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The TimeRanges interface is used to represent a set of time ranges, primarily for the purpose of tracking which portions of media have been buffered when loading it for use by the <audio> and <video> elements.
A TimeRanges object includes one or more ranges of time, each specified by a starting and ending time offset. You reference each time range by using the start() and end() methods, passing the index number of the time range you want to retrieve.
The term "normalized TimeRanges object" indicates that ranges in such an object are ordered, don't overlap, aren't empty, and don't touch (adjacent ranges are folded into one bigger range).
Properties
TimeRanges.lengthRead only- Returns an
unsigned longrepresenting the number of time ranges represented by the time range object.
Methods
TimeRanges.start()- Returns the time for the start of the range with the specified index.
TimeRanges.end()- Returns the time for the end of the specified range.
Specifications
| Specification | Status | Comment |
|---|---|---|
| WHATWG HTML Living Standard The definition of 'TimeRanges' in that specification. |
Living Standard | Initial definition |
Browser compatibility
| Feature | Chrome | Firefox (Gecko) | Internet Explorer | Opera | Safari (WebKit) |
|---|---|---|---|---|---|
| Basic support | (Yes) | (Yes) | (Yes) | (Yes) | ? |
| Feature | Android | Firefox Mobile (Gecko) | IE Phone | Opera Mobile | Safari Mobile |
|---|---|---|---|---|---|
| Basic support | ? | ? | ? | ? | ? |