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emjayess/valid_function_args.example.js

Created August 27, 2011 15:44
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advice: existence and type check for function arguments
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valid_function_args.example.js
function gimmeh_funcs(myfunc, callback) {
if (myfunc && typeof myfunc === 'function') {
/* myfunc is safe to use */
}
if (callback && typeof callback === "function") {
/* callback is safe to use */
}
}
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see also add'l typeof caveats and a useful toType() implementation:

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