Returns a boolean value that is true if the Alt (Option or on macOS) key was active when the key event was generated. fireEvent.keyDown(domNode, {key: 'Enter', code: 'Enter', charCode: 13}) fireEvent.keyDown(domNode, {key: 'A', code: 'KeyA'}) Drift correction for sensor readings using a high-pass filter. Was Galileo expecting to see so many stars? How to append HTML code to a div using JavaScript ? You can also filter out the events you want by unchecking the checkboxes at the top. , ,