How do I declare a variable in JavaScript

In JavaScript, you can declare a variable using the keywords `var`, `let`, or `const`. Each of these keywords has different characteristics and use cases.

JavaScript variable declaration, var, let, const

This example demonstrates how to declare variables using `var`, `let`, and `const` in JavaScript.


                // Declaring variables
        var name = "John"; // var - function scoped or global
        let age = 30;      // let - block scoped
        const PI = 3.14;  // const - block scoped and read-only

        console.log(name); // Output: John
        console.log(age);  // Output: 30
        console.log(PI);   // Output: 3.14