multiple-catch.js

function formatNameAndEmail(name, email) {
  if (typeof name !== "string" || typeof email !== "string") {
    throw "InputIsNotString";
  } else if (formatNameAndEmail.arguments.length > 2) {
    throw "ArgumentsTooLong";
  } else {
    return name + " <" + email + ">";
  }
}

try {
  var s = formatNameAndEmail("John Doe", "[email protected]", "Jane Doe", "[email protected]");
} catch (e if e === "InputIsNotString") {
  console.log("Input is not string.");
} catch (e if e === "ArgumentsTooLong") {
  console.log("Argument is too long.");
} catch (e) {
  console.log("Unknown error:" + e);
}