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volumeupbutton
The event fires when the user presses the volume up button.
document.addEventListener("volumeupbutton", yourCallbackFunction, false);
Details
If you need to override the default volume up behavior you can
register an event listener for the volumeupbutton
event.
Applications typically should use document.addEventListener
to
attach an event listener once the [deviceready](events.deviceready.html)
event fires.
Supported Platforms
- BlackBerry 10
Quick Example
document.addEventListener("volumeupbutton", onVolumeUpKeyDown, false);
function onVolumeUpKeyDown() {
// Handle the volume up button
}
Full Example
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN"
"http://www.w3.org/TR/html4/strict.dtd">
<html>
<head>
<title>Volume Up Button Example</title>
<script type="text/javascript" charset="utf-8" src="cordova.js"></script>
<script type="text/javascript" charset="utf-8">
// Wait for device API libraries to load
//
function onLoad() {
document.addEventListener("deviceready", onDeviceReady, false);
}
// device APIs are available
//
function onDeviceReady() {
// Register the event listener
document.addEventListener("volumeupbutton", onVolumeUpKeyDown, false);
}
// Handle the volume up button
//
function onVolumeUpKeyDown() {
}
</script>
</head>
<body onload="onLoad()">
</body>
</html>