files/en-us/web/api/htmlmediaelement/ratechange_event/index.md
{{APIRef("HTMLMediaElement")}}
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 {{domxref("EventTarget.addEventListener", "addEventListener()")}}, or set an event handler property.
addEventListener("ratechange", (event) => { })
onratechange = (event) => { }
A generic {{domxref("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.");
};
{{Specifications}}
{{Compat}}