When working with JavaScript, it’s common to come across situations where you need to handle multiple data types. One way to handle these scenarios is by using ternary operations, which allow you to conditionally assign a value based on the evaluation of a condition. This can be especially useful when you need to handle different data types, such as numbers, strings, booleans, or objects.

Let’s take a look at some examples of how ternary operations can be used to handle multiple data types in JavaScript.

Example 1: Handling Numbers

const number = 10;
const result = typeof number === 'number' ? number * 2 : 'Invalid input';
console.log(result);  // Output: 20

In this example, we use the typeof operator to check if the number variable is of type 'number'. If it is, we multiply the number by 2. Otherwise, we assign the string 'Invalid input' to the result variable.

Example 2: Handling Strings

const name = 'John';
const greeting = `Hello, ${typeof name === 'string' ? name : 'Stranger'}!`;
console.log(greeting);  // Output: Hello, John!

In this case, we use a template literal to create a greeting message. The condition inside the ternary operation checks if name is of type 'string'. If it is, we include the name in the greeting. Otherwise, we use the string 'Stranger'.

Example 3: Handling Booleans

const loggedIn = true;
const message = loggedIn ? 'Welcome back!' : 'Please log in.';
console.log(message);  // Output: Welcome back!

Here, we use the boolean value of loggedIn to determine the message to display. If loggedIn is true, we show the welcome message; otherwise, we prompt the user to log in.

Example 4: Handling Objects

const user = { name: 'Jane', age: 25, isAdmin: true };
const adminStatus = user.isAdmin ? 'Admin' : 'User';
console.log(adminStatus);  // Output: Admin

In this example, we have an isAdmin property inside the user object. The ternary operation evaluates the value of user.isAdmin and assigns either 'Admin' or 'User' to the adminStatus variable depending on the result.

Using ternary operations allows you to handle multiple data types in a concise and readable way. By leveraging these conditional expressions, you can write more flexible and robust JavaScript code.

#JavaScript #TernaryOperations