In this lesson, we are going to use aria-current to give a screen reader user more context about what the current page is. Historically, many developers use an.activeclass to indicate that the page in a menu is the same that you're on. Instead of using a class, we are going to use...
ariaCurrent: null | string 屬性值 null | string 繼承自 HTMLElement.ariaCurrentariaDisabled TypeScript 複製 ariaDisabled: null | string 屬性值 null | string 繼承自 HTMLElement.ariaDisabledariaExpanded TypeScript 複製 ariaExpanded: null | string 屬性值 null | string 繼承自 HTMLElement.aria...
aria-current true all aria-describedat true all aria-describedby true all aria-disabled true all aria-dropeffect true all aria-errormessage true all aria-expanded true all aria-flowto true all aria-grabbed true all aria-haspopup true all aria-hidden true all aria-invalid true ...
通过添加以下 HTML 标记,可以使用 bootstrap 轻松构建排列良好的导航栏: <navclass="navbar navbar-expand-lg navbar-light bg-light"><aclass="navbar-brand"href="#">Navbar</a><buttonclass=" navbar -toggler"type=“按钮”数据切换=“折叠”数据目标=“#navbarSupportedContent”aria-controls=“navbar...
ARIA uses a set of roles, states and properties to expose a Web page to the accessibility APIs. These roles, states and properties are assigned on a page’s elements, which are exposed to the ATs. Most current AT tools—including JAWS, NVDA and VoiceOver—support ARIA. Let’s take a ...
The end tag may be omitted if the<html>element is not immediately followed by a comment. Permitted parentsNone. This is the root element of a document. Implicit ARIA roledocument Permitted ARIA rolesNorolepermitted DOM interfaceHTMLHtmlElement ...
<a class="nav-link active" aria-current="page" href="tab1.html">Active</a> </li> <li class="nav-item dropdown"> <a class="nav-link dropdown-toggle" data-bs-toggle="dropdown" href="" role="button" aria-expanded="false">Dropdown</a> ...
<navclass="navbar navbar-expand-lg navbar-light bg-light"><arel="nofollow"class="navbar-brand"href="#">Logo</a><buttonclass="navbar-toggler"type="button"data-toggle="collapse"data-target="#navbarNav"aria-controls="navbarNav"aria-expanded="false"aria-label="Toggle navigation"><spancla...
Web Standards Update for Microsoft Visual Studio 2010 SP1 –this is a Visual Studio extension that adds updated HTML5 and CSS3 IntelliSense and validation to Visual Studio 2010 SP1, based on the current W3C specification. WebMatrix –HTML5 is supported by default out of the box (adding a new...
aria-live has three value: 1. off: nothing will happen 2. polite: wait user finish current action, then tell user, cover most use cases. 3. assertive: interpute whatever users are current doing. <formaction=""><spanclass="label"id="currValue">Current value</span><spanaria-describedby=...