juniorJavaScript
Difference between == and ===
Updated May 6, 2026
Short answer
== allows type coercion, === does not.
Deep explanation
=== checks value and type strictly, preventing implicit conversion.
Real-world example
Use === in production to avoid bugs.
Common mistakes
- Using == unintentionally causing type coercion bugs.
Follow-up questions
- What is type coercion?
- Why prefer strict equality?