DOMHighResTimeStamp
是一个double类型,用于存储时间值。该值可以是离散的时间点或两个离散时间点之间的时间差。T单位为毫秒 ms (milliseconds) ,应准确至5微秒 µs (microseconds)。但是,如果浏览器无法提供准确到5微秒的时间值(例如,由于硬件或软件的限制), 浏览器可以以毫秒为单位的精确到毫秒的时间表示该值。
I无法获得所需精度的实现(例如,如果底层系统不支持),则只能准确到1毫秒。
Properties
This type has no properties.
Methods
This type has no methods.
Specifications
Specification | Status | Comment |
---|---|---|
High Resolution Time Level 2 DOMHighResTimeStamp |
Editor's Draft | Stricter definitions of interfaces and types. |
High Resolution Time DOMHighResTimeStamp |
Recommendation | Initial definition. |
Browser compatibility
Feature | Chrome | Firefox (Gecko) | Internet Explorer | Opera | Safari (WebKit) |
---|---|---|---|---|---|
Basic support | 6 | 7.0 (7.0) | 9 | 15.0 | 8 |
Feature | Android | Firefox Mobile (Gecko) | IE Phone | Opera Mobile | Safari Mobile |
---|---|---|---|---|---|
Basic support | (Yes) | 15.0 (15.0) | 9 | 15.0 | 9 |