在此页

• 句法
• 范例
• 规范
• 浏览器兼容性
• 相关话题

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。

IntersectionObserverEntry interface's read-only time 特性为 DOMHighResTimeStamp that indicates the time at which the intersection change occurred relative to the time at which the document was created.

句法

var time = IntersectionObserverEntry.time;
					

值

A DOMHighResTimeStamp which indicates the time at which the target element experienced the intersection change described by the IntersectionObserverEntry . The time is specified in milliseconds since the creation of the containing document.

范例

见 Timing element visibility with the Intersection Observer API for a complete example which uses the time property to track how long elements are visible to the user.

规范

规范	状态	注释
Intersection Observer The definition of 'IntersectionObserverEntry.time' in that specification.	工作草案	初始定义

浏览器兼容性

The compatibility table in 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
time	Chrome 51	Edge 15	Firefox 55 55 不支持 53 — 55 Disabled Disabled ). To change preferences in Firefox, visit	IE No	Opera Yes	Safari ?	WebView Android 51	Chrome Android 51	Firefox Android ?	Opera Android ?	Safari iOS ?	Samsung Internet Android 5.0

图例

完整支持

完整支持

不支持

不支持

兼容性未知 ?

兼容性未知

实验。期望将来行为有所改变。

实验。期望将来行为有所改变。

用户必须明确启用此特征。

用户必须明确启用此特征。

元数据

• 最后修改： 2019 年 3 月 23 日

相关话题

1. 交集观测器 API
2. IntersectionObserverEntry
3. 特性

   1. boundingClientRect
   2. intersectionRatio
   3. intersectionRect
   4. isIntersecting
   5. rootBounds
   6. target
   7. time
4. Related pages for Intersection Observer API

   1. IntersectionObserver