Mute audio using javascript

Hi Anitha

I would suggest that you add an extra variable, and another trigger:

In storyline add the variable "muted", which could be a true/false. Then use it in your code.

var player = GetPlayer();
var muted = player.GetVar("muted");
var a = document.getElementsByTagName('audio');
for(var i=0; i < a.length; i++)
{
if (a[i].volume>0)
{
a[i].volume=0;
player.SetVar("muted", true)
}
else
{
a[i].volume=1;
player.SetVar("muted", false)
}
}

This will tell set an custom variable which you can use to check if the use has chosen to mute the audio. 

Then for each audio piece, add an extra trigger to run at the same time as the next audio file starts with the following code:

var player = GetPlayer();
var muted = player.GetVar("muted");
if (muted)
{
a[i].volume=0;
}

This will check if the user has chosen to mute the audio, and remute if so.