Question

我尝试使用Materialize在侧边栏中创建一个下拉菜单，但它不起作用。下拉列表的宽度与触发器的宽度不同，并且填充将锚点移动到列表项的底部。（代码与docs网站相同）

以下是Codepen的问题：example

感谢您的帮助：）

＆＃13;

$(document).ready(function(){
      
      // Sidebar
      $(".button-collapse").sideNav({menuWidth: 320, activationWidth: 70, edge: 'left'});
      // Dropdown
      $('.dropdown-button').dropdown({
           inDuration: 300,
           outDuration: 225,
           constrain_width: false, // Does not change width of dropdown to that of the activator
           hover: false, // Activate on hover
           gutter: 0, // Spacing from edge
           belowOrigin: false // Displays dropdown below the button
           }
      );
    });

＆＃13;

<div id="slide-out" class="side-nav full">
  <ul>
      <li><a href="#">First Link</span></a></li>
      <li><a href="#">Second Link</span></a></li>
      <!-- Dropdown Trigger -->
      <li><a class='dropdown-button' href='#' data-activates='dropdown1'>Drop Me!</a></li>
  </ul>
</div>

<ul id='dropdown1' class='dropdown-content'>
    <li><a href="#!">one</a></li>
    <li><a href="#!">two</a></li>
    <li class="divider"></li>
    <li><a href="#!">three</a></li>
</ul>

<div class="row">
  <a href="#" data-activates="slide-out" class="button-collapse"><i class="mdi-navigation-menu medium black-text left"></i></a>
</div>

＆＃13;

Answer 1

对于有类似问题的人：我遇到了类似的问题，因为我使用的是jQuery 3.x beta。切换到2.2.2，现在很好。似乎是动画机制的一些变化。

希望这有助于某人。

Answer 2

您可以设置location.hash或只是初始化下拉列表而不传递任何json对象。

constraint_width = true

或者您可以使用默认值初始化下拉列表（顺便提一下，上面提供的json对象是默认的下拉值）。

$('.dropdown-button').dropdown({
           inDuration: 300,
           outDuration: 225,
           constrain_width: true, 
           hover: false, 
           gutter: 0, 
           belowOrigin: false 
           }
      );

Answer 3

如果您在项目中使用bootstrap，请在您网站上的 bootstrap.js之后绑定materialize.js 。这对我有用

Answer 4

面对相同的情况后，我找到了使用另一个Jquery方法的解决方案：

$(".dropdown-trigger").dropdown();

<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/materialize/1.0.0-beta/css/materialize.min.css">
<script src="https://cdnjs.cloudflare.com/ajax/libs/materialize/1.0.0-beta/js/materialize.min.js"></script>

<ul id="dropdown1" class="dropdown-content">
  <li><a href="#!">one</a></li>
  <li><a href="#!">two</a></li>
  <li class="divider"></li>
  <li><a href="#!">three</a></li>
</ul>
<nav>
  <div class="nav-wrapper">
   
    <ul class="left ">
      <!-- Dropdown Trigger -->
      <li><a class="dropdown-trigger" href="#!" data-target="dropdown1">Dropdown</a></li>
    </ul>
  </div>
</nav>

source of solution

Answer 5

在我的项目中，由于bootstrap.js发生了此错误。只需删除它的引用，它将正常工作..

Answer 6

<!-- Kindly be well advised there is nothing wrong with the code provided with regard to the subject.

但是，存在轻微的HTML标签（“ span标签”）使用违规和缺少标签的情况。此外，CDN源标签链接必须按时间顺序排列，请参见下文。我认为这是您的复制/粘贴。 :)不过，请始终保持代码整洁，整洁，格式正确，并遵守HTML“使用正确的文档类型”编码约定。始终将文档类型声明为文档的第一行：->

<!DOCTYPE html>
<html lang="en-US">

<!--

声明语言对于可访问性应用程序（屏幕阅读器）和搜索引擎很重要。但是，我们不建议省略html标签和body标签。省略html标签或正文标签可能会使DOM和XML软件崩溃。省略body标签也会在较旧的浏览器（IE9）中产生错误。

在HTML5中，可以省略head标签。默认情况下，浏览器会将body标签之前的所有元素添加到默认的head标签元素中。您可以通过省略head标签来降低HTML的复杂性：

