HTML Reference Manual

Complete List of HTML Tags

HTML5 onbeforeprint event property

The beforeprint event is triggered when the associated document is about to be printed or previewed for printing.

Online Example

Execute JavaScript when the page is to be printed:

Example

<!DOCTYPE　html>
<html>
<head>
<title>HTML　onbeforeprint　event　property　usage　(basic　tutorial　website　oldtoolbag.com)</title>
<body　onbeforeprint="myFunction()">
<h1>Try　to　print　this　document</h1>
<p><b>Tip:</b>　Keyboard　shortcuts,　such　as　Ctrl+P　sets　the　page　to　print.</p>
<p><b>Note:</b>　The　onbeforeprint　event　is　not　supported　in　Safari　and　Opera.</p>
<script>
function myFunction() {
　　alert("You are about to print this document!");
}
</script>
</body>
</html>

Test it out ‹/›

Browser Compatibility

IEFirefoxOperaChromeSafari

Currently, only Internet Explorer and Firefox browsers support the onbeforeprint event attribute.

Definition and Usage

The onbeforeprint attribute is triggered when the page is about to be printed (before the print dialog appears).
Tip: The onbeforeprint attribute is usually used together with the onafterprint attribute

HTML 4.01 compared to HTML5differences

The onbeforeprint attribute is a part of HTML5New Attributes.

Syntax

<element onbeforeprint="script">

Attribute Value

Value	Description
script	Script executed in onafterprint.

HTML Event Attributes

HTML: <template> tag