jquery - 单击时展开相应的 ul

Question

我如何通过点击 button1 来扩展最近的对应 ul.dropmenu 而不是给它们一个单独的 id/class？

HTML:

<ul class="mainlist">
            <li><img id="wall1.thumb" class="icon" src="/images/placeholder.jpg">
                <img class="button1 d1" src="/images/info.png">
                <ul class="dropmenu menu1">
                    <p id="wall1.info">
                       <div>File Size:</div>
                       <div>Upload Date:</div>
                       <div>Dimensions:</div>
                    </p>
                </ul>
            </li>
            <li><img id="wall2.thumb" class="icon" src="/images/placeholder.jpg">
                <img class="button1 d2" src="/images/info.png”>                    
                <ul class="dropmenu menu2">
                   <p id="wall2.info">
                      <div>File Size:</div>
                      <div>Upload Date:</div>
                      <div>Dimensions:</div>
                   </p>
                </ul>
           </li>
</ul>

j查询:

$(".d1").on("click", function () {
    $("ul.dropmenu.menu1").slideToggle("fast", "linear", function() {
    $("ul.dropmenu").not("ul.dropmenu.menu1").slideUp(200, "swing");
  })
})

$(".d2").on("click", function () {
    $("ul.dropmenu.menu2").slideToggle("fast", "linear", function() {
        $("ul.dropmenu").not("ul.dropmenu.menu2").slideUp(200, "swing");
  })
})

我已经在这里看到了建议的问题:open closest ul on click jQuery 但是它并没有解决我的问题，因为我试图在 ul 内的 li 内扩展 ul 而不仅仅是 ul 内的 li

Answer 1

使用 siblings() 函数获取点击按钮附近的下拉菜单

$(".d1,.d2").on("click", function() {  
  var closestUl = $(this).siblings("ul.dropmenu")  
  closestUl.slideToggle("fast", "linear", function() {
    $("ul.dropmenu").not(closestUl).slideUp(200, "swing");
  })
})

<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<ul class="mainlist">
  <li>
    <img id="wall1.thumb" class="icon" src="/images/placeholder.jpg" />
    <img class="button1 d1" src="/images/info.png" />
    <ul class="dropmenu menu1">
      <p id="wall1.info">
        <div>File Size:</div>
        <div>Upload Date:</div>
        <div>Dimensions:</div>
      </p>
    </ul>
  </li>
  <li>
    <img id="wall2.thumb" class="icon" src="/images/placeholder.jpg" />
    <img class="button1 d2" src="/images/info.png" />
    <ul class="dropmenu menu2">
       <p id="wall2.info ">
         <div>File Size:</div>
         <div>Upload Date:</div>
         <div>Dimensions:</div>
       </p>
    </ul>
  </li>            
</ul>