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![Mousa Zeidan](https://secure.gravatar.com/avatar/00a874f651d1f8c05e74291fa5b57df4?s=96&d=https%3A%2F%2Fecs-static.teamtreehouse.com%2Fassets%2Fcontent%2Fdefault_avatar-445fbbabfc8dc9188fb5967fe43322ee0c3e0dd1e10f378bf8343784af5a13eb.webp&r=pg)
Mousa Zeidan
2,490 PointsPurpose of (message)?
Why does Dave include (message) in his function? Why wouldn't this work?
function print() { document.write(); }
2 Answers
![andren](https://secure.gravatar.com/avatar/229e60726cd92951c31d7303e40be2cd?s=96&d=https%3A%2F%2Fecs-static.teamtreehouse.com%2Fassets%2Fcontent%2Fdefault_avatar-445fbbabfc8dc9188fb5967fe43322ee0c3e0dd1e10f378bf8343784af5a13eb.webp&r=pg)
andren
28,558 PointsThe document.write()
method takes whatever you pass in as an argument (within its parenthesis) and writes that to the page. If you don't pass any argument then it simply blanks the page. So he defines and uses the message
parameter so that he can actually pass some data into the function to be used with the document.write()
method.
![Erin Highbaugh](https://uploads.teamtreehouse.com/production/profile-photos/5947062/micro_erinprofilepic_xlarge.jpg)
Erin Highbaugh
18,082 PointsThanks for the question and answer! I was wondering the same thing.
Mousa Zeidan
2,490 PointsMousa Zeidan
2,490 PointsThanks for your answer!