//================================================ /* Simple Chrome extension Manifest V3 Tutorial Copyright (C) 2022 Stefan vd www.stefanvd.net This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version. This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with this program; if not, write to the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. To view a copy of this license, visit http://creativecommons.org/licenses/GPL/2.0/ */ //================================================ var newdiv = document.createElement("div"); newdiv.id = "hellothere"; newdiv.style.background = "blue"; newdiv.style.color = "white"; newdiv.style.zIndex = 1000; newdiv.style.position = "absolute"; newdiv.style.top = 0; newdiv.style.left = 0; newdiv.style.width = "200px"; newdiv.style.height = "100px"; newdiv.style.display = "flex"; newdiv.style.justifyContent = "center"; newdiv.style.alignItems = "center"; newdiv.innerText = "I am here"; document.body.appendChild(newdiv)