freeCodeCamp/curriculum/challenges/english/02-javascript-algorithms-and-data-structures/basic-javascript/selecting-from-many-options-with-switch-statements.english.md

id, title, challengeType

id	title	challengeType
56533eb9ac21ba0edf2244dd	Selecting from Many Options with Switch Statements	1

Description

If you have many options to choose from, use a switch statement. A switch statement tests a value and can have many case statements which define various possible values. Statements are executed from the first matched case value until a break is encountered. Here is a pseudocode example:

switch(num) {
  case value1:
    statement1;
    break;
  case value2:
    statement2;
    break;
...
  case valueN:
    statementN;
    break;
}

case values are tested with strict equality (===). The break tells JavaScript to stop executing statements. If the break is omitted, the next statement will be executed.

Instructions

Write a switch statement which tests val and sets answer for the following conditions:
1 - "alpha"
2 - "beta"
3 - "gamma"
4 - "delta"

Tests

tests:
  - text: <code>caseInSwitch(1)</code> should have a value of "alpha"
    testString: assert(caseInSwitch(1) === "alpha", '<code>caseInSwitch(1)</code> should have a value of "alpha"');
  - text: <code>caseInSwitch(2)</code> should have a value of "beta"
    testString: assert(caseInSwitch(2) === "beta", '<code>caseInSwitch(2)</code> should have a value of "beta"');
  - text: <code>caseInSwitch(3)</code> should have a value of "gamma"
    testString: assert(caseInSwitch(3) === "gamma", '<code>caseInSwitch(3)</code> should have a value of "gamma"');
  - text: <code>caseInSwitch(4)</code> should have a value of "delta"
    testString: assert(caseInSwitch(4) === "delta", '<code>caseInSwitch(4)</code> should have a value of "delta"');
  - text: You should not use any <code>if</code> or <code>else</code> statements
    testString: assert(!/else/g.test(code) || !/if/g.test(code), 'You should not use any <code>if</code> or <code>else</code> statements');
  - text: You should have at least 3 <code>break</code> statements
    testString: assert(code.match(/break/g).length > 2, 'You should have at least 3 <code>break</code> statements');

Challenge Seed

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



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

// Change this value to test
caseInSwitch(1);

Solution

function caseInSwitch(val) {
  var answer = "";

  switch(val) {
    case 1:
      answer = "alpha";
      break;
    case 2:
      answer = "beta";
      break;
    case 3:
      answer = "gamma";
      break;
    case 4:
      answer = "delta";
  }
  return answer;
}