is-undo-redo

Check if a key event is undo or redo. This uses Cmd+Z or Ctrl+Z for undo, and Cmd+Shift+Z or Ctrl+Shift+Z for redo.

var events = require('dom-events')
var isUndo = require('is-undo-redo').undo
var isRedo = require('is-undo-redo').redo

events.on(element, 'keydown', function(ev) {
	if (isUndo(ev)) {
		//.. handle undo
	} else if (isRedo(ev)) {
		//.. handle redo
	}
})

Usage

isUndoRedo.undo(event[, style])

isUndoRedo.redo(event[, style])

You can specify a style string to explicitly allow one keystroke or the other:

• "mac" only allows Cmd+Z and Cmd+Shift+Z
• "windows" only allows Ctrl+Z and Ctrl+Shift+Z

If no style is specified, both will be accepted.

isUndoRedo(event[, style])

Returns true if the key event was either undo or redo.

License

MIT, see LICENSE.md for details.