Performance.timeOrigin

Experimental

这是一个实验中的功能
此功能某些浏览器尚在开发中,请参考浏览器兼容性表格以得到在不同浏览器中适合使用的前缀。由于该功能对应的标准文档可能被重新修订,所以在未来版本的浏览器中该功能的语法和行为可能随之改变。

接口 Performance 的只读属性  timeOrigin 返回一个表示 the performance measurement 开始时间的高精度 timestamp

语法

var timeOrigin = performance.timeOrigin

高精度 timestamp,例如 1518354643295.86

Specifications

Specification Status Comment
High Resolution Time Level 3
timeOrigin
Editor's Draft Initial definition.

Browser Compatibility

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! (en-US)
Feature Chrome Firefox (Gecko) Internet Explorer Opera Safari (WebKit)
Basic support 62 59 (59) ? 49 ?
Feature Android Webview Chrome for Android Firefox Mobile (Gecko) IE Mobile Opera Mobile Safari Mobile
Basic support 62 62 59.0 (59) ? 49 ?只读属性  timeOrigin timestampperformance.timeOrigin