function getFee(isMember) {
  return isMember ? "$2.00" : "$10.00";
}

console.log(getFee(true));
// : "$2.00"

console.log(getFee(false));
// : "$10.00"

console.log(getFee(null));
// : "$10.00"

condition ? exprIfTrue : exprIfFalse

const age = 26;
const beverage = age >= 21 ? "" : "";
console.log(beverage); // ""

const greeting = (person) => {
  const name = person ? person.name : "";
  return `${name}`;
};

console.log(greeting({ name: "" })); // ""
console.log(greeting(null)); // ""

function example() {
    return condition1 ? value1
         : condition2 ? value2
         : condition3 ? value3
         : value4;
}

function example() {
  if (condition1) {
    return value1;
  } else if (condition2) {
    return value2;
  } else if (condition3) {
    return value3;
  } else {
    return value4;
  }
}