使用aria-label時應(yīng)明確元素功能，適用於無可見文本但具交互意義的元素，如圖標按鈕、符號鏈接等；編寫時需清晰描述功能，避免冗餘或模糊表述；常見錯誤包括標籤過於籠統(tǒng)、未隨功能更新及在已有文本元素上重複使用；替代方案有aria-labelledby、title屬性和視覺隱藏文本。正確應(yīng)用可提升屏幕閱讀器用戶的網(wǎng)頁體驗。

當你're trying to make a website accessible, one of the small but powerful tools you can use is aria-label . It helps screen readers understand what something does when there's no visible text. Here's how and when to use it effectively.

When to Use aria-label

You should use aria-label when an element doesn't have visible text but still has an action or meaning — like buttons with only icons inside, links that are just symbols, or form fields without labels next to them.

For example:

• A search button with just a magnifying glass icon
• A close button with an "×"
• An input field where the label is visually hidden but needed for screen readers

In these cases, aria-label gives context so screen reader users know what each element does.

How to Write a Good aria-label

The key is clarity. The label should describe exactly what the element does in simple terms. Don't be vague or too technical.

Examples:

• ? aria-label="Close navigation menu"
• ? aria-label="Click to close"

Also, avoid repeating the element type unless it adds value. For instance, if it's already a button, you don't need to say “button” again in the label.

Common Mistakes to Avoid

A few things to watch out for:

• Using overly generic labels like “Click here” or “More”
• Forgetting to update the label when the function changes
• Applying aria-label to elements that already have clear visible text (it's redundant)

Also, don't use it on empty elements unless they're interactive. If a div is acting like a button, maybe consider using a real <button></button> instead — it's more reliable and semantic.

Alternatives You Might Prefer

Sometimes aria-label isn't the best choice. In some cases, you might want to use:

• aria-labelledby – when you already have a visible label or title nearby that can be referenced
• title attribute – though less consistent across screen readers
• Visually hidden text – if you want to keep the label visible to screen readers but not on screen

Each has its place. Pick what fits your layout and accessibility needs best.

基本上就這些.

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