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By mswatcher
via lostechies.com
Submitted: Mar 19 2014 / 09:56

Every now and then I need to have a method support 2 or 3 arguments, providing a default value for one of them if only 2 are specified. My typical solution is to check the number of arguments passed to the function and reassign the named parameters as needed. I think this is a fairly typical solution in JavaScript. Except I spent about 30 minutes trying to track down a bug, just now, and it’s somewhat perplexing to me.
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