“In the old days, JavaScript did not have classes” gave me a laugh. This was 3-4 years ago.
You can use it if you want to, but it has never been popular in C++, and in 20 years I have never encountered a problem that could be solved by using it, so I have never used it. And in C++ bind is part of the functional programming paradigm, as it does currying, not much to do with classes.
Bind in JavaScript makes your shoehorned collection of attributes actually behave like objects. We can see JavaScript's bind used everywhere.
class C {
handleEvent() {}
someMethod() {
onEvent(this.handleEvent); // bad; "this" lost
onEvent(this.handleEvent.bind(this); // ok
}
}
class C {
public:
void handle_event() {}
void some_method() {
on_event(&C::handle_event); // bad; error
on_event(std::bind(&C::handle_event, this)); // ok
}
};