In JavaScript, data comes in various types, such as numbers, strings, booleans, arrays, and objects. Let's break it down.First up, we have numbers. They can be integers or floating-point numbers. Here's how you declare a number variable: let number = 10;.[Display code example: let string = Hello, world!;]Speaker: Next, we have strings, which are sequences of characters enclosed in quotes. Here's an example: let string = 'Hello, world!';.Booleans represent true or false values. You declare a boolean variable like this: let isTrue = true;.Arrays are used to store multiple values in a single variable. Here's how you create an array: let fruits = ['apple', 'banana', 'orange'];.[Display code example: let person = { name: John, age: 30 };]Lastly, objects allow you to store key-value pairs. Here's an example of an object: let person = { name: 'John', age: 30 };.Now that you've seen these examples, remember, JavaScript gives you the power to work with various types of data using variables. You can manipulate, store, and retrieve data to create dynamic and interactive web experiences.