function if else javascript

var age=20;
if (age < 18) {
	console.log("underage");
} else {
	console.log("let em in!");
}if (5 < 10) {
	console.log("5 is less than 10");
} else {
	console.log("5 is now bigger than 10")
}function lessThan100(a, b) {
  let sum;
  if (a + b >= 100) {
    result = false;
  } else {
    result = true;
  }
  return result;
}