Bound function as a method
importance: 5
What will be the output?
function f() { alert( this ); // ? } let user = { g: f.bind(null) }; user.g();The answer: null.
function f() { alert( this ); // null } let user = { g: f.bind(null) }; user.g();The context of a bound function is hard-fixed. There’s just no way to further change it.
So even while we run user.g(), the original function is called with this=null.