PerformanceTiming.navigationStart - Web API 接口参考 编辑

概要

PerformanceTiming.navigationStart 是一个返回代表一个时刻的 unsigned long long 型只读属性，为紧接着在相同的浏览环境下卸载前一个文档结束之时的 Unix毫秒时间戳。如果没有上一个文档，则它的值相当于 PerformanceTiming.fetchStart。

语法

time = performanceTiming.navigationStart;

标准

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

浏览器兼容性

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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.

参见

• 它属于 PerformanceTiming 接口。