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Thread: parseInt('08') returns 0

  1. Jun 28th, 2002, 04:02 AM #1
    shunt
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    Question parseInt('08') returns 0

    Hi,

    I am having a real problem with this. I want to convert a string '08' to an integer 8, but the parseInt function seems to return 0 for this string... It also seems to do the same with '09'.

    All values less than 8 work fine though .. ?

    Does anyone know of a function that converts these strings correctly?
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  2. Jun 28th, 2002, 07:52 AM #2
    bsw2112
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    you can try using eval() but I am not sure if that is the best
    way but it seems to be working.

    <html>

    <head>
    <title></title>
    </head>

    <body>
    <script>
    var a = '08';
    var b = eval('08');
    b = b * 2
    document.write(b);
    </script>
    </body>
    </html>

    regards

    bsw2112
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  3. Jun 28th, 2002, 09:13 AM #3
    cpradio
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    bsw2112 you are correct, infact if you wanted to really test your number you could use parseInt(eval('08')) which will make whatever is in the quotes a number and then force it as an integer.

    -Matt
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  4. Jul 1st, 2002, 12:53 AM #4
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    Thats all good and well, but why does this happen. It should convert to integer
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  6. Jul 10th, 2002, 05:48 PM #5
    georgec
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    Originally posted by cpradio
    bsw2112 you are correct, infact if you wanted to really test your number you could use parseInt(eval('08')) which will make whatever is in the quotes a number and then force it as an integer.

    -Matt
    The problem is because 08 is not a number, and parseInt() returns the first thing it could find that resembles one. 0 is a number to it, but 08 is not, so it returns 0
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  7. Jul 11th, 2002, 01:03 AM #6
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    I'm confused. If it does not see '08' as a number, why does it see '07' as the number 7?
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  8. Jul 11th, 2002, 05:30 PM #7
    georgec
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    Hmmm...if that's the case I have no idea why. My guess is perhaps 07 is a special keyword/identifier. It seems other numbers like 09 also return 0, not 9.
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  9. Jul 12th, 2002, 02:01 AM #8
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    actually, all the numers '00' -> '07' return their true number eg. 1, 2 etc. It is only '08' and '09' that seem to have a problem with parseInt()
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