I'm using jQuery 1.6.2, the follow picture is the strange problem I found in jQuery (screenshot from my chrome):
Please notice the highlight position. This is so strange, the jQuery function parseJSON change the "picture_id" field. Why?
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1I'm guessing it's some overflow problem? – Anand Feb 07 '12 at 08:22
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1It's not an overflow problem. It's a floating point precision problem – Philippe Leybaert Feb 07 '12 at 08:24
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1@trex279, maybe, when I change the id to string, the parsing result is right. – PinkyJie Feb 07 '12 at 08:25
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The number is too large to fit in a 32 bit integer, so it is stored in a floating point variable. The precision of floating point values is insufficient to store all significant digits in the value in your JSON object.
A good explanation of the floating-point precision "problem" can be found here:
Philippe Leybaert
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That would help. You probably don't need the actual numeric value of the id anyway – Philippe Leybaert Feb 07 '12 at 08:27
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Your number is just to big so it is rounded down to the highest possible number.
What is JavaScript's highest integer value that a Number can go to without losing precision?
Try to use it as string. You could use this BigInt library.
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PiTheNumber
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