0 infront of number is an operator of sorts?

[yanet.cabrera]

code:
console.log(0100);
console.log(050);
console.log(025);
console.log(02);
console.log(01000);

returns:
40
21
2
512

anyone know why?

[bhatnagars]

@yanet.cabrera

console.log(0100);
console.log(050);
console.log(025);
console.log(02);
console.log(01000);

Its converting the number following the 0 to octal.

[yanet.cabrera]

thank you! do you happen to know why?

[jdonwells]

The number following 0 is in octal. When you log it to the console it is converted to decimal.

So 100 octal (base 8) converts to 64 decimal. While 50 octal converts to 40 base 10.