输入检查后隐藏自定义下拉菜单 li

Question

我有一个纯 html 的自定义下拉菜单。我已经尽一切努力让它关闭，但没有任何效果。我只是希望它在选择某些内容/单击菜单外的某个位置后关闭。看来我的自定义 CSS 阻止了任何简单的解决方案。

这是我拥有的代码以及 css 和当前的 js。我知道这可能是一个常见问题，但我仍然是 javascript 的新手，即使我觉得我已经实现了所有我能做到的解决方案，但我可能没有正确地做到这一点。谢谢

$('#dropdown li').click(function() {
  $(".dd-button:first-child").text($(this).text());
});

.dropdown {
  display: inline-block;
  position: relative;
}

.wrapper {
  text-align: center;
  align-items: center;
  align-content: center;
  margin-left: -25%;
}

.dd-button {
  display: inline-block;
  border: 1px solid gray;
  border-radius: 4px;
  padding: 10px 30px 10px 20px;
  background-color: #ffffff;
  cursor: pointer;
  white-space: nowrap;
  width: 375px;
}

.dd-button:after {
  content: '';
  position: absolute;
  top: 50%;
  left: 90%;
  transform: translateY(-50%);
  width: 0;
  height: 0;
  border-left: 5px solid transparent;
  border-right: 5px solid transparent;
  border-top: 5px solid black;
}

.dd-button:hover {
  background-color: #eeeeee;
}

.dd-input {
  display: none;
}

.dd-menu {
  position: relative;
  top: 100%;
  border: 1px solid #ccc;
  border-radius: 4px;
  padding: 0;
  margin: 2px 0 0 0;
  box-shadow: 0 0 6px 0 rgba(0, 0, 0, 0.1);
  background-color: #ffffff;
  list-style-type: none;
  width: 375px;
}

.dd-input+.dd-menu {
  display: none;
}

.dd-input:checked+.dd-menu {
  display: block;
}

.dd-menu li {
  padding: 10px 20px;
  cursor: pointer;
  white-space: nowrap;
}

.dd-menu li:hover {
  background-color: #f6f6f6;
}

.dd-menu li a {
  display: block;
  margin: -10px -20px;
  padding: 10px 20px;
}

.dd-menu li.divider {
  padding: 0;
  border-bottom: 1px solid #cccccc;
}

<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<div class="wrapper">
  <div id="result"></div>
  <label class="dropdown" name="dropdown">
    <div class="dd-button"> Selection</div>
    <input type="checkbox" class="dd-input center-block" id="test">
    <ul id = "dropdown"  class="dd-menu">
      <li>plan1 </li>
      <li>plan2 </li>
      <li>plan3 </li>
      <li>Plan4 </li>
    </ul>
  </label>
</div>

Answer 1

您可以简单地使用$(event.target).hasClass() 条件来打开或隐藏下拉菜单...

也不要在label 中使用div，因为

Element div not allowed as child of element label in this context.

堆栈片段

$('#dropdown li').click(function() {
  $(".dd-button:first-child").text($(this).text());
});
$(document).on("click", function(event) {
  if ($(event.target).hasClass("dd-button")) {
    $("#dropdown").slideDown("fast");
  } else {
    $("#dropdown").slideUp("fast");
  }
});

.dropdown {
  display: inline-block;
  position: relative;
}

.wrapper {
  text-align: center;
  align-items: center;
  align-content: center;
}

.dd-button {
  display: inline-block;
  border: 1px solid gray;
  border-radius: 4px;
  padding: 10px 30px 10px 20px;
  background-color: #ffffff;
  cursor: pointer;
  white-space: nowrap;
  width: 375px;
}

.dd-button:after {
  content: '';
  position: absolute;
  top: 50%;
  left: 90%;
  transform: translateY(-50%);
  width: 0;
  height: 0;
  border-left: 5px solid transparent;
  border-right: 5px solid transparent;
  border-top: 5px solid black;
}

.dd-button:hover {
  background-color: #eeeeee;
}

.dd-input {
  display: none;
}

.dd-menu {
  position: relative;
  top: 100%;
  border: 1px solid #ccc;
  border-radius: 4px;
  padding: 0;
  margin: 2px 0 0 0;
  box-shadow: 0 0 6px 0 rgba(0, 0, 0, 0.1);
  background-color: #ffffff;
  list-style-type: none;
  width: 375px;
}

