What are the key differences between == and === in JavaScript?

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In JavaScript, == and === are comparison operators, but they behave differently:

1. == (Equality Operator – Loose Equality)

  • Compares values for equality after type coercion (i.e., it converts the operands to the same type before comparing).

2. === (Strict Equality Operator)

  • Compares both value and type.

  • No type conversion happens.

Best Practice:

Use === by default to avoid unexpected behavior from type coercion. Reserve == only when you intentionally want type conversion.

Summary:
== allows type coercion, which can lead to unexpected results. === requires both value and type to match, making it safer and more predictable for comparisons.

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