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JavaScript

Posted by Jong Kim
Jong Kim
6,145 Points

why are we doing '+= ' sign after message? I know it is ' message += "..." ' is same as ' message = message + "...." '

why are we doing '+= ' sign after message? I know it is ' message += "..." ' is same as ' message = message + "...." '. If that's right, shouldn't be shown the message variable next to equation? Why don't we just use 'message = "...." ' instead ' message += "...." ' ?

1 Answer

Lee Vaughn
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STAFF
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Lee Vaughn
Treehouse Teacher
Lee Vaughn
.a{fill-rule:evenodd;}techdegree seal-36
Lee Vaughn
Treehouse Teacher

The difference is that you want to add to what was previously already a part of the message variable.

"Message =" would only be equal to what follows. It would override anything that was previously associated with the Message variable.

"Message +=" is equal to what was previously a part of the Message variable PLUS whatever follows.

Jong Kim
Jong Kim
6,145 Points

Thank you :)