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As a case study, I am trying to get to grips with this code snippet that uses the parseInt() function, and have a couple questions:
var maxChars = parseInt( formField.attr('maxlength') ? formField.attr('maxlength') : counter.text() );
Why is formField.attr('maxlength') there twice?
How does a Radix parameter work in this example?
The
radixis another name forbase, i.e. 2 for binary, 10 for decimal, 16 for hexadecimal, explained in more detail on the Mozilla Developer Network site.In your example there is no radix parameter, so the interpreter will fall back to the default behaviour, which typically treats numbers as decimal, unless they start with a zero (octal) or
0x(hexadecimal).