JavaScript in parseint (), 08, 09, return 0

The return value is 0 when using parseint (08), parseint (09) For integer conversions in JavaScript.

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1. In JavaScript, when converting integers using parseint (08), parseint (09), the return value is 0, and parseint ("07") is correct, because when there is "0" in front, JavaScript would think of this as an octal number, and "08" and "09" were not a valid octal number, so that caused the problem.

   The parseint function actually has another parameter that shows that the parseint is handled in decimal.

   The workaround:

   parseint ("08", 10) or parseint ("09", 10)

   Number ("08") or number ("09")

   This should not be called a bug, but it is our technology is not refined, it does not understand, will appear this headache problem.

JavaScript in parseint (), 08, 09, return 0