The progress
event is fired periodically as the browser loads a resource.
This event is not cancelable and does not bubble.
The progress
event is fired periodically as the browser loads a resource.
This event is not cancelable and does not bubble.
Use the event name in methods like addEventListener()
, or set an event handler property.
js
addEventListener("progress", (event) => {}); onprogress = (event) => {};
A generic Event
.
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>
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); } });
Desktop | Mobile | |||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|
Chrome | Edge | Firefox | Internet Explorer | Opera | Safari | WebView Android | Chrome Android | Firefox for Android | Opera Android | Safari on IOS | Samsung Internet | |
progress_event |
3 | 12 | 6 | 9 | ≤12.1 | 3.1 | 4.4 | 18 | 6 | ≤12.1 | 3 | 1.0 |
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https://developer.mozilla.org/en-US/docs/Web/API/HTMLMediaElement/progress_event