As applications grow, writing all JavaScript code in one file becomes hard to manage.
JavaScript modules allow you to split your code into multiple files and reuse functionality wherever needed.
Modules help keep code clean, organized, and easier to maintain — just like real-world professional projects.
Why Use JavaScript Modules
- Keeps code organized
- Makes large projects manageable
- Allows code reuse
- Improves readability
- Follows modern development standards
Almost every modern JavaScript application uses modules.
Here, the function is exported from one file so it can be used in another file.
The export keyword makes code reusable across files.
The import keyword brings the exported function into another file.
This allows code sharing without copying and pasting.
These examples show how JavaScript modules help organize and reuse code.
By mastering modules, students gain the ability to build large, professional, and maintainable JavaScript applications just like real-world developers.