/* On a return key, send the content of the textArea back to the add-on, and zero the textArea for the next time. */ var textArea = document.getElementById('annotation-box'); textArea.onkeyup = function(event) { if (event.keyCode == 13) { self.postMessage(textArea.value); textArea.value = ''; } }; self.on('message', function() { var textArea = document.getElementById('annotation-box'); textArea.value = ''; textArea.focus(); });