The readystatechange
event is fired when the readyState
attribute of a document has changed.
This event is not cancelable and does not bubble.
The readystatechange
event is fired when the readyState
attribute of a document 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.
js
addEventListener("readystatechange", (event) => {}); onreadystatechange = (event) => {};
A generic Event
.
html
<div class="controls"> <button id="reload" type="button">Reload</button> </div> <div class="event-log"> <label for="eventLog">Event log:</label> <textarea readonly class="event-log-contents" rows="8" cols="30" id="eventLog"></textarea> </div>
js
const log = document.querySelector(".event-log-contents"); const reload = document.querySelector("#reload"); reload.addEventListener("click", () => { log.textContent = ""; setTimeout(() => { window.location.reload(true); }, 200); }); window.addEventListener("load", (event) => { log.textContent = `${log.textContent}load\n`; }); document.addEventListener("readystatechange", (event) => { log.textContent = `${log.textContent}readystate: ${document.readyState}\n`; }); document.addEventListener("DOMContentLoaded", (event) => { log.textContent = `${log.textContent}DOMContentLoaded\n`; });
Specification |
---|
HTML Standard # event-readystatechange |
Desktop | Mobile | |||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|
Chrome | Edge | Firefox | Internet Explorer | Opera | Safari | WebView Android | Chrome Android | Firefox for Android | Opera Android | Safari on IOS | Samsung Internet | |
readystatechange_event |
9 | 12 | 4 | 4 | ≤12.1 | 5.1 | ≤37 | 18 | 4 | ≤12.1 | 5 | 1.0 |
DOMContentLoaded
, load
, beforeunload
, unload
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https://developer.mozilla.org/en-US/docs/Web/API/Document/readystatechange_event