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HTML DOM Input Number autofocus attribute

Input Number Object Reference Input Number Object

Examples

Check number field is automatically get the focus when the page is loaded:

var x = document.getElementById("myNumber").autofocus;
x The output is:
true

try it"

Definition and Usage

autofocus property sets or returns the number field is automatically get the focus when the page loads.

This property reflects the HTML autofocus property.

Browser Support

Internet ExplorerFirefoxOperaGoogle ChromeSafari

All major browsers support the autofocus attribute.

Note: Internet Explorer 9 and earlier versions of IE, Opera 12 and earlier version of Opera browser does not support this property.

Note: Internet Explorer 9 and earlier versions of IE do not support the use of type = "number" <input> element attributes.

grammar

Back autofocus properties:

numberObject .autofocus

Setting autofocus properties:

numberObject .autofocus=true|false

Property Value

值 描述
true|false 描述了 number 字段在页面加载后是否获取焦点
  • true - number 字段获取焦点
  • false - 默认。number 字段不获取焦点

technical details

return value: Boolean value that, if the page number field is automatically get the focus after loading returns true, otherwise returns false.

Related Pages

HTML Reference Manual: HTML <the INPUT> The autofocus attribute

Input Number Object Reference Input Number Object