JavaScript Modules vs IIFE

Developers should learn JavaScript Modules to build scalable, maintainable applications by modularizing code, which improves collaboration and testing meets developers should use iife when they need to execute code immediately upon script load, such as for initialization tasks or to create isolated scopes that protect variables from global interference. Here's our take.

JavaScript Modules

Nice Pick

Developers should learn JavaScript Modules to build scalable, maintainable applications by modularizing code, which improves collaboration and testing

Pros

• They are essential for modern web development with frameworks like React or Vue, and for Node
• Related to: es6, node-js

Cons

• Specific tradeoffs depend on your use case

IIFE

Developers should use IIFE when they need to execute code immediately upon script load, such as for initialization tasks or to create isolated scopes that protect variables from global interference

Pros

• It is particularly useful in older JavaScript environments without native module systems (like ES6 modules) to implement modular patterns and avoid naming collisions in large applications
• Related to: javascript, closures

Cons

• Specific tradeoffs depend on your use case

The Verdict

Use JavaScript Modules if: You want they are essential for modern web development with frameworks like react or vue, and for node and can live with specific tradeoffs depend on your use case.

Use IIFE if: You prioritize it is particularly useful in older javascript environments without native module systems (like es6 modules) to implement modular patterns and avoid naming collisions in large applications over what JavaScript Modules offers.

The Bottom Line

JavaScript Modules wins

Developers should learn JavaScript Modules to build scalable, maintainable applications by modularizing code, which improves collaboration and testing