Question

Basically I want to append the variables one, two and three only if they have a length > 1.

How can this be done?

var params = {
    q: one + two + three;
};

Answer 1

If you mean to do it based on the variables length as a string object:

var params = {
    q: (one.length > 1 ? one : "") + (two.length > 1 ? two : "") + (three.length > 1 ? three : "")
}

or if you mean to append if the variable has been defined:

var params = {
    q: (typeof(one) != "undefined" ? one : "") + (typeof(two) != "undefined" ? two : "") + (typeof(three) != "undefined" ? three : "")
}