Document - Web APIs
globaleventhandlers.onpointerlockchange is an eventhandler representing the code to be called when the pointerlockchange event is raised.
... also available via the onpointerlockchange property.

GlobalEventHandlers - Web APIs
globaleventhandlers.onpointerlockchange is an eventhandler representing the code to be called when the pointerlockchange event is raised.
... candidate recommendation adds onpointerlockchange and onpointerlockerror on document.

Document: pointerlockchange event - Web APIs
bubbles yes cancelable no interface event event handler property onpointerlockchange examples using addeventlistener(): document.addeventlistener('pointerlockchange', (event) => { console.log('pointer lock changed'); }); using the onpointerlockchange event handler property: document.onpointerlockchange = (event) => { console.log('pointer lock changed'); }; specifications specification status pointer lock candidate recommendation ...

Pointer Lock API - Web APIs
if ("onpointerlockchange" in document) { document.addeventlistener('pointerlockchange', lockchangealert, false); } else if ("onmozpointerlockchange" in document) { document.addeventlistener('mozpointerlockchange', lockchangealert, false); } function lockchangealert() { if(document.pointerlockelement === canvas || document.mozpointerlockelement === canvas) { console.log('the pointer lock status is now locked'...