Question

I’ve noticed that some sites (usually banks) suppress the ability to paste text into text fields. How is this done? I know that JavaScript can be used to swallow the keyboard shortcut for paste, but what about the right-click menu item?

Answer 1

Probably using the onpaste event, and either return false from it or use e.preventDefault() on the Event object.

Note that onpaste is non standard, don’t rely on it for production sites, because it will not be there forever.

$(document).on('paste',function(e){   console.log('paste')   e.preventDefault()   return false; })