beforepaste | onbeforepaste event

Fires on the target object before the selection is pasted from the system clipboard to the document.

Syntax

HTML Attribute	<element onbeforepaste = "handler(event)">
Event Property	object.onbeforepaste = handler;
attachEvent Method	object.attachEvent("onbeforepaste", handler)
addEventListener Method	object.addEventListener("beforepaste", handler, useCapture)

There are no standards that apply here.

Creating custom code for pasting requires several steps:

Set event.returnValue=false in the onbeforepaste event to enable the Paste shortcut menu item.
Cancel the default behavior of the client by including event.returnValue=false in the onpaste event handler. This guideline applies only to objects, such as the text box, that have a defined default behavior.
Specify a data format in which to paste the selection through the getData method of the clipboardData object.
Invoke the getData method in the onpaste event to execute custom code for pasting.

None.

To invoke this event, do one of the following:

The pEvtObj parameter is required for the following interfaces: