freeCodeCamp/curriculum/challenges/arabic/02-javascript-algorithms-and-data-structures/basic-javascript/replacing-if-else-chains-with-switch.md

id, title, challengeType, videoUrl, forumTopicId, dashedName

id	title	challengeType	videoUrl	forumTopicId	dashedName
56533eb9ac21ba0edf2244e0	استبدال عبارات if/else المتسلسلة بعبارة switch	1	https://scrimba.com/c/c3JE8fy	18266	replacing-if-else-chains-with-switch

--description--

إذا كان لديك العديد من الخيارات التي يجب الاختيار بينها، عبارة switch قد تكون أسهل في الكتابة من سلسلة طويلة من عبارات if/else if. التالي:

if (val === 1) {
  answer = "a";
} else if (val === 2) {
  answer = "b";
} else {
  answer = "c";
}

يمكن استبداله بما يلي:

switch (val) {
  case 1:
    answer = "a";
    break;
  case 2:
    answer = "b";
    break;
  default:
    answer = "c";
}

--instructions--

قم بتغيير سلسلة if/else if إلى switch.

--hints--

لا يجب عليك استخدام أي else في أي مكان في المحرر

assert(!/else/g.test(code));

لا يجب عليك استخدام أي if في أي مكان في المحرر

assert(!/if/g.test(code));

يجب أن يكون لديك على الأقل ٤ عبارات break

assert(code.match(/break/g).length >= 4);

chainToSwitch("bob") should return the string Marley

assert(chainToSwitch('bob') === 'Marley');

chainToSwitch(42) should return the string The Answer

assert(chainToSwitch(42) === 'The Answer');

chainToSwitch(1) should return the string There is no #1

assert(chainToSwitch(1) === 'There is no #1');

chainToSwitch(99) should return the string Missed me by this much!

assert(chainToSwitch(99) === 'Missed me by this much!');

chainToSwitch(7) should return the string Ate Nine

assert(chainToSwitch(7) === 'Ate Nine');

chainToSwitch("John") should return "" (empty string)

assert(chainToSwitch('John') === '');

chainToSwitch(156) should return "" (empty string)

assert(chainToSwitch(156) === '');

--seed--

--seed-contents--

function chainToSwitch(val) {
  let answer = "";
  // Only change code below this line

  if (val === "bob") {
    answer = "Marley";
  } else if (val === 42) {
    answer = "The Answer";
  } else if (val === 1) {
    answer = "There is no #1";
  } else if (val === 99) {
    answer = "Missed me by this much!";
  } else if (val === 7) {
    answer = "Ate Nine";
  }

  // Only change code above this line
  return answer;
}

chainToSwitch(7);

--solutions--

function chainToSwitch(val) {
  let answer = "";

  switch (val) {
    case "bob":
      answer = "Marley";
      break;
    case 42:
      answer = "The Answer";
      break;
    case 1:
      answer = "There is no #1";
      break;
    case 99:
      answer = "Missed me by this much!";
      break;
    case 7:
      answer = "Ate Nine";
  }
  return answer;
}