The world's cleanest switch statement.

gistfile1.txt

This is how regular switches are typically made:

function regularSwitch(case) {
  switch(case) {
    case "default":
      return "green";
    case "ignored":
      return "red";
     case "selected";
      return "grey";
     default:
      return undefined;
  }
}

This is a slightly cleaner way to write simple mapping switch:

function simpleSwitch(case) {
  return {
    "default": "green",
    "ignored": "red",
    "selected": "grey",
  }[case];
}