autofocus
HTML Autofocus Attribute （HTML自动对焦属性）
The HTML autofocus attribute is a boolean attribute, which defines that an <input> element must automatically get focus when the page loads.
The autofocus attribute is new in HTML5. （自动对焦属性是HTML5中的新属性。）
Syntax
Syntax （语法）
<input autofocus>
| 类目 | 类目 |
|---|---|
| Applies to | HTML <input> element. |
Example of the HTML autofocus attribute:
<!DOCTYPE html>
<html>
<head>
<title>Title of the document.</title>
<body>
<h1>Example of the HTML "autofocus" attribute.</h1>
<form action="#">
Name: <input type="text" name="fname" autofocus><br>
Surname: <input type="text" name="lname"><br>
<input type="submit">
</form>
</body>
</html>