PerformanceTiming.navigationStart
Deprecated
Avoid using this feature in new projects.
This feature is supserseded by the PerformanceNavigationTiming API.
This feature may be a candidate for removal from web standards or browsers.
Consider using the following features instead: Performance或Navigation timing.
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;
规范
因为 Navigation Timing 规范已被弃用，此特性不再有望成为标准。请使用 PerformanceNavigationTiming 接口代替。
浏览器兼容性
参见
- 它属于
PerformanceTiming接口。