Why does eval(0047) return a value of 39? (047 and 00047 produce the same result)
And Why does eval(056) return a value of 46?
But...eval(0048) returns a value of 48, as expected!
It has something to do with the leading zeroes obviously, but I can't figure it out, any help would be appreciated.
You don't need eval, you just need an integer literal beginning with 0 and where no digits are greater than 7 for JS to see that you're expressing an octal literal value. For example:
console.log(011) // 9
Similarly for hexadecimal:
console.log(0xcd) // 205
See also the Integers section on MDN.
It's octal, base 8. The 4 is the "8's" place, not the "10's" place.
4 * 8 = 32 + 7 = 39.
