概要
PerformanceTiming.domainLookupStart 是一个返回代表一个时刻的 unsigned long long 型只读属性，为域名开始解析之时的 Unix毫秒时间戳。如果一个持久连接被使用，或者该信息已经被本地资源或者缓存存储，则该值等同于 PerformanceTiming.fetchStart。
语法
time = performanceTiming.domainLookupStart;
标准
| Specification | Status | Comment |
|---|---|---|
| Navigation Timing PerformanceTiming.domainLookupStart |
Recommendation | Initial definition. |
浏览器兼容性
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.
Update compatibility data on GitHub
| Desktop | Mobile | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
domainLookupStart | Chrome Full support 6 | Edge Full support 12 | Firefox Full support 7 | IE Full support 9 | Opera Full support 15 | Safari No support No | WebView Android Full support Yes | Chrome Android Full support Yes | Edge Mobile Full support Yes | Firefox Android Full support 7 | Opera Android Full support 14 | Safari iOS No support No | Samsung Internet Android ? |
Legend
- Full support
- Full support
- No support
- No support
- Compatibility unknown
- Compatibility unknown
- Deprecated. Not for use in new websites.
- Deprecated. Not for use in new websites.
参见
- 它属于
PerformanceTiming接口。