HTMLKeygenElement

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弃用
This feature is no longer recommended. Though some browsers might still support it, it may have already been removed from the relevant web standards, may be in the process of being dropped, or may only be kept for compatibility purposes. Avoid using it, and update existing code if possible; see the 兼容性表格 at the bottom of this page to guide your decision. Be aware that this feature may cease to work at any time.

注意： This page describes the Keygen Element interface as specified, not as currently implemented by Gecko. See bug 101019 for details and status.

<keygen> elements expose the HTMLKeygenElement interface, which provides special properties and methods (beyond the regular element object interface they also have available to them by inheritance) for manipulating the layout and presentation of keygen 元素。

特性

autofocus: 是 布尔 that reflects the autofocus HTML attribute, indicating that the form control should have input focus when the page loads.
challenge: 是 DOMString that reflects the challenge HTML attribute, containing a challenge string that is packaged with the submitted key.
form 只读: 是 HTMLFormElement that indicates the control's form owner, reflecting the form HTML attribute if it is defined.
keytype: 是 DOMString that reflects the keytype HTML attribute, containing the type of key used.
labels 只读 Unimplemented (see bug 556743 ): 是 NodeList that represents a list of label elements associated with this keygen element.
名称: 是 DOMString that reflects the 名称 HTML attribute, containing the name for the control that is submitted with form data.
type 只读: 是 DOMString that must be the value keygen .
validationMessage 只读: 是 DOMString representing a localized message that describes the validation constraints that the control does not satisfy (if any). This is the empty string if the control is not a candidate for constraint validation ( willValidate is false), or it satisfies its constraints.
validity 只读: 是 ValidityState representing the validity states that this element is in.
willValidate: 是 布尔 that is always false because keygen objects are never candidates for constraint validation.

方法

Name & Arguments	返回	描述
`checkValidity()`	`布尔`	Always returns true because `keygen` objects are never candidates for constraint validation.
`setCustomValidity(in DOMString error)`	`void`	Sets a custom validity message for the element. If this message is not the empty string, then the element is suffering from a custom validity error, and does not validate.

浏览器兼容性

The compatibility table on this page is generated from structured data. If you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. 更新 GitHub 上的兼容性数据

	桌面						移动
	Chrome	Edge	Firefox	Internet Explorer	Opera	Safari	Android webview	Chrome for Android	Firefox for Android	Opera for Android	Safari on iOS	Samsung Internet
`HTMLKeygenElement` 弃用非标	Chrome ? — 57 不支持 ? — 57 见 Chrome Platform Status .	Edge ?	Firefox 1 — 69	IE ?	Opera No	Safari ?	WebView Android ? — 57 不支持 ? — 57 见 Chrome Platform Status .	Chrome Android ? — 57 不支持 ? — 57 见 Chrome Platform Status .	Firefox Android 部分支持 4 部分支持 4 Never fully implemented. See bug 1315460 .	Opera Android No	Safari iOS ?	Samsung Internet Android ? — 7.0

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部分支持
不支持
兼容性未知 ?
非标。预期跨浏览器支持较差。
弃用。不要用于新网站。

元数据

最后修改： May 27, 2020

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