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.
addEventListener('readystatechange', event => { });
onreadystatechange = event => { };
Event type
A generic Event
.
Examples
Live example
HTML
<div class="controls">
<button id="reload" type="button">Reload</button>
</div>
<div class="event-log">
<label>Event log:</label>
<textarea readonly class="event-log-contents" rows="8" cols="30"></textarea>
</div>
CSS
JS
const log = document.querySelector('.event-log-contents');
const reload = document.querySelector('#reload');
reload.addEventListener('click', () => {
log.textContent ='';
window.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