This API is available on Firefox or Firefox OS for installed or higher privileged applications.
Summary
The frequency property value returns the current radio frequency.
Syntax
var frequency = instanceOfFMRadio.frequency
Value
Return a number representing the radio frenquence express in MHz (MegaHertz).
Example
window.addEventListener('frequencychange', function () {
console.log("The frequency has changed to: " + navigator.mozFMRadio.frequency + "MHz");
});
Specification
Not part of any specification.
See also
FMRadioFMRadio.onfrequencychange- The
frequencychangeevent.