Returns the duration in seconds of the current media resource. A
NaN value is returned if duration is not available, or
Infinity if the media resource is streaming.
A floating point number that represents the duration of the current media resource in seconds.
time in seconds
The duration of the current media in seconds.
NaN (Not a Number)
The duration is not available.
The media is streaming.
- HTML5 A vocabulary and associated APIs for HTML and XHTML, Section 188.8.131.52