Question

Possible Duplicate:
How to parseInt a string with leading 0

I’m using Google Chrome ver. 21.0.1180.89

I execute:

var a="07:30";
console.log(a.substring(0,2)+" --> "+parseInt(a.substring(0,2)));

the output is right: “07 –> 7” OK

I execute:

var a="08:30";
console.log(a.substring(0,2)+" --> "+parseInt(a.substring(0,2)));

the output is right: “08 –> 0” WRONG

why?

Answer 1

String begins with “0” taken as octal. You have to set radix 10 in parseInt()

Try this,

var a="08:30";
console.log(a.substring(0,2)+" --> "+parseInt(a.substring(0,2), 10));​