Document: readystatechange 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 readystatechange
event is fired when the readyState
attribute of a document has changed.
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("readystatechange", (event) => {});
onreadystatechange = (event) => {};
Event type
A generic Event
.
Examples
Live example
HTML
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>
CSS
JavaScript
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`;
});
Result
Specifications
Specification |
---|
HTML # event-readystatechange |
Browser compatibility
Report problems with this compatibility data on GitHubdesktop | mobile | |||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|
readystatechange event |
Legend
Tip: you can click/tap on a cell for more information.
- Full support
- Full support
The compatibility table on this page is generated from structured data. If you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request.
See also
- Related events:
DOMContentLoaded
,load
,beforeunload
,unload