Javascript variable with leading zeroes

Question

Javascript behaves differently with values having leading zeroes. alert(b) - prints different value.

var a = 67116;
var b = 00015;
alert(a);
alert(b);
         


        

Answer 1

A leading 0 makes the value an octal literal, so the value you put will be interpreted as a base 8 integer.

In other words, 015 will be equivalent to parseInt('15', 8).