.dd-input+.dd-menu {
  display: none;
}

.dd-input:checked+.dd-menu {
  display: block;
}

.dd-menu li {
  padding: 10px 20px;
  cursor: pointer;
  white-space: nowrap;
}

.dd-menu li:hover {
  background-color: #f6f6f6;
}

.dd-menu li a {
  display: block;
  margin: -10px -20px;
  padding: 10px 20px;
}

.dd-menu li.divider {
  padding: 0;
  border-bottom: 1px solid #cccccc;
}

<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<div class="wrapper">
  <div id="result"></div>
  <div class="dropdown" name="dropdown">
    <div class="dd-button"> Selection</div>
    <input type="checkbox" class="dd-input center-block" id="test">
    <ul id="dropdown" class="dd-menu">
      <li>plan1 </li>
      <li>plan2 </li>
      <li>plan3 </li>
      <li>Plan4 </li>
    </ul>
  </div>
</div>

Answer 2

将此添加到您的 Javascript 中。

包括id给你<h1>

$('#dropdown li').click(function() {
  $('#result').replaceWith('<h1 id="result">' + $(this).text() + '</h1>');
});

$(document).ready(function() {
  // Show hide popover
  $(".dropdown").click(function() {
    $(this).find("#dropdown").slideDown("fast");
  });
});

$(document).on("click", function(event) {
  var $trigger = $(".dropdown");
  if ($trigger !== event.target && !$trigger.has(event.target).length) {
    $("#dropdown").slideUp("fast");
  }
});

你甚至可以通过$('.dropdown').hide();隐藏dropdown

---

$('#dropdown li').click(function() {
  $('#result').replaceWith('<h1 id="result">' + $(this).text() + '</h1>');
});

$(document).ready(function() {
  // Show hide popover
  $(".dropdown").click(function() {
    $(this).find("#dropdown").slideDown("fast");
  });
});

$(document).on("click", function(event) {
  var $trigger = $(".dropdown");
  if ($trigger !== event.target && !$trigger.has(event.target).length) {
    $("#dropdown").slideUp("fast");
  }
});

.dropdown {
  display: inline-block;
  position: relative;
}

.wrapper {
  text-align: center;
  align-items: center;
  align-content: center;
  margin-left: -25%;
}

.dd-button {
  display: inline-block;
  border: 1px solid gray;
  border-radius: 4px;
  padding: 10px 30px 10px 20px;
  background-color: #ffffff;
  cursor: pointer;
  white-space: nowrap;
  width: 375px;
}

.dd-button:after {
  content: '';
  position: absolute;
  top: 50%;
  left: 90%;
  transform: translateY(-50%);
  width: 0;
  height: 0;
  border-left: 5px solid transparent;
  border-right: 5px solid transparent;
  border-top: 5px solid black;
}

.dd-button:hover {
  background-color: #eeeeee;
}

.dd-input {
  display: none;
}

.dd-menu {
  position: relative;
  top: 100%;
  border: 1px solid #ccc;
  border-radius: 4px;
  padding: 0;
  margin: 2px 0 0 0;
  box-shadow: 0 0 6px 0 rgba(0, 0, 0, 0.1);
  background-color: #ffffff;
  list-style-type: none;
  width: 375px;
}

.dd-input+.dd-menu {
  display: none;
}

.dd-input:checked+.dd-menu {
  display: block;
}

.dd-menu li {
  padding: 10px 20px;
  cursor: pointer;
  white-space: nowrap;
}

.dd-menu li:hover {
  background-color: #f6f6f6;
}

.dd-menu li a {
  display: block;
  margin: -10px -20px;
  padding: 10px 20px;
}

.dd-menu li.divider {
  padding: 0;
  border-bottom: 1px solid #cccccc;
}

<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<div class="wrapper">
  <div id="result"></div>
  <label class="dropdown" name="dropdown">
           <div class="dd-button"> Selection</div>
             <input type="checkbox" class="dd-input center-block" id="test">
                    <ul id = "dropdown"  class="dd-menu">
                         <li>plan1 </li>
                         <li>plan2 </li>
                         <li>plan3 </li>
                         <li>Plan4 </li>
                    </ul>
          </label>
</div>