parseInt([1,2,3])
1
parseInt([[1,2,3]])
1
parseInt([[['101',2,3]]], 2)
5
tested with Chrome12, Firefox3.6, IE6, IE8.
parseInt([1,2,3]) 1 parseInt([[1,2,3]]) 1 parseInt([[[‘101’,2,3]]], 2) 5 tested with Chrome12, Firefox3.6, IE6, IE8.
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parseInt([1,2,3])
1
parseInt([[1,2,3]])
1
parseInt([[['101',2,3]]], 2)
5
tested with Chrome12, Firefox3.6, IE6, IE8.
Because,
[1,2,3].toString()will return1,2,3, hence why you get a1on the first two lines.parseInt()will stop looking for a numeric value after it hits aNaN, which in this case is the comma,. That’s where it stops parsing and returns whatever number it has found so far.