Is it possible to read the clipboard in Firefox, Safari and Chrome using JavaScript?

Question

I'm trying to read the contents of the clipboard using JavaScript. With Internet Explorer it's possible using the function

window.clipboardData.getData("Text") 

Is there a similar way of reading the clipboard in Firefox, Safari and Chrome?

Answer 1

Safari supports reading the clipboard during onpaste events:

Information

You want to do something like:

someDomNode.onpaste = function(e) {     var paste = e.clipboardData && e.clipboardData.getData ?         e.clipboardData.getData('text/plain') :                // Standard         window.clipboardData && window.clipboardData.getData ?         window.clipboardData.getData('Text') :                 // MS         false;     if(paste) {         // ...     } }; 

Answer 2

Online Spreadsheets hook Ctrl+C, Ctrl+V events and transfer focus to a hidden TextArea control and either set it contents to desired new clipboard contents for copy or read its contents after the event had finished for paste.