Subtraction gives weird number

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1

Hi,

I just found out that if I write the following code

$w("#button1").label = String(22.03 - 4.47);

It returns “17.560000000000002” instead of “17.56”. It’s a simple subtraction, why is adding so many zeros and a 2 at the end? And how do I fix it? I only know these numbers where it happens.

2

This is standard JavaScript behavior.

Try this:

$w("#button1").label = (22.03 - 4.47).toFixed(2).toString();