function copyEvent(evt) { evt.clipboardData.getData('Text'); //undefined } document.addEventListener('copy',copyEvent, true); Access to the clipboard, set and get should be allowed within oncopy and onpaste. Data in the clipboard that the user is trying to copy should already be on the clipboard during the execution of oncopy, or there should be an onaftercopy function. Relevance: Building in browser code editing software and safari incorrectly copies new line characters entered by the user inside a contentEditable=true / designMode=true element. Ability to replace \r with \r\n is required in order to fix this issue on windows machines.
Note: The use isn't only for replacing the new line character. However I did find a way to work around my particular issue. Access to these copy/paste functions are fairly important in-case there ends up being a problem with the way the browser is responding and the application needs to correct it. Thank you.