I'm a bit confused about the order of transition() and call(), i.e. gx.transition(t).call(...) bar.data(...).call(bar => bar.transition(t).attr(...)) Is there a good way to easily explain it? Thank you!

This is an awesome example explaining how data joins work. However, the use of `update` as the function name led to some confusion with the `update` selection. An alternate name like `redraw` could alleviate this problem. Thanks for the example.

Did anyone who implemented the code for joining by index be willing to share it?

Why is necessary to put the transition code within a `call` function?

Because we want the return value of the entire expression to evaluate to a selection, not a transition.

If I had to put this while statement into React component in what lifecycle method should it stays ?