Variables syntax

inspiredmac · June 29th, 2011, 08:57 PM

On page 71 the following code shows ("") before the closing semicolon. I've seen this syntax used here and there in the text, but I'm not sure what it's for.

Code:

var stringParts = [
"John's family is: ",
family.join(", ")
];
var familylString = stringParts.join("");

jmcpeak · June 29th, 2011, 09:55 PM

Howdy, inspiredmac.

I assume you're talking about the join("");. Well, the parentheses are there because it's executing the array object's join() method. The "" denotes empty text, so each element in the array is going to be concatenated together with no spaces between them.