Javascript date object confusion

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Function parameters allow a function to operate on different inputs. In this case, inDate is the local name given to the argument supplied when you call the function. So the function should be:

function dateUS(inDate) {
    document.write(getMonth(dateUS) + "https://stackoverflow.com/" + dateUS.getDate() + "https://stackoverflow.com/" + dateUS.getFullYear());
}

If you want to write today’s date, you call the function this way:

dateUS(today);

There isn’t enough information in the question to explain why undefined is being shown after the date. My guess is you’re doing something like:

document.write(dateUS(today));

This would be appropriate if dateUS returned its result instead of writing it itself. That probably would be a better way to define it, but it’s not how you did it.

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