x = -0
>> -0
typeof(x)
>> "number"
x.toString()
>> "0"
console.log(x)
>> -0
How can I convert Javascript's −0 (number zero with the sign bit set rather than clear) to a two character string ("-0"
) in the same way that console.log
does before displaying it?
If Node.js (or npm available¹) util.inspect
will do that:
> util.inspect(-0)
'-0'
If not, you can make a function:
const numberToString = x =>
Object.is(x, -0) ?
'-0' :
String(x);
Substitute the condition with x === 0 && 1 / x === -Infinity
if you don’t have Object.is
.
¹ I haven’t read this package’s source and it could be updated in the future anyway; look at it before installing!