javascript - jQuery 找到最接近的 ID 并删除其中一个类名

Question

嘿，我想弄清楚如何找到DIV的下一个最接近的ID，然后我需要替换一个> 其类名 (class="something0 Something1 Something2")。

我必须使用的是这个html:

<div class="col-sm-10">
    <select class="tips form-control searchable-select-holder-req" data-tooltip="example 1" data-val="" id="environment" name="environment" style="width: 260px; display: none;">
        <option value="1">IT</option>
        <option value="2">FRASTRUCTURE</option>
        <option value="3">blah 2</option>
        <option value="4">blah 3</option>
        <option value="5">blah 4</option>
        <option value="6">blah 5</option>
        <option value="7">blah 6</option>
        <option value="8">SPARE</option>
        <option value="9">LAB</option>
        <option value="10">STUDY</option>
    </select>
    <div tabindex="0" class="searchable-select" style="width: 260px; min-width: 260px;">
        <div class="tips searchable-select-holder searchable-select-holder-req" data-tooltip="example 1" data-tag="environment"></div>
        <div class="searchable-select-dropdown">
            <span>Search:</span> 
            <input type="text" class="searchable-select-input" style="width: 250px; max-width: 185px; background-color: rgb(254, 231, 231);" />
            <div class="searchable-scroll has-next">
                <div class="searchable-has-privious searchable-select-hide">...</div>
                <div class="searchable-select-items mCustomScrollbar _mCS_2" style="font-family: Courier New, Courier, monospace;">
                    <div id="mCSB_2" class="mCustomScrollBox mCS-bodyScroll mCSB_vertical mCSB_inside" style="max-height: 185px;" tabindex="0">
                        <div id="mCSB_2_container" class="mCSB_container" style="position:relative; top:0; left:0;" dir="ltr">
                          <div class="searchable-select-item" data-value=""></div>
                          <div class="searchable-select-item" data-value="1">IT</div>
                          <div class="searchable-select-item" data-value="2">FRASTRUCTURE</div>
                          <div class="searchable-select-item" data-value="3">blah 2</div>
                          <div class="searchable-select-item selected" data-value="4">blah 3</div>
                          <div class="searchable-select-item" data-value="5">blah 4</div>
                          <div class="searchable-select-item" data-value="6">blah 5</div>
                          <div class="searchable-select-item" data-value="7">blah 6</div>
                          <div class="searchable-select-item" data-value="8">SPARE</div>
                          <div class="searchable-select-item" data-value="9">LAB</div>
                          <div class="searchable-select-item" data-value="10">STUDY</div>
                        </div>
                        <div id="mCSB_2_scrollbar_vertical" class="mCSB_scrollTools mCSB_2_scrollbar mCS-bodyScroll mCSB_scrollTools_vertical mCSB_scrollTools_onDrag_expand" style="display: block;">
                            <div class="mCSB_draggerContainer">
                                <div id="mCSB_2_dragger_vertical" class="mCSB_dragger" style="position: absolute; min-height: 30px; top: 0px; display: block; height: 104px; max-height: 175px;" oncontextmenu="return false;">
                                    <div class="mCSB_dragger_bar" style="line-height: 30px;"></div>
                                </div>
                                <div class="mCSB_draggerRail"></div>
                            </div>
                        </div>
                    </div>
                </div>
                <div class="searchable-has-next">...</div>
            </div>
        </div>
    </div>
</div>

我目前正在代码的data-tag="enviroment"部分更改内部文本，我可以毫无问题地做到这一点。现在，我需要从那里找到ID为mCSB_2_container的下一个/最近 div，然后在其中找到DIV具有 selected 类，删除它并将其放置在第一个 div 项上(此处为空白值)。

这是我当前用来到达 **** 部分的 JS:

$("select").each(function() {
   $('[data-tag="' + this.id + '"]').text(''); //Clears Text
   //$(this).next('#mCSB_2_container').removeClass("selected");
});

正如您从代码中看到的，我尝试使用 $(this).next('#mCSB_2_container').removeClass("selected"); 但这似乎不起作用，因为它在 mCSB_2_container 中查找类名 selected。

任何帮助解决这个问题都会很棒!

Answer 1

您可以使用find()来查找选定的类，例如:$(this).next('.searchable-select').find('.selected').removeClass (“选定”)；。请参阅下面的工作片段:

$("select").each(function() {
  $('[data-tag="' + this.id + '"]').text(''); //Clears Text
  $(this).next('.searchable-select').find('.selected').removeClass("selected");
  $(this).next('.searchable-select').find('.searchable-select-item:first-child').addClass('selected');
});

.selected {
  background: #f00;
}

<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<div class="col-sm-10">
  <select class="tips form-control searchable-select-holder-req" data-tooltip="example 1" data-val="" id="environment" name="environment" style="width: 260px;">
        <option value="1">IT</option>
        <option value="2">INFRASTRUCTURE</option>
        <option value="3">blah</option>
        <option value="4">blah</option>
        <option value="5">blah</option>
        <option value="6">blah</option>
        <option value="7">blah</option>
        <option value="8">SPARE</option>
        <option value="9">LAB</option>
        <option value="10">STUDY</option>
    </select>
  <div tabindex="0" class="searchable-select" style="width: 260px; min-width: 260px;">
    <div class="tips searchable-select-holder searchable-select-holder-req" data-tooltip="example 1" data-tag="environment"></div>
    <div class="searchable-select-dropdown">
      <span>Search:</span>
      <input type="text" class="searchable-select-input" style="width: 250px; max-width: 185px; background-color: rgb(254, 231, 231);" />
      <div class="searchable-scroll has-next">
        <div class="searchable-has-privious searchable-select-hide">...</div>
        <div class="searchable-select-items mCustomScrollbar _mCS_2" style="font-family: Courier New, Courier, monospace;">
          <div id="mCSB_2" class="mCustomScrollBox mCS-bodyScroll mCSB_vertical mCSB_inside" style="max-height: 185px;" tabindex="0">
            <div id="mCSB_2_container" class="mCSB_container" style="position:relative; top:0; left:0;" dir="ltr">
              <div class="searchable-select-item" data-value="">first item</div>
              <div class="searchable-select-item" data-value="1">IT</div>
              <div class="searchable-select-item" data-value="2">FRASTRUCTURE</div>
              <div class="searchable-select-item" data-value="3">blah 2</div>
              <div class="searchable-select-item selected" data-value="4">blah 3</div>
              <div class="searchable-select-item" data-value="5">blah 4</div>
              <div class="searchable-select-item" data-value="6">blah 5</div>
              <div class="searchable-select-item" data-value="7">blah 6</div>
              <div class="searchable-select-item" data-value="8">SPARE</div>
              <div class="searchable-select-item" data-value="9">LAB</div>
              <div class="searchable-select-item" data-value="10">STUDY</div>
            </div>
            <div id="mCSB_2_scrollbar_vertical" class="mCSB_scrollTools mCSB_2_scrollbar mCS-bodyScroll mCSB_scrollTools_vertical mCSB_scrollTools_onDrag_expand" style="display: block;">
              <div class="mCSB_draggerContainer">
                <div id="mCSB_2_dragger_vertical" class="mCSB_dragger" style="position: absolute; min-height: 30px; top: 0px; display: block; height: 104px; max-height: 175px;" oncontextmenu="return false;">
                  <div class="mCSB_dragger_bar" style="line-height: 30px;"></div>
                </div>
                <div class="mCSB_draggerRail"></div>
              </div>
            </div>
          </div>
        </div>
        <div class="searchable-has-next">...</div>
      </div>
    </div>
  </div>
</div>