如何将数字转换为浮点数

Question

So for rounding I use

Math.round(num * 100) / 100;

But I also need the decimals like this

1 => 1.00
1.5 => 1.50
1.456 => 1.46

I achieve this with

 num.toFixed(2);

but this returns a string, I know this has to be a string. However is there a way to get the same functionality but returning float values, not string?

1 is the same amount as 1.00

So why do I need those zeros? Because an API I am working with expects float only. Event 1 has to be passed as 1.00 float. Any ideas?

Answer 1

When returning the arguments just convert them to floats from string using parseFloat() on the string you get. Formatting is not part of the float type and thus only the value is stored. If you need formatting as well as the value, a custom class should be created.