多个下拉菜单按钮 - 仅打开单击按钮

Question

我找到了很好的拆分下拉菜单按钮脚本。

创建了多个按钮，问题是如果我单击一个按钮然后其他按钮的所有下拉菜单都会打开...

所以我想要完成的只是打开我没有点击页面上的所有菜单（每页 10 个帖子，所以我有 10 个按钮）的下拉菜单。

我猜我的 .js 文件中需要一些 id 识别代码。

我的脚本：

  $(function() {
  var splitBtn = $(".x-split-button");
  $("button.x-button-drop").on("click", function() {
    if (!splitBtn.hasClass("open"))
      splitBtn.addClass("open");
  });

  $(".x-split-button").click(function(event) {
    event.stopPropagation();
  });

  $("html").on("click", function() {
    if (splitBtn.hasClass("open"))
      splitBtn.removeClass("open");
  });
});

.x-split-button {
  position: relative;
  display: inline-block;
  text-align: left;
  margin-top: 20px;
}

.x-button {
  position: relative;
  margin: 0;
  height: 30px;
  float: left;
  outline: none;
  font-weight: 600;
  line-height: 27px;
  background: #F2F2F2;
  border: 1px solid #E0E0E0;
  box-shadow: 1px 1px 2px #E0E0E0;
}

.x-button:hover {
  cursor: pointer;
  background: #E0E0E0;
}

.x-button:active {
  background: #D3D3D3;
}

.x-button.x-button-drop {
  border-left: 0;
  height: 30px;
}

.open > .x-button-drop-menu {
  display: block;
}

.x-button-drop-menu {
  position: absolute;
  top: 27px;
  right: 0;
  z-index: 1000;
  display: none;
  float: left;
  min-width: 160px;
  padding: 5px 0;
  margin: 2px 0 0;
  font-size: 14px;
  list-style: none;
  background-color: #F2F2F2;
  color: #000000;
  background-clip: padding-box;
  border: 1px solid #E0E0E0;
  box-shadow: 1px 1px 2px #E0E0E0;
}

.x-button-drop-menu li a {
  display: block;
  padding: 3px 20px;
  clear: both;
  font-family: arial;
  color: #000000;
  text-decoration: none;
}

<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<center><font color="green">1st forum post....text goes here....</font><br/>

<span class="x-split-button">
      <button class="x-button x-button-main">Admin Options</button>
      <button class="x-button x-button-drop">&#9660;</button>
      <ul class="x-button-drop-menu">
        <li>
          <a href="">Edit</a>
        </li>
        <li>
          <a href="">Delete</a>
        </li>
        <li>
          <a href="">Move</a>
        </li>
      </ul>
    </span>
    
    <br/><br/><br/><br/><br/><font color="green">2nd forum post....text goes here....</font><br/>
    <span class="x-split-button">
      <button class="x-button x-button-main">Admin Options</button>
      <button class="x-button x-button-drop">&#9660;</button>
      <ul class="x-button-drop-menu">
        <li>
          <a href="">Edit</a>
        </li>
        <li>
        <a href="">Delete</a>
        </li>
        <li>
          <a href="">Move</a>
        </li>
      </ul>
    </span>
    </center>

Answer 1

jQuery $(this) 关注此函数中涉及的元素（Onclick）。我们使用最接近（）来到达父容器（.x-split-button），在这种情况下是目标元素。

我们也可以使用$(this).parent(".x-split-button").addClass("open");

在其他情况下，当容器不是直接父容器时，您可以使用$(this).parents();。

$(function() {
  var splitBtn = $(".x-split-button");
  $("button.x-button-drop").on("click", function() {
    if (!($(this).closest(".x-split-button").hasClass("open"))){
	splitBtn.removeClass("open");
  $(this).closest(".x-split-button").addClass("open");
}else{
  $(this).closest(".x-split-button").removeClass("open");
  }});

  $(".x-split-button").click(function(event) {
    event.stopPropagation();
  });

  $("body").on("click", function() {
    if (splitBtn.hasClass("open"))
      splitBtn.removeClass("open");
  });
});

.x-split-button {
  position: relative;
  display: inline-block;
  text-align: left;
  margin-top: 20px;
}

.x-button {
  position: relative;
  margin: 0;
  height: 30px;
  float: left;
  outline: none;
  font-weight: 600;
  line-height: 27px;
  background: #F2F2F2;
  border: 1px solid #E0E0E0;
  box-shadow: 1px 1px 2px #E0E0E0;
}

.x-button:hover {
  cursor: pointer;
  background: #E0E0E0;
}

.x-button:active {
  background: #D3D3D3;
}

.x-button.x-button-drop {
  border-left: 0;
  height: 30px;
}

.open > .x-button-drop-menu {
  display: block;
}

.x-button-drop-menu {
  position: absolute;
  top: 27px;
  right: 0;
  z-index: 1000;
  display: none;
  float: left;
  min-width: 160px;
  padding: 5px 0;
  margin: 2px 0 0;
  font-size: 14px;
  list-style: none;
  background-color: #F2F2F2;
  color: #000000;
  background-clip: padding-box;
  border: 1px solid #E0E0E0;
  box-shadow: 1px 1px 2px #E0E0E0;
}

.x-button-drop-menu li a {
  display: block;
  padding: 3px 20px;
  clear: both;
  font-family: arial;
  color: #000000;
  text-decoration: none;
}

<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<center><font color="green">1st forum post....text goes here....</font><br/>

<span class="x-split-button">
      <button class="x-button x-button-main">Admin Options</button>
      <button class="x-button x-button-drop">&#9660;</button>
      <ul class="x-button-drop-menu">
        <li>
          <a href="">Edit</a>
        </li>
        <li>
          <a href="">Delete</a>
        </li>
        <li>
          <a href="">Move</a>
        </li>
      </ul>
    </span>
    
    <br/><br/><br/><br/><br/><font color="green">2nd forum post....text goes here....</font><br/>
    <span class="x-split-button">
      <button class="x-button x-button-main">Admin Options</button>
      <button class="x-button x-button-drop">&#9660;</button>
      <ul class="x-button-drop-menu">
        <li>
          <a href="">Edit</a>
        </li>
        <li>
        <a href="">Delete</a>
        </li>
        <li>
          <a href="">Move</a>
        </li>
      </ul>
    </span>
    </center>