非標準
This feature is not on a current W3C standards track, but it is supported on the Firefox OS platform. Although implementations may change in the future and it is not supported widely across browsers, it is suitable for use in code dedicated to Firefox OS apps.
This API is available on Firefox or Firefox OS for installed or higher privileged applications.
概要
frequency プロパティの値は、現在のラジオ周波数を返します。
構文
var frequency = instanceOfFMRadio.frequency
値
ラジオ周波数の MHz (MegaHertz) 単位の値を返します。
例
window.addEventListener('frequencychange', function () {
console.log("周波数が " + navigator.mozFMRadio.frequency + "MHz に変更されました");
});
仕様書
仕様はありません。