Prevent contenteditable adding on ENTER – Chrome

Try this:

$('div[contenteditable]').keydown(function(e) {
    // trap the return key being pressed
    if (e.keyCode === 13) {
        // insert 2 br tags (if only one br tag is inserted the cursor won't go to the next line)
        document.execCommand('insertHTML', false, '<br/>');
        // prevent the default behaviour of return key pressed
        return false;
    }
});

Click here for demo