Question

Is there a shorter way to write this?

var ttt = "dd";
if (ttt.length < 3) 
ttt= "i" + ttt;

Answer 1

Yours is pretty short, but if you want to use the the conditional operator (a.k.a the ternary operator), you could do the following:

var ttt = "dd";
ttt = ttt.length < 3 ? "i" + ttt : ttt;

… or if bytes are really precious (code golfing?), you could also do something like this:

var ttt = "dd".length < 3 ? "i" + "dd" : "dd";

… but then that could be reduced to just:

var ttt = "idd";

… as @Nick Craver suggested in a comment below.