Window.opener | Web API

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Window 接口的 opener property returns a reference to the window that opened the window, either with open() , or by navigating a link with a target 属性。

In other words, if window A opens window B , B.opener 返回 A .

句法

const openerWindow = window.opener

值

A Window -like object referring to the window that opened the current window (using window.open() , or by a link with target attribute set). If this window was not opened by being linked to or created by another, returns null .

If the opener is not on the same origin as the current page, functionality of the opener object is limited. For example, variables and functions on the window object are not accessible. However, navigation of the opener window is possible, which means that the opened page can open an URL in the original tab or window. In some cases, this makes phishing attacks possible, where a trusted page that is opened in the original window is replaced by a phishing page by the newly opened page.

In the following cases, the browser does not populate window.opener , but leaves it null :

The opener can be omitted by specifying target =noopener on a link, or passing noopener 在 windowFeatures 参数。
From Firefox 79, windows opened because of links with a target of _blank don't get an opener , unless explicitly requested with rel =opener .
Having a Cross-Origin-Opener-Policy header with a value of same-origin prevents setting opener . Since the new window is loaded in a different browsing context, it won't have a reference to the opening window.

规范

规范	状态	注释
HTML 实时标准 The definition of 'window.opener' in that specification.	实时标准

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
`opener`	Chrome 1	Edge 12	Firefox 1	IE No	Opera 3	Safari 1	WebView Android 1	Chrome Android 18	Firefox Android 4	Opera Android 10.1	Safari iOS 1	Samsung Internet Android 1.0

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完整支持
不支持

元数据

最后修改： Aug 31, 2020

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