How put a variable in a link

Question

i have this link and this variable:

var fin = "SAT000000002574";
"http://sat3.altervista.org/index.php?id='+fin'"

I don't know how i have to write this link. I have syntax problem. I tried but the link is ever wrong. Help me

Answer 1

Interpolation is not standard in javascript. Maybe this can help you http://www.diveintojavascript.com/projects/javascript-sprintf

Contatination is your best option, but the methods below can also help.

String.concat();

["foo", "bar"].join("");

Answer 2

You can just simply using a + to concatenate the fin variable here:

var fin = "SAT000000002574";
"http://sat3.altervista.org/index.php?id="+fin

Answer 3

youre mixing double quotes with single quotes

 "http://sat3.altervista.org/index.php?id="+fin