PerformanceTiming.fetchStart

概要

PerformanceTiming.fetchStart 是一个返回代表一个时刻的 unsigned long long 型只读属性,为浏览器已经准备好去使用HTTP请求抓取文档之时的 Unix毫秒时间戳。这一时刻在检查应用的缓存之前。

语法

time = performanceTiming.fetchStart;

标准

Specification Status Comment
Navigation Timing
PerformanceTiming.fetchStart
Recommendation Initial definition.

浏览器兼容性

We're converting our compatibility data into a machine-readable JSON format. This compatibility table still uses the old format, because we haven't yet converted the data it contains. Find out how you can help!

Feature Chrome Edge Firefox (Gecko) Internet Explorer Opera Safari (WebKit)
Basic support 6.0 (Yes) 7.0 (7.0) 9.0 15.0 未实现
Feature Android Edge Firefox Mobile (Gecko) Firefox OS IE Phone Opera Mobile Safari Mobile
Basic support 未实现 (Yes) 7.0 (7.0) 1.0 (7.0) 9.0 15.0 未实现

参见

文档标签和贡献者

此页面的贡献者: micblo
最后编辑者: micblo,