how to return false in ternary operator code example

Example 1: ternary function javascript

var variable;
if (condition)
  variable = "something";
else
  variable = "something else";

//is the same as:

var variable = condition ? "something" : "something else";

Example 2: ternary operator in javascript

FullName: (obj.FirstName && obj.LastName) ? obj.FirstName + " " + obj.LastName : "missing values",