Export Const Vs Export Default In Es6

When working with modules in ES6 JavaScript, you may come across the terms `export const` and `export default`. These two ways of exporting modules can sometimes confuse developers, so let's break down the difference between them to help you understand when to use each one.

`export const` is used when you want to export a named constant from a module. This means that when you import this module into another file, you will need to reference this constant by its name. For example, if you have a file called `myConstants.js` that contains the following code:

export const PI = 3.14;
export const MY_CONSTANT = "Hello, World!";

To use these constants in another file, you would import them like this:

import { PI, MY_CONSTANT } from './myConstants';
console.log(PI); // Output: 3.14
console.log(MY_CONSTANT); // Output: Hello, World!

On the other hand, `export default` is used when you want to export a single value, function, or class as the default export of a module. This means that when you import this module into another file, you can choose to import this default export with any name you like. For example, if you have a file called `myFunction.js` that contains the following code:

export default function greet(name) {
  return `Hello, ${name}!`;
}

You can import and use this default export in another file like this:

import myGreeting from './myFunction';
console.log(myGreeting('Alice')); // Output: Hello, Alice!

In summary, `export const` is used for exporting named constants, while `export default` is used for exporting a single default value, function, or class. Understanding this distinction can help you structure your code more effectively and avoid confusion when working with ES6 modules.

Remember that you can have multiple `export const` statements in a single file, but only one `export default` statement. Additionally, when importing modules, you can mix and match named exports with default exports as needed.

By grasping the difference between `export const` and `export default` in ES6, you'll be better equipped to organize your code and leverage the benefits of modularization in your JavaScript projects.