Sets the audio/video volume.
Calling media.volume() without an argument returns the current volume as a number in the range 0 (off) to 1 (maximum).
The parameter, val, is optional. It's a number that sets the volume from 0 (off) to 1 (maximum). For example, calling media.volume(0.5) sets the volume to half of its maximum.
예제
구문
volume()volume(val)매개변수
val
Number:
volume between 0.0 and 1.0.
Returns
Number: current volume.
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