Closed
Bug 307182
Opened 19 years ago
Closed 19 years ago
Javascript function parseInt parses "08" and "09" incorrectly
Categories
(Firefox :: General, defect)
Tracking
()
People
(Reporter: heinz.sporn, Unassigned)
Details
Attachments
(1 file)
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629 bytes,
text/html
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Details |
User-Agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.7.10) Gecko/20050902 Firefox/1.0.6
Build Identifier: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.7.10) Gecko/20050902 Firefox/1.0.6
The Javascript function parseInt parses some rather simple strings incorrectly.
I just tested the following strings: '01', '02", '03', '04', '05', '06', '07',
'08', '09', '10'. All strings except '08' and '09' are correctly transformed to
their corresponding integer values. But '08' and '09' result in the integer value 0.
Reproducible: Always
Steps to Reproduce:
Try the following test code:
<html>
<head><title>parseInt Test</title>
<script language="Javascript">
function fnParseInt() {
alert ('00='+parseInt('00'));
alert ('01='+parseInt('01'));
alert ('02='+parseInt('02'));
alert ('03='+parseInt('03'));
alert ('04='+parseInt('04'));
alert ('05='+parseInt('05'));
alert ('06='+parseInt('06'));
alert ('07='+parseInt('07'));
alert ('08='+parseInt('08'));
alert ('09='+parseInt('09'));
alert ('10='+parseInt('10'));
}
</script>
</head>
<body onload="fnParseInt();">
</body>
</html>
Actual Results:
Values '08' and '09' result in 0.
Expected Results:
8 and 9.
Found this misbehaviour both in Firefox for Linux 1.0.6 and Firefox for Windows
1.0.1.
Also it makes no difference using a temp variable to influence type casting like:
var iTemp=0;
iTemp=parseInt('08');
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Comment 1•19 years ago
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parseInt treats numbers starting with 0 as octal. The digits "8" and "9" don't
exist in octal, so the number "08" is considered to end before the "8". If you
want to treat the number as decimal regardless of prefixes, pass parseInt a
second parameter of 10 (e.g. parseInt("08", 10)).
*** This bug has been marked as a duplicate of 43425 ***Status: UNCONFIRMED → RESOLVED
Closed: 19 years ago
Resolution: --- → DUPLICATE
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Updated•19 years ago
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Summary: Javascript function parseInt parses incorrectly → Javascript function parseInt parses "08" and "09" incorrectly
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Updated•19 years ago
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Status: RESOLVED → VERIFIED
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Reporter | |
Comment 3•19 years ago
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After consulting the Core Javascript Reference 1.5 I have to admit that Firefoxes behaviour is 100% following the rules. It seems that browsers like Opera and IE didn't implement parseInt according to the specs. I should have looked into the reference first - sorry for the inconvenience.
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Description
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