Usage of Button?

[zenon]

Hi,

can you please tell me how to use the Button? It always seems to have the value given as argument "label" to the constructor.

Thank you!, z.

[fonsp]

That's right - it does not make a lot of sense in most cases!

However, sometimes it can be useful to "trigger reactivity", for example:

@bind go Button("Go!")

data = let
    go # we reference `go`, making this cell a dependency of the first cell
    rand(100)
end

sum(data)

When you click Go!, the other two cells start running. So it's useful when you have code that does something different every time (this example), or code that creates side effects, like writing to a file or appending to an array.

[fonsp]

You can use a CheckBox if you want to know the toggled state.

[zenon]

Nice trick. Thank you!