PresentationAvailability

在此页

这是实验性技术
检查浏览器兼容性表格要小心谨慎在生产中使用这之前。

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 .

A PresentationAvailability object is associated with available presentation displays and represents the presentation display availability for a presentation request. If the controlling user agent can monitor the list of available presentation displays in the background (without a pending request to start() )， PresentationAvailability 对象 MUST be implemented in a controlling browsing context .

value 属性 MUST return the last value it was set to. The value is updated by the monitor the list of available presentation displays 算法。

onchange attribute is an event handler whose corresponding event handler event type is change .

PresentationAvailability.value 只读: A boolean value indicating whether the given presentation display is available. The value 属性 MUST return the last value it was set to.

None.

规范	状态	注释
Presentation API The definition of 'PresentationAvailability interface' in that specification.	候选推荐	初始定义。

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