JavaScript

Error Handling

const JSONString = '{ "username": "sam.smith", "password": "654321" }';
const inputData = JSON.parse(JSONString);

if (inputData.username === "sam.smith" && inputData.password === "123456") {
  console.log("You are logged in successfully");
} else {
  console.log("Invalid credentials");
}

const JSONString = '{ "username": "sam.smith", "password": "654321" }';
const inputData = JSON.parse(JSONString);

if (inputData.username === "sam.smith" && inputData.password === "123456") {
  console.log("You are logged in successfully");
} else {
  throw "Invalid credentials";
}

try {
  const JSONString = '{ "username": "sam.smith", "password": "654321" }';
  const inputData = JSON.parse(JSONString);

  if (inputData.username === "sam.smith" && inputData.password === "123456") {
    console.log("You are logged in successfully");
  } else {
    throw "Invalid credentials";
  }
} catch (error) {
  console.log(typeof error);
  console.log(error);
}

try {
  const JSONString = '{ "username": "sam.smith", "password": "654321" }';
  const inputData = JSON.parse(JSONString);

  if (inputData.username === "sam.smith" && inputData.password === "123456") {
    console.log("You are logged in successfully");
  } else {
    throw new Error("Invalid credentials");
  }
} catch (error) {
  console.log(typeof error);
  console.log(error.name);
  console.log(error.message);
}