在此页

• 句法
• 范例
• 规范
• 浏览器兼容性
• 另请参阅
• 相关话题

安全上下文
此特征只可用于 安全上下文 (HTTPS)，在某些或所有 支持浏览器 .

isUserVerifyingPlatformAuthenticatorAvailable() is a static method of the PublicKeyCredential interface that returns a Promise which resolves to true if a user-verifying platform authenticator is available.

A user-verifying platform authenticator is a kind of multi-factor authenticator that is part of the client device (it is generally not removable) and that involves an action from the user in order to identify them.

At the time of this writing, this method's result only resolves to true on Windows when Windows Hello capabilities are available (on recent versions of this OS).

注意： This method may only be used in top-level contexts and will not be available in an <iframe> 例如。

句法

PublicKeyCredential.isUserVerifyingPlatformAuthenticatorAvailable()
					

参数

None.

返回值

A Promise which resolves to a 布尔 indicating whether or a not a user-verifying platform authenticator is available. As of today (March 2019), this is basically indicating if Windows Hello may be used with the Web 身份验证 API and that the user has accepted its use.

注意： This is a static method which is directly called on the PublicKeyCredential interface and not on an instance.

注意： In earlier versions of the specification, the boolean also conveyed the consent of the user to disclose such an authenticator existed.

范例

PublicKeyCredential.isUserVerifyingPlatformAuthenticatorAvailable()
  .then(function(available){
    if(available){
      // We can proceed with the creation of a PublicKeyCredential
      // with this authenticator
    } else {
      // Use another kind of authenticator or a classical login/password
      // workflow
    }
  }).catch(function(err){
    // Something went wrong
    console.error(err);
  });
					

规范

规范	状态	注释
Web Authentication: An API for accessing Public Key Credentials Level 1 The definition of 'isUserVerifyingPlatformAuthenticatorAvailable' in that specification.	推荐	初始定义。

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
isUserVerifyingPlatformAuthenticatorAvailable	Chrome 67 67 65 Disabled Only supports USB U2F tokens. Disabled ). To change preferences in Chrome, visit	Edge 18	Firefox 60 60 Only supports USB U2F tokens.	IE No	Opera No	Safari 13	WebView Android 70	Chrome Android 70	Firefox Android 60 60 Only supports USB U2F tokens.	Opera Android No	Safari iOS 13.3	Samsung Internet Android No

图例

完整支持

完整支持

不支持

不支持

见实现注意事项。

用户必须明确启用此特征。

用户必须明确启用此特征。

另请参阅

• Windows Hello
• Web Authentication and Windows Hello - MSDN Guide and especially the special considerations mentioning isUserVerifyingPlatformAuthenticator()

元数据

• 最后修改： Jun 25, 2020

相关话题

1. Web 身份验证 API
2. PublicKeyCredential
3. 特性

   1. id
   2. rawId
   3. response
4. 方法

   1. getClientExtensionResults()
   2. isUserVerifyingPlatformAuthenticatorAvailable()
5. Related pages for Web Authentication API

   1. AuthenticatorAssertionResponse
   2. AuthenticatorAttestationResponse
   3. AuthenticatorResponse
   4. CredentialsContainer