jQuery - 单击并启用按钮而不影响其他 foreach Laravel 数组

问题描述 投票:0回答:1

基于这个video,为什么click事件会影响数组的其他索引? 我尝试使用 .eq().index() 并将 id 更改为 class 选择器,但是如何操作?也许我做错了什么?

对于每个:

@foreach ($keranjang as $row)
      <table class="table table-bordered" style="border-width:6px">
          <thead class="thead-dark">
            <tr>
             ...
            </tr>
          </thead>
          <tbody>
            <tr>
             ...
              <td>
                <button onclick="this.parentNode.querySelector('#qty').stepDown()" class="min-btn" style="width: 20px">-</button>
                <input readonly class="qty" id="qty" style="width: 30px; text-align:center" type="number" 
                name="qty" value="{{$row->qty}}">
                <button onclick="this.parentNode.querySelector('#qty').stepUp()" class="plus-btn" style="width: 20px">+</button>
              </td>
              ...
            </tr>
          </tbody>
      </table>             
@endforeach

Jquery:

<script src="https://code.jquery.com/jquery-3.7.1.min.js" integrity="sha256-/JqT3SQfawRcv/BIHPThkBvs0OEvtFFmqPF/lYI/Cxo=" crossorigin="anonymous"></script>
<script>
  $(document).ready(function() {
    $('.qty').attr('min',1);
    $('.qty').attr('max',5);

      $('.min-btn').on('click', function() {
        $('.plus-btn').attr('disabled', false);
         if ($('.qty').val() == 1) 
         {
          $(this).attr('disabled', true);
         }
      });

      $('.plus-btn').on('click', function() {
        $('.min-btn').attr('disabled', false);
         if ($('.qty').val() == 5) 
         {
          $(this).attr('disabled', true);
         }   
      });
  });
</script>
jquery laravel indexing foreach
1个回答
0
投票

$('.plus-btn') $('.qty')
这些选择器针对多个 DOM 元素,这可能不是您想要的。您想要确定其范围并定位本地加号和减号按钮。

 $(document).ready(function() {
    $('.qty').attr('min',1);
    $('.qty').attr('max',5);

      $('.min-btn').on('click', function() {
        const $this = $(this);
        const $td = $this.closest("td");
        const $input = $td.find('.qty');
        
        $td.find('.plus-btn').attr('disabled', false);
        
        if($input.val() == 1){
          $this.attr('disabled', true);          
        }
      });

      $('.plus-btn').on('click', function() {
        const $this = $(this);
        const $td = $this.closest("td");
        const $input = $td.find('.qty');
        
        $td.find('.min-btn').attr('disabled', false);
        
        if($input.val() == 5){
          $this.attr('disabled', true);          
        }

      });
  });
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.7.1/jquery.min.js"></script>

 <table class="table table-bordered" style="border-width:6px">
          <thead class="thead-dark">
            <tr>
             ...
            </tr>
          </thead>
          <tbody>
            <tr>
             ...
              <td>
                <button onclick="this.parentNode.querySelector('#qty').stepDown()" class="min-btn" style="width: 20px">-</button>
                <input readonly class="qty" id="qty" style="width: 30px; text-align:center" type="number" 
                       name="qty" value="0">
                <button onclick="this.parentNode.querySelector('#qty').stepUp()" class="plus-btn" style="width: 20px">+</button>
              </td>

              <td>
                <button onclick="this.parentNode.querySelector('#qty').stepDown()" class="min-btn" style="width: 20px">-</button>
                <input readonly class="qty" id="qty" style="width: 30px; text-align:center" type="number" 
                       name="qty" value="1">
                <button onclick="this.parentNode.querySelector('#qty').stepUp()" class="plus-btn" style="width: 20px">+</button>
              </td>

              ...
            </tr>
          </tbody>
      </table> 

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