使用方向键在选项卡之间导航
让用户用键盘移动选项卡。
使用方向键在选项卡之间导航 是 CoddyKit 上的免费 Web Accessibility Academy 课时。 这是第 2 节课，共 4 节。 你可以在下方免费阅读本课时的完整内容 — 然后在浏览器中使用内置代码编辑器和全天候 AI 导师进行实践。 这是 Web Accessibility Academy 学习路径的一部分，你的进度在网页和 CoddyKit 应用中同步。 Web Accessibility Academy 课程共包含 4 节课。
本课时的部分内容尚未翻译，以英文显示。
Tabs Are Not Just Clickable
A correct tab set is driven by the keyboard, not the mouse alone. The APG pattern expects arrow keys to move between tabs.
The Tablist Is One Tab Stop
Pressing Tab should land on the tab set just once, not stop on every tab. The whole tablist behaves as a single stop in the page order.
Only One Tab Is Tabbable
Give the active tab tabindex="0" and every other tab tabindex="-1". This is the roving tabindex that keeps Tab from hitting them all.
<button role="tab" tabindex="0">Profile</button>Arrow Keys Move Focus
Inside a horizontal tablist, Right and Left arrows move focus from tab to tab. This is how keyboard users explore the set.
Up and Down for Vertical Tabs
If your tabs stack vertically, use Up and Down arrows instead. Set aria-orientation="vertical" so assistive tech knows the layout.
<div role="tablist" aria-orientation="vertical">...</div>Wrap Around at the Ends
When focus is on the last tab and the user presses the next arrow, wrap back to the first. Looping keeps navigation smooth and predictable.
Home and End Jump Far
Add two shortcuts: Home moves focus to the first tab and End moves it to the last. Long tab sets become much faster to navigate.
Move the Roving Index
When an arrow shifts focus, update the tabindex: set the newly focused tab to 0 and the old one to -1, then call focus on it.
newTab.tabIndex = 0; oldTab.tabIndex = -1; newTab.focus();Automatic Activation
With automatic activation, focusing a tab also selects it and shows its panel. It feels instant but can be heavy if panels are costly.
Manual Activation
With manual activation, arrows only move focus; the user presses Enter or Space to select. Prefer this when revealing a panel is expensive.
Why This Matters
Without arrow support, keyboard users must Tab through every tab and panel. Proper key handling makes the widget efficient, not just reachable.
Quick Check
Focus is on a tab in a horizontal tablist. The user presses the Right arrow. What should happen?
Recap: Arrow Navigation
You learned tabs use a roving tabindex with arrow keys, plus Home and End. Choose automatic or manual activation based on panel cost.
常见问题解答
「使用方向键在选项卡之间导航」课时是免费的吗？
是的 — 「使用方向键在选项卡之间导航」的完整文本可在网页上免费阅读。要进行交互式练习（内置代码编辑器和全天候 AI 导师）并解锁 Web Accessibility Academy 课程的其余内容，请升级到 CoddyKit PRO。 Web Accessibility Academy 课程共包含 4 节课。
「使用方向键在选项卡之间导航」这节课中我会学到什么？
让用户用键盘移动选项卡。 你通过在浏览器中直接运行的动手代码来练习 Web Accessibility Academy，全天候 AI 导师会在你学习这节课的过程中回答你的问题。
学习 Web Accessibility Academy 需要有经验吗？
无需任何先前经验。CoddyKit 上的 Web Accessibility Academy 课程适合初学者到高级学习者，你可以从这里开始或从头开始，按照自己的节奏学习。 这是第 2 节课，共 4 节。
「使用方向键在选项卡之间导航」课时需要多长时间？
大多数 CoddyKit 课程大约需要 5–10 分钟。每节课都很精短且互动，所以你能稳步进步，并在网页和应用中从离开的地方继续。
我能在这节 Web Accessibility Academy 课中编写并运行代码吗？
能。每节 Web Accessibility Academy 课都包含内置代码编辑器，你可以在浏览器中直接编写并运行真实代码，并获得即时 AI 反馈 — 无需本地设置。