Window: beforeprint event
BaselineWidely available
This feature is well established and works across many devices and browser versions. It’s been available across browsers since September 2019.
Thebeforeprint event is fired when the associated document is about to be printed or previewed for printing.
Theafterprint andbeforeprint events allow pages to change their content before printing starts (perhaps to remove a banner, for example) and then revert those changes after printing has completed. In general, you should prefer the use of a@media print CSS at-rule, but it may be necessary to use these events in some cases.
Syntax
Use the event name in methods likeaddEventListener(), or set an event handler property.
js
addEventListener("beforeprint", (event) => { })onbeforeprint = (event) => { }Event type
A genericEvent.
Examples
UsingaddEventListener():
js
window.addEventListener("beforeprint", (event) => { console.log("Before print");});Using theonbeforeprint event handler property:
js
window.onbeforeprint = (event) => { console.log("Before print");};Specifications
| Specification |
|---|
| HTML # event-beforeprint |
| HTML # handler-window-onbeforeprint |
Browser compatibility
See also
- Related events:
afterprint