The screenState
read-only property of the IdleDetector
interface returns a string indicating whether the screen is locked, one of "locked"
or "unlocked"
.
Either "locked"
or "unlocked"
if IdleDetector.start()
has been called, or null
otherwise.
In the following example, the change
callback prints the status of userState
and screenState
to the console.
idleDetector.addEventListener('change', () => {
const userState = idleDetector.userState;
const screenState = idleDetector.screenState;
console.log(`Idle change: ${userState}, ${screenState}.`);
});