HTML <button> autofocusAttribute

HTML button 标签参考手册HTML <button> Tag

Example

A button using the autofocus attribute:

<button type="button" autofocus>Click me!</button>

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Browser Support

Internet ExplorerFirefoxOperaGoogle ChromeSafari

Internet Explorer 10, Firefox, Chrome, and Safari support the autofocus attribute.

Note:Internet Explorer 9 and earlier IE versions do not support the autofocus attribute.

Definition and Usage

The autofocus attribute is a boolean attribute.

The autofocus attribute specifies that a button should automatically get focus when the page loads.

Differences between HTML 4.01 and HTML5

The autofocus attribute is new in HTML5 for the <button> tag.

Differences between HTML and XHTML

In XHTML, attribute minimization is not allowed, and the autofocus attribute must be defined as <button autofocus="autofocus">.

Syntax

<button type="button" autofocus>

HTML button 标签参考手册HTML <button> Tag Other Extensions