Let me give you an example.

var a = 2.0;

var stringA =  + a;

I will get: stringA = 2, but I want: stringA = 2.0.

I don't want to lose precision however, so if:

var b = 2.412;

var stringB =  + b;

I want to get the standard: stringB = 2.412.

That's why toFixed() won't work here. Is there any other way to do it, than to explicitly check for whole numbers like this?:

if (a % 1 === 0)

    return  + a + .0;

else

    return  + a;