javascript - 如何将下拉区域与另一个下拉区域隔离

Question

我有两个下拉选项，当您单击值为“其他”的选项时，它会在下拉表单下方生成一个文本区域。

这两个区域都工作正常，但要做到这一点，我必须为这两个区域创建单独的父包装器，我不希望这样做，因为我将动态添加更多下拉菜单，并且很难动态地制作更独特的父包装器 div。

我希望每个下拉列表都彼此不同，并生成自己的文本框。

我已经在这个 pen 中提供了整个代码。

• 代码供您引用

HTML

        <section id="alterationForm1">
      <div class="card">
        <div class="imgCard">
          <img src="http://abhisheksuresh.online/alter/assets/uploadImage.svg" alt="upload-image" height="128px" width="128px">
          <span class="badge badge-success" style="z-index: 1; position: absolute;" data-toggle="tooltip" data-placement="left" title="Tap on the image to upload picture of your defected garment"><i class="fa fa-question-circle" aria-hidden="true"></i></span>
        </div>
        <!--Dropdown List-->
        <div class="form-group">
          <label for="exampleFormControlSelect1"><p class="dropDownLabel">Select alteration type</p></label>
          <select class="form-control alterationTypeSelect" name="alterationTypeSelect">
                  <option value="button">Button</option>
                  <option value="stitching">Stitching</option>
                  <option value="cloth">Cloth</option>
                  <option value="fabrics">Fabrics</option>
                  <option value="otherClick">Other</option>
                </select>
        </div>
        <div class="hideMe textBoxDiv">
          <div class="form-group">
            <label for="exampleFormControlTextarea1">Additional alteration details</label>
            <textarea class="form-control" id="exampleFormControlTextarea1" rows="3"></textarea>
                    </div>
                </div><!--text box div-->
                 <div class="submitButton text-center">
                     <a href="#" class="btn btn-success btn-pill">Submit</a>
                 </div><!--submitButton-->
              </div><!--card-->
    </section><!--alteration form-->
    <div data-duplicate="demo" class="demoClass">
            <div class="card">
            <div class="imgCard">
                <img src="http://abhisheksuresh.online/alter/assets/uploadImage.svg" alt="upload-image" height="128px" width="128px">
                <span class="badge badge-success" style="z-index: 1; position: absolute;" data-toggle="tooltip" data-placement="left" title="Tap on the image to upload picture of your defected garment"><i class="fa fa-question-circle" aria-hidden="true"></i></span>
            </div>
            <!--Dropdown List-->
            <div class="form-group">
                <label for="exampleFormControlSelect1"><p class="dropDownLabel">Select alteration type</p></label>
                <select class="form-control alterationTypeSelect" name="alterationTypeSelect">
                  <option value="button">Button</option>
                  <option value="stitching">Stitching</option>
                  <option value="cloth">Cloth</option>
                  <option value="fabrics">Fabrics</option>
                  <option value="otherClick">Other</option>
                </select>
            </div>
            <div class="hideMe textBoxDiv">
                <div class="form-group">
                    <label for="exampleFormControlTextarea1">Additional alteration details</label>
                    <textarea class="form-control" id="exampleFormControlTextarea1" rows="3"></textarea>
                </div>
            </div><!--text box div-->
            <div class="submitButton text-center">
                <a href="#" class="btn btn-success btn-pill">Submit</a>
            </div><!--submitButton-->
    </div><!--card-->
         <div id="addOnButton" class="text-center">
            <button class="btn-danger btn-sm" data-duplicate-add="demo">Add More</button>
        </div>
    </div><!--demo class-->

JS

    //When clicked on option with "other" value
    $('#alterationForm1 .alterationTypeSelect').on('change', function(){
      var val = $(this).val();
      if(val === 'otherClick') {
        $('#alterationForm1 .textBoxDiv').removeClass('hideMe');
      }
        else{
            $('#alterationForm1 .textBoxDiv').addClass('hideMe');
        }
      });
    $('#alterationSection2 .alterationTypeSelect').on('change', function(){
      var val = $(this).val();
      if (val === 'otherClick') {
        $('#alterationSection2 .textBoxDiv').removeClass('hideMe');
      }
        else{
            $('#alterationSection2 .textBoxDiv').addClass('hideMe');
        }
      });

    $('.demoClass .alterationTypeSelect').on('change',function(){
         var val = $(this).val();
      if (val === 'otherClick') {
        $('.demoClass .textBoxDiv').removeClass('hideMe');
      }
        else{
            $('.demoClass .textBoxDiv').addClass('hideMe');
        }
      });


    //Dynamic Adding
    $("#czContainer").czMore();

非常感谢您的帮助。我非常需要这种帮助。请找到笔link更好地理解整个问题。

Answer 1

请按照下面的笔操作，因为我修改了您的代码，因为我们希望动态触发元素:

https://codepen.io/anon/pen/NYyvpy?editors=1011

    //question mark tooltip
    $('[data-toggle="tooltip"]').tooltip()
    //When clicked on other button
    $('body').on('change','.alterationTypeSelect', function(){
      console.log(544);
      var val = $(this).val();
      if(val === 'otherClick') {
        $(this).parent().parent().find('.textBoxDiv').removeClass('hideMe');
      }
        else{
            $(this).parent().parent().find('.textBoxDiv').addClass('hideMe');
        }
      });

    //Dynamic Adding
    $("#czContainer").czMore();

此外，如果您想了解新添加的元素如何与事件配合使用，请点击此链接

Event binding on dynamically created elements?