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。