Paste plain text on contenteditable element

Its a great feature of #html5 to paste a text data into a element with contenteditable attribute, but when you copy data its copy the rich text with format after paste of content its looks ugly in element, so here code its won’t make ugly pasted content.

$('*[contenteditable]').on('paste',function(evnt) {
	evnt.preventDefault();
	var plain_text = (evnt.originalEvent || evnt).clipboardData.getData('text/plain');
	if(typeof plain_text!==’undefined’){
		document.execCommand('insertText', false, plain_text);
	}
});