导航链接集位于正文标记之前：->

<!--Let browser know website is optimized for mobile-->
<meta name="viewport" content="width=device-width, initial-scale=1.0"/>

<!--Import Google Icon Font-->
<link href="https://fonts.googleapis.com/icon?family=Material+Icons" rel="stylesheet">
<link href="https://google.github.io/material-design-icons/">

<!--Import Boostrap Icon Font-->
<link rel="stylesheet" href="https://cdn.materialdesignicons.com/1.1.34/css/materialdesignicons.min.css"> 

<!--Import materialize.css-->
<link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/materialize/1.0.0-beta/css/materialize.min.css">
<title>Materialize Dropdown List </title>

<body>
<!-- Page Content goes here, <div> tags, <ul> tags, <li> tags and <main> tags which specify the main content of a document-->

<!-- Slide-Out Structure -->
<ul id="slide-out" class="sidenav">
<li>
<div class="user-view">
    <div class="background">
        <i class="mdi mdi-office small"></i>
    </div>
        <a href="#user"><img class="circle" src="https://www.directlink.coop/img/icons/avatars/145841-avatar-set/png/boy-1.png"></a>
        <a href="#name"><span class="black-text name">HappyCoder</span></a>
        <a href="#email"><span class="black-text email">HC@gmail.com</span></a>
</div>
</li>
    <li><a href="#!"><i class="material-icons">cloud</i>MyCloud data vault</a></li>
    <!-- Dropdown Trigger -->
    <li><a href='#' data-target='dropdown1' class='dropdown-trigger'>Drop Me!</a></li>
    <li><div class="divider"></div></li>
    <li><a class="subheader">Admin</a></li>
    <li><a class="waves-effect" href="#!">Bitcoin Expenses</a></li>
</ul>

<!-- Dropdown Structure -->
<ul id='dropdown1' class='dropdown-content'>
    <li><a href="#!">one</a></li>
    <li><a href="#!">two</a></li>
    <li class="divider"></li>
    <li><a href="#!">If this has helped you in any way, you know what to do.</a></li>
</ul>
<!-- Slide-Out Trigger -->
<div class="row">
<a href="#" data-target="slide-out" class="sidenav-trigger"><i class="mdi mdi-menu medium black-text left"></i></a>
</div>

<!--Main layout-->
<main>
</main>

<!-- Optional JavaScript -->
<!-- Arrange the jQuery first, then Bootstrap JS, and then the materialize JS chronologically using latest versions -->
<script src="https://code.jquery.com/jquery-3.3.1.js" integrity="sha256-2Kok7MbOyxpgUVvAk/HJ2jigOSYS2auK4Pfzbm7uH60=" crossorigin="anonymous"></script>
<script src="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0/js/bootstrap.min.js" integrity="sha384-JZR6Spejh4U02d8jOt6vLEHfe/JQGiRRSQQxSfFWpi1MquVdAyjUar5+76PVCmYl" crossorigin="anonymous"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/materialize/1.0.0-beta/js/materialize.min.js"></script>

<!-- The traditional method of initializing JQuery, compatible with most browser -->
<script>
$(document).ready(function(){
    //Sidebar
  $('.sidenav').sidenav({menuWidth: 320, inDuration: 700, outDuration: 225, activationWidth: 70, edge: 'right'});
    // Dropdown
        $('.dropdown-trigger').dropdown({
           inDuration: 300,
           outDuration: 225,
           constrain_width: false, // Does not change width of dropdown to that of the activator
           hover: false, // Activate on hover
           gutter: 0, // Spacing from edge
           belowOrigin: false // Displays dropdown below the button
        });
  });
</script>
</body>
</hmtl>
        <!-- Close All HTML Elements 
        **BAD**: </span>
        **Good**: <span>/span> -->

Answer 7

使用此代码它会起作用

    document.addEventListener('DOMContentLoaded', function() {
    var elems = document.querySelectorAll('.collapsible');
    var instances = M.Collapsible.init(elems, options);
  });

  // Or with jQuery

  $(document).ready(function(){
    $('.collapsible').collapsible();
  });

物化下拉列表不起作用

7 个答案: