Unable to check runtime.lastError during browserAction.setBadgeText

Question

chrome.browserAction.setBadgeText(object details) is used to set the badge text for a chrome extension. However, if the tabId doesn\'t exist, Chrome produces the following e

Answer 1

In addition to chrome.tabs.get() as described above, you can also piggyback off an existing browserAction method that accepts a callback to catch for errors. Example:

var tabId = 5000;
chrome.browserAction.getTitle({tabId: tabId}, function(result) {
  if (chrome.runtime.lastError) return;
  // The coast is clear...
  chrome.browserAction.setBadgeText({
    text: 'text',
    tabId: tabId
  });
});

Good news: chrome.browserAction.setBadgeText() should also support a callback function like chrome.browserAction.getTitle() starting with Chrome 67 according to one source. Fingers crossed!