When I in the Terminal to execute the node.js code like bellow:
$ node
> console.log('Hey, Julie!');
Hey, Julie!
undefined
it should print the Hey, Julie! like above, but why there is a undefined there?
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fanhualuojin154873
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undefined is what console.log returns – Trash Can Feb 24 '18 at 04:01
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@Dummy Thank you. I got it. – fanhualuojin154873 Feb 24 '18 at 04:07