Summary
The property onbeforeprint
sets and returns the onbeforeprint
event handler code for the current window.
Syntax
window.onbeforeprint = event handling code
Notes
Some browsers (including Firefox 6 and later and Internet Explorer) send beforeprint
and afterprint
events to let content determine when printing may have occurred. You can use this to adjust the user interface presented during printing (such as by displaying or hiding user interface elements during the print process).
The event beforeprint
is raised before the print job dialog appears.
For Webkit-based browsers, you can create an equivalent result with
.window.matchMedia
('print')
var mediaQueryList = window.matchMedia('print'); mediaQueryList.addListener('change', function(mql) { if(mql.matches) { console.log('webkit equivalent of onbeforeprint'); } });
Specification
Specification | Status | Comment |
---|---|---|
HTML Living Standard The definition of 'onbeforeprint' in that specification. |
Living Standard |
Browser compatibility
Feature | Chrome | Firefox (Gecko) | Edge | Internet Explorer | Opera | Safari |
---|---|---|---|---|---|---|
Basic support | 63.0 | 6.0 | (Yes) | (Yes) | No support | No support |
Feature | Android Webview | Chrome for Android | Firefox Mobile (Gecko) | Edge | IE Mobile | Opera Mobile | Safari Mobile |
---|---|---|---|---|---|---|---|
Basic support | No support | ? | ? | ? | ? | No support | ? |