Question

I’ve got an object containing dates in the format YYYY-MM-DD.

I’m extracting the various year, month and day integers so I can send them to a different API.

Here’s an example of my method, using substr()

Demo: http://jsfiddle.net/AppSynergy/tELsw/

OK, it works. OH NO! – it doesn’t – not quite.. What’s wrong with the 3rd element, where the “08” in 8th April decides to be 0 instead?

If I change “08” to another integer e.g. “03”, it’s fine. But “08” causes issues..

This one is driving me crazy — what’s wrong?

If you can spot it, you deserve ice-cream.

Answer 1

08 is considered as an (invalid) octal literal by default.

You have to explicitly specify the radix in your call to parseInt() in order for this token to be considered as a decimal (base 10) number:

$("#debug").append(parseInt(date.substr(5, 2), 10) + " / ");