// 初始化下拉菜单vardropdownElementList = [].slice.call(document.querySelectorAll('.dropdown-toggle'))vardropdownList = dropdownElementList.map(function(dropdownToggleEl) {returnnewbootstrap.Dropdown(dropdownToggleEl) })// 事件监听document.querySelector('.dropdown-menu').addEventListener('click'...
<divclass="dropdown"style="display: inline-block;margin-left: 60px;"><buttonclass="btn btn-default dropdown-toggle"type="button"id="dropdownMenu1"data-toggle="dropdown"aria-haspopup="true"aria-expanded="true">Dropdown<spanclass="caret"></span></button><ulclass="dropdown-menu dropdown-...
Bootstrap dropdown是一个常用的前端组件,用于创建下拉菜单。当用户点击页面其他区域时,通常会自动关闭下拉菜单。然而,有时候我们希望在主体区域点击时不关闭下拉菜单,只有在点击下拉菜单本身或其他特定元素时才关闭。 要实现这个功能,可以使用事件委托和事件冒泡的原理。具体步骤如下: ...
querySelectorAll('.dropdown-toggle')) var dropdownList = dropdownElementList.map(function (dropdownToggleEl) { return new bootstrap.Dropdown(dropdownToggleEl) }) data-bs-toggle="dropdown" 仍然时必须的 不管您是通过JavaScript调用dropdown还是使用dataapi, data-bs-toggle="dropdown" 始终需要出现...
1、下拉菜单实例 将下拉菜单触发器和下拉菜单都包裹在 .dropdown 里,或者另一个声明了 position: relative; 的元素。...然后加入组成菜单的 HTML 代码; 要想实现交互效果,需要用到下拉菜单的 JavaScript 插件; 代码演示: 下拉菜单的父元素设置 .dropup 类,可以让菜单向上弹出(默认是向下弹出的); 代码...
bootstrap实现下拉框dropdown选中select option 美爆了,bootstrap官网的例子有点坑,它只给你下拉,并且美化了,但你点击下拉却不能选择,这个坎就已经让一大堆人不想用它下拉框了,但原生的下拉框在每个浏览器长的的不一样,尤其是在ie太丑,好了废话不多说直接上代码
document.querySelectorAll('.dropdown .dropdown-toggle').forEach((a) => { let dropdown: bootstrap.Dropdown; a.addEventListener('click', (e) => { const show = a.classList.contains('show'); if (show) { a.classList.remove('show'); dropdown.hide(); } else { a.setAttribute('data...
drop-down-list resetting on postback Dropdown (select element) With Multi-line Options? dropdown list default value set to null dropdown list error - Object reference not set to an instance of an object. DropDown List Selection to Populate TextBox dropdown list with checkbox c# .net Dropdo...
adding a helpful search box on the high point of the dropdown-- this way in the event of a really large selection of alternatives the site visitor can conveniently narrow the list down by just typing a handful of letters of the name of the desired one-- the list instantly becomes ...
<div class="dropdown"> <button class="btn btn-primary dropdown-toggle" type="button" data-bs-toggle="dropdown" aria-expanded="false"> Dropdown </button> <ul class="dropdown-menu"> <li><button class="dropdown-item" type="button">Dropdown item</button></li> <li><button class="...