在此页

• 句法
• 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 .

PositionOptions.maximumAge property is a positive long value indicating the maximum age in milliseconds of a possible cached position that is acceptable to return. If set to 0 , it means that the device cannot use a cached position and must attempt to retrieve the real current position. If set to Infinity the device must return a cached position regardless of its age.

句法

positionOptions.maximumAge = timeLength
					

规范

规范	状态	注释
地理位置 API The definition of 'PositionOptions.maximumAge' 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
maximumAge	Chrome 5	Edge 12	Firefox 3.5	IE 9	Opera 16 16 不支持 10 — 15	Safari 5	WebView Android Yes	Chrome Android 18	Firefox Android 4	Opera Android 16 16 不支持 10.1 — 14	Safari iOS Yes	Samsung Internet Android 1.0

图例

完整支持

完整支持

另请参阅

• Using geolocation
• PositionOptions interface it belongs to.

元数据

• 最后修改： 2020 年 1 月 22 日

相关话题

1. 地理位置 API
2. PositionOptions
3. 特性

   1. enableHighAccuracy
   2. maximumAge
   3. timeout
4. Related pages for Geolocation API

   1. Geolocation
   2. GeolocationCoordinates
   3. GeolocationPosition
   4. GeolocationPositionError
   5. Navigator.geolocation