Window: beforeprint event
Baseline Widely available
This feature is well established and works across many devices and browser versions. It’s been available across browsers since September 2019.
The beforeprint
event is fired when the associated document is about to be printed or previewed for printing.
The afterprint
and beforeprint
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 like addEventListener()
, or set an event handler property.
addEventListener("beforeprint", (event) => {});
onbeforeprint = (event) => {};
Event type
A generic Event
.
Examples
Using addEventListener()
:
window.addEventListener("beforeprint", (event) => {
console.log("Before print");
});
Using the onbeforeprint
event handler property:
window.onbeforeprint = (event) => {
console.log("Before print");
};
Specifications
Specification |
---|
HTML Standard # event-beforeprint |
HTML Standard # handler-window-onbeforeprint |
Browser compatibility
BCD tables only load in the browser
See also
- Related events:
afterprint