HTMLMediaElement: progress event
Baseline Widely available
This feature is well established and works across many devices and browser versions. It’s been available across browsers since July 2015.
The progress event is fired periodically as the browser loads a resource.
This event is not cancelable and does not bubble.
Syntax
Use the event name in methods like addEventListener(), or set an event handler property.
js
addEventListener("progress", (event) => { }) onprogress = (event) => { } Event type
A generic Event.
Examples
>Live example
HTML
html
<div class="example"> <button type="button">Load video</button> <video controls width="250"></video> <div class="event-log"> <label for="eventLog">Event log:</label> <textarea readonly class="event-log-contents" id="eventLog"></textarea> </div> </div> JavaScript
js
const loadVideo = document.querySelector("button"); const video = document.querySelector("video"); const eventLog = document.querySelector(".event-log-contents"); let source = null; function handleEvent(event) { eventLog.textContent += `${event.type}\n`; } video.addEventListener("loadstart", handleEvent); video.addEventListener("progress", handleEvent); video.addEventListener("canplay", handleEvent); video.addEventListener("canplaythrough", handleEvent); loadVideo.addEventListener("click", () => { if (source) { document.location.reload(); } else { loadVideo.textContent = "Reset example"; source = document.createElement("source"); source.setAttribute( "src", "https://mdn.github.io/learning-area/html/multimedia-and-embedding/video-and-audio-content/rabbit320.mp4", ); source.setAttribute("type", "video/mp4"); video.appendChild(source); } }); Result
Specifications
| Specification |
|---|
| HTML> # event-media-progress> |
| HTML> # handler-onprogress> |
Browser compatibility
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