med1um

[Registry]
Root: HKA; Subkey:"Software\Microsoft\Windows\CurrentVersion\Run"; ValueType: string; ValueName: ""; ValueData: "{app}\App1.exe"; Flags: uninsdeletevalue

chrome.tabs.query({active: true, currentWindow: true}, function(tabs) {
  var tab = tabs[0];
  chrome.tabs.sendMessage(tab.id, {content: "message"}, function(response) {});
});

var obj = {
   checkbox: 'checked'
};
chrome.storage.local.set(obj);

chrome.storage.local.get('checkbox', function (result) {
    var checkboxState =  result['checkbox'];
    // result['checkbox'] вернёт undefined если такого имени ключа нет в хранилище
    // ... 
});

var clickedElement = document.elementFromPoint(event.clientX, event.clientY);