// var chapterHolder = document.getElementById('chapters'); var list = document.getElementById('chapters'); var title = localStorage.getItem('title'); if (title === null) { title = []; } else { title = JSON.parse(title); } for (var i = 0; i < title.length; i++) { var listItem = document.createElement('li'); var label = document.createElement('span'); label.innerHTML = title[i].title; listItem.appendChild(label); list.appendChild(listItem); } document.getElementById('closeButton').onclick = function () { chrome.tabs.query({ currentWindow: true, active: true // Select active tab of the current window }, function(tab) { chrome.tabs.sendMessage( // Send a message to the content script tab[0].id, { line: 'countparas' } ); }); }; browser.runtime.onMessage.addListener(function(request) { console.log('cccccc', request); }); document.getElementById('saveButton').onclick = function () { window.open(window.location, '_self').close(); };