JS ninja

gistfile1.js

// I've just found shit like this:

var sth =
    option.type == 't1'
        ? v1
        : option.type == 't2'
            ? v2
            : option.type == 't3'
                ? v3
                : null;

// You want to be JS ninja, so do it the right way:

var sth = {
    t1: v1,
    t2: v2,
    t3: v3
}[option.type] || null;