论】：