Document: readystatechange event
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 Standard # event-readystatechange |
Browser compatibility
BCD tables only load in the browser
See also
- Related events:
DOMContentLoaded
,load
,beforeunload
,unload