The ratechange event is fired when the playback rate has changed.

This event is not cancelable and does not bubble.

Use the event name in methods like addEventListener(), or set an event handler property.

addEventListener("ratechange", (event) => {});

onratechange = (event) => {};

A generic Event.

These examples add an event listener for the HTMLMediaElement's ratechange event, then post a message when that event handler has reacted to the event firing.

Using addEventListener():

const video = document.querySelector("video");

video.addEventListener("ratechange", (event) => {
  console.log("The playback rate changed.");
});

Using the onratechange event handler property:

const video = document.querySelector("video");

video.onratechange = (event) => {
  console.log("The playback rate changed.");
};

• The HTMLMediaElement playing event
• The HTMLMediaElement waiting event
• The HTMLMediaElement seeking event
• The HTMLMediaElement seeked event
• The HTMLMediaElement ended event
• The HTMLMediaElement loadedmetadata event
• The HTMLMediaElement loadeddata event
• The HTMLMediaElement canplay event
• The HTMLMediaElement canplaythrough event
• The HTMLMediaElement durationchange event
• The HTMLMediaElement timeupdate event
• The HTMLMediaElement play event
• The HTMLMediaElement pause event
• The HTMLMediaElement ratechange event
• The HTMLMediaElement volumechange event
• The HTMLMediaElement suspend event
• The HTMLMediaElement emptied event
• The HTMLMediaElement stalled event

• HTMLAudioElement
• HTMLVideoElement
• <audio>
• <video>