--- id: 56533eb9ac21ba0edf2244e0 title: Replacing If Else Chains with Switch challengeType: 1 --- ## Description
If you have many options to choose from, a switch statement can be easier to write than many chained if/else if statements. The following:
if (val === 1) {
  answer = "a";
} else if (val === 2) {
  answer = "b";
} else {
  answer = "c";
}
can be replaced with:
switch(val) {
  case 1:
    answer = "a";
    break;
  case 2:
    answer = "b";
    break;
  default:
    answer = "c";
}
## Instructions
Change the chained if/else if statements into a switch statement.
## Tests
```yml - text: You should not use any else statements anywhere in the editor testString: 'assert(!/else/g.test(code), ''You should not use any else statements anywhere in the editor'');' - text: You should not use any if statements anywhere in the editor testString: 'assert(!/if/g.test(code), ''You should not use any if statements anywhere in the editor'');' - text: You should have at least four break statements testString: 'assert(code.match(/break/g).length >= 4, ''You should have at least four break statements'');' - text: chainToSwitch("bob") should be "Marley" testString: 'assert(chainToSwitch("bob") === "Marley", ''chainToSwitch("bob") should be "Marley"'');' - text: chainToSwitch(42) should be "The Answer" testString: 'assert(chainToSwitch(42) === "The Answer", ''chainToSwitch(42) should be "The Answer"'');' - text: 'chainToSwitch(1) should be "There is no #1"' testString: 'assert(chainToSwitch(1) === "There is no #1", ''chainToSwitch(1) should be "There is no #1"'');' - text: chainToSwitch(99) should be "Missed me by this much!" testString: 'assert(chainToSwitch(99) === "Missed me by this much!", ''chainToSwitch(99) should be "Missed me by this much!"'');' - text: chainToSwitch(7) should be "Ate Nine" testString: 'assert(chainToSwitch(7) === "Ate Nine", ''chainToSwitch(7) should be "Ate Nine"'');' - text: chainToSwitch("John") should be "" (empty string) testString: 'assert(chainToSwitch("John") === "", ''chainToSwitch("John") should be "" (empty string)'');' - text: chainToSwitch(156) should be "" (empty string) testString: 'assert(chainToSwitch(156) === "", ''chainToSwitch(156) should be "" (empty string)'');' ```
## Challenge Seed
```js function chainToSwitch(val) { var 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; } // Change this value to test chainToSwitch(7); ```
## Solution
```js function chainToSwitch(val) { var 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; } ```