Question

我有一个模式，允许用户重复输入，以便他们可以从下拉菜单中添加用户并调整权限。

当前，我只能使用他们的选择来更新最新的下拉按钮。如果他们添加了三个用户并为第一个选择“ read”，则只会更新最新的条目。每个下拉文本都有不同的跨度。简化的代码在下面列出，但完整版本可以在here中看到。

  <!-- Modal -->
<div class="modal fade new" id="new" tabindex="-1" role="dialog" aria-labelledby="new_modal" aria-hidden="true">
  <div class="modal-dialog modal-dialog-centered" role="document">
    <div class="modal-content">
      <div class="modal-header">
        <h5 class="modal-title" id="permissions">Permissions</h5>
        <button type="button" class="close" data-dismiss="modal" aria-label="Close">
          <span aria-hidden="true"><i class="fas fa-times"></i></span>
        </button>
      </div>
      <div class="modal-body">
        <ul class="nav nav-tabs" id="myTab" role="tablist">
          <li class="nav-item">
            <a class="nav-link active" id="users-tab" data-toggle="tab" href="#users" role="tab" aria-controls="users" aria-selected="true">Users</a>
          </li>
          <li class="nav-item">
            <a class="nav-link" id="groups-tab" data-toggle="tab" href="#groups" role="tab" aria-controls="groups" aria-selected="false">Groups</a>
          </li>
        </ul>
        <div class="tab-content" id="myTabContent">
          <!-- Content for the users tab -->
          <div class="tab-pane fade show active" id="users" role="tabpanel" aria-labelledby="users-tab">
            <div class="wrapper">
              <div class="users">
                <u><h6>Name</h6></u>
                <span id="name"></span>
              </div>
              <div class="permissions">
                <u><h6>Access Level</h6></u>
                <span id="access_level"></span>
              </div>
            </div>
          </div>
          <!-- Content for the groups tab -->
          <div class="tab-pane fade" id="groups" role="tabpanel" aria-labelledby="groups-tab">
            Group Level Permissions
          </div>
        </div>
      </div>
      <div class="modal-footer">
        <button type="button" class="btn btn-success" id="new_rule"><i class="fas fa-plus"></i></button>
        <button type="button" class="btn btn-primary" data-dismiss="modal" data-toggle="modal" data-target="#saved" id="save">Save</button>
      </div>
    </div>
  </div>
</div>

<!-- Optional JavaScript -->
<!-- jQuery first, then Popper.js, then Bootstrap JS -->

<script src="https://code.jquery.com/jquery-3.3.1.js"integrity="sha256-2Kok7MbOyxpgUVvAk/HJ2jigOSYS2auK4Pfzbm7uH60="crossorigin="anonymous"></script>
<script src="https://code.jquery.com/jquery-3.3.1.slim.min.js" integrity="sha384-q8i/X+965DzO0rT7abK41JStQIAqVgRVzpbzo5smXKp4YfRvH+8abtTE1Pi6jizo" crossorigin="anonymous"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/popper.js/1.14.3/umd/popper.min.js" integrity="sha384-ZMP7rVo3mIykV+2+9J3UJ46jBk0WLaUAdn689aCwoqbBJiSnjAK/l8WvCWPIPm49" crossorigin="anonymous"></script>
<script src="https://stackpath.bootstrapcdn.com/bootstrap/4.1.3/js/bootstrap.min.js" integrity="sha384-ChfqqxuZUCnJSK3+MXmPNIyE6ZbWh2IMqE241rYiqJxyMiZ6OW/JmZQ5stwEULTy" crossorigin="anonymous"></script>
<script type="text/javascript">
$(document).ready(function() {
    var i = 1;
    // When the user cicks the + icon, a new input and dropdown list will appear
    $("#new_rule").click(function() {
        // markup for the dropdown
        var button = "<div class='btn-group'><button type='button' name='options' id='options' class='btn btn-danger dropdown-toggle' data-toggle='dropdown' aria-haspopup='true' aria-expanded='false'><span id='selected"+i+"'><span id='text'>Read</span></span></button><div class='dropdown-menu'><a class='dropdown-item 'href='#'>Read</a><a class='dropdown-item' href='#'>Write</a><a class='dropdown-item' href='#'>Full Control</a><div class='dropdown-divider'></div><a class='dropdown-item' href='#'>Learn More</a></div></div>"
        // Markup for the name input
        var input = "<input type='text' name='name' placeholder='name' class='form-control'>";
        // Prepend the markup to the spans
        $("#name").prepend(input);
        $("#access_level").prepend(button);
        // Update the dropdown to reflect what they selected *this is currently broken*
        $('.dropdown-menu a').click(function(){
         $('#text').text($(this).text());
       })
       // Increment the span ID so each dropdown has a different span.
       i++
    });
    // When they click "Save", we gather their inputs into two separate JSON arrays for POST
    $("#save").click(function() {
      // Gather the names that were entered and dump them into a JSON array
      var value = $("input[name='name']")
          .map(function() {
              return $(this).val();
          }).get();
        var jsonStr = JSON.stringify(value);
        console.log(jsonStr);

        $('#options').each(function(){
          // Gather the access level assigned to those names and dump them into a JSON array.
          var accessLevel = $("button[name='options']").map(function(){
            return $(this).text();
          }).get();
          console.log(JSON.stringify(accessLevel));
        });
      });
    });
</script>

Answer 1

所以，您的问题出在（如您所说的）虚线上：

$('#text').text($(this).text());

这将找到ID为'text'的第一个元素，并使用您选择的文本设置该元素的文本。当然，一旦添加了多个规则，您将获得ID为“ text”的多个跨度（无论如何这不是一个好主意。请参见此处：https://stackoverflow.com/a/44009054/1178830）。

您可以给他们每个人一个自己的ID（例如，text1，text2 ...），也可以通过将上面的行替换为类似的内容来尝试查找没有ID的元素：

$(this).parent().siblings('button').find('span').text($(this).text());

这当然很大程度上取决于您在“按钮”变量中添加的元素的结构。

通过用户选择来更新多个下拉列表

1 个答案: