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  1. HTML attribute: placeholder - HTML: HyperText M...

    The placeholder attribute defines the text displayed in a form control when the control has no value. The placeholder text should provide a brief hint to the user as to the expected type of data that should be entered into the control....selector Help improve MDN Was this page helpful to you? Yes No Learn...Learn how to contribute . This page was last modified on Aug 6, 2024...

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  2. 瀏覽器擴充功能 - Mozilla | MDN

    擴充功能（extension）可以擴展和修改瀏覽器的功能。Firefox 的擴充功能是使用 WebExtension API 建立而成，這是一個開發跨瀏覽器擴充功能的系統。這個系統的大部分相容於 Google Chrome 和 Opera 的 擴充功能 API 與 W3C Draft Community Group。這些瀏覽器的擴充功能在大多數的情況下，只需要一點改變就可以在 Firefox 或 Microsoft Edge 中執行。這個 API 也和多處理程序的 Firefox 完全相容。...作者 Help improve MDN Was this page helpful to you? Yes No Learn...Learn how to contribute . This page was last modified on 2024年12月13日...

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  3. <object>: The External Object element - HTML: H...

    The HTML element represents an external resource, which can be treated as an image, a nested browsing context, or a resource to be handled by a plugin....<param> Help improve MDN Was this page helpful to you? Yes No Learn...Learn how to contribute . This page was last modified on Nov 11,...
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  4. SyntaxError: functions cannot be labelled - Jav...

    The JavaScript exception "functions cannot be labelled" occurs when a function declaration has a label before it....features Help improve MDN Was this page helpful to you? Yes No Learn...Learn how to contribute . This page was last modified on Jul 10,...

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  5. aria-errormessage - Accessibility | MDN

    The aria-errormessage attribute on an object identifies the element that provides an error message for that object....aria-live Help improve MDN Was this page helpful to you? Yes No Learn...Learn how to contribute . This page was last modified on Jul 5, 2024...

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  6. DocumentFragment - Web APIs | MDN

    Learn about the DocumentFragment interface, including its constructor, properties, and methods, specifications and browser compatibility....browser Help improve MDN Was this page helpful to you? Yes No Learn...Learn how to contribute . This page was last modified on Jul 12,...

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  7. <progress>：进度指示元素 - HTML（超文本标记语言） | MDN

    HTML中的 元素用来显示一项任务的完成进度。虽然规范中没有规定该元素具体如何显示，浏览器开发商可以自己决定，但通常情况下，该元素都显示为一个进度条形式。...t Help improve MDN Was this page helpful to you? Yes No Learn...Learn how to contribute . This page was last modified on 2024年12月13日...

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  8. offset-anchor - CSS: Cascading Style Sheets | MDN

    The offset-anchor CSS property specifies the point inside the box of an element traveling along an offset-path that is actually moving along the path....background-position reference pages. Note that the 3-value position...<path> Help improve MDN Was this page helpful to you? Yes No Learn...

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  9. ARIA: presentation role - Accessibility | MDN

    The presentation role and its synonym none remove an element's implicit ARIA semantics from being exposed to the accessibility tree....O'Hara Help improve MDN Was this page helpful to you? Yes No Learn...Learn how to contribute . This page was last modified on Aug 13,...

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  10. <mark> - HTML（超文本标记语言） | MDN

    HTML 标记文本元素 (< Mark >) 表示为引用或符号目的而标记或突出显示的文本，这是由于标记的段落在封闭上下文中的相关性或重要性造成的。... Help improve MDN Was this page helpful to you? Yes No Learn...Learn how to contribute . This page was last modified on 2024年12月13日...

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