onChanged
Fired when the keyboard shortcut for a command is changed.
The listener is passed an object containing the name of the command, its new active shortcut, and its old shortcut.
Syntax
js
browser.commands.onChanged.addListener(listener)
browser.commands.onChanged.removeListener(listener)
browser.commands.onChanged.hasListener(listener)
Events have three functions:
addListener(listener)
-
Adds a listener to this event.
removeListener(listener)
-
Stop listening to this event. The
listener
argument is the listener to remove. hasListener(listener)
-
Check whether
listener
is registered for this event. Returnstrue
if it is listening,false
otherwise.
addListener syntax
Parameters
listener
-
The function called when a command's shortcut changes. The function is passed these arguments:
changeInfo
-
object
. An object containing containing the name of the command, its new active shortcut, and its old shortcut.name
-
string
. Name of the command. This matches the name given to the command in its manifest.json entry. newShortcut
-
string
. The new active shortcut for this command, or blank if no shortcut is active. oldShortcut
-
string
. The shortcut that was active for this command, or blank if no shortcut was active.
Browser compatibility
BCD tables only load in the browser
Examples
You could log changes to command shortcuts like this:
js
function handleChanged(changeInfo) {
console.log(`Shortcut for: ${changeInfo.name} changed`);
console.log(`From: ${changeInfo.oldShortcut}`);
console.log(`To: ${changeInfo.newShortcut}`);
}
browser.commands.onChanged.addListener(handleChanged);