NavigatorID.appVersion

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Returns either " 4.0 " or a string representing version information about the browser.

注意： Do not rely on this property to return the correct browser version.

句法

window.navigator.appVersion

值

Either " 4.0 " or a string representing version information about the browser.

范例

alert('Your browser version is reported as ' + navigator.appVersion);

注意事项

window.navigator.userAgent property may also contain the version number (for example " Mozilla/5.0 (Windows; U; Win98; en-US; rv:0.9.2) Gecko/20010725 Netscape 6/6.1 "), but you should be aware of how easy it is to change the user agent string and "spoof" other browsers, platforms, or user agents, and also how cavalier the browser vendor themselves are with these properties.

window.navigator.appVersion , window.navigator.appName and window.navigator.userAgent properties have been used in "browser sniffing" code: scripts that attempt to find out what kind of browser you are using and adjust pages accordingly. This lead to the current situation, where browsers had to return fake values from these properties in order not to be locked out of some websites.

规范

规范	状态	注释
HTML 实时标准 The definition of 'NavigatorID.appVersion' in that specification.	实时标准	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
`appVersion`	Chrome Yes	Edge 12	Firefox Yes	IE Yes	Opera Yes	Safari Yes	WebView Android Yes	Chrome Android Yes	Firefox Android Yes	Opera Android Yes	Safari iOS Yes	Samsung Internet Android Yes

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完整支持

元数据

最后修改： 2019 年 3 月 23 日

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值

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注意事项

规范

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图例

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