[ES6] 17. funtion if else return

 

[ES6] 17. funtion if  else return

 

function sadsa() {
  let age = prompt("Enter your age:");
   if (!age) {
    return "Please enter your age.";
  } else {
    let result = "";
     if (age === "10") {
      result = "You are in your 10s.";
    } else if (age === "20") {
      result = "You are in your 20s.";
    } else if (age === "30") {
      result = "You are in your 30s.";
    } else {
      result = "You are in another age group.";
    }
    return result;
  }
}
 alert(sadsa());

10입력시,

 

js, if문과 switch문 같이 쓰기,

`function sadsa() {
  let age = prompt("Enter your age:");
  if (!age) {
    return "Please enter your age.";
  }
   let result = "";
  switch (age) {
    case "10":
      result = "You are in your 10s.";
      break;
    case "20":
      result = "You are in your 20s.";
      break;
    case "30":
      result = "You are in your 30s.";
      break;
    default:
      result = "You are in another age group.";
      break;
  }
   return result;
}
 alert(sadsa());

10입력시ㅡ,