The load
event is fired when the whole page has loaded, including all dependent resources such as stylesheets and images. This is in contrast to DOMContentLoaded
, which is fired as soon as the page DOM has been loaded, without waiting for resources to finish loading.
Bubbles | No |
Cancelable | No |
Interface | Event
|
Event handler property | onload
|
Examples
Log a message when the page is fully loaded:
window.addEventListener('load', (event) => {
console.log('page is fully loaded');
});
The same, but using the onload
event handler property:
window.onload = (event) => {
console.log('page is fully loaded');
};
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
body {
display: grid;
grid-template-areas: "control log";
}
.controls {
grid-area: control;
display: flex;
align-items: center;
justify-content: center;
}
.event-log {
grid-area: log;
}
.event-log-contents {
resize: none;
}
label, button {
display: block;
}
#reload {
height: 2rem;
}
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 | Status | Comment |
---|---|---|
UI EventsThe definition of 'load' in that specification. | Working Draft | |
HTML Living StandardThe definition of 'load event' in that specification. | Living Standard | This links to the section in the steps that are carried out at the end of loading a document. 'load' events are fired at many elements too. And note there are many places in the specification that refer to things that can "delays the load event". |
Browser compatibility
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.
Update compatibility data on GitHub
Desktop | Mobile | |||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|
load event
|
Chrome
Full support 1 |
Edge
Full support 12 |
Firefox
Full support 1 |
IE
Full support 4 |
Opera
Full support 4 |
Safari
Full support 1.3 |
WebView Android
Full support 1 |
Chrome Android
Full support 18 |
Firefox Android
Full support 4 |
Opera Android
Full support 10.1 |
Safari iOS
Full support 1 |
Samsung Internet Android
Full support 1.0 |
Legend
- Full support
- Full support
See also
- Related events:
DOMContentLoaded
,readystatechange
,beforeunload
,unload
Window: load event by Mozilla Contributors is licensed under CC-BY-SA 2.5.