JavaScript Comparison Operators

Comparison operators in JavaScript are used to compare two values. These comparisons return a Boolean value: either true or false. They are essential for controlling program flow using if, else, switch, and loop conditions.

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Common JavaScript Comparison Operators

Operator	Name	Description
==	Equal to	Returns true if values are equal (loose)
===	Strict equal to	Returns true if values and types match
!=	Not equal to	Returns true if values are not equal
!==	Strict not equal to	Returns true if values or types differ
>	Greater than	Returns true if left is greater
<	Less than	Returns true if left is smaller
>=	Greater than or equal to	Returns true if left >= right
<=	Less than or equal to	Returns true if left <= right

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Example: Comparison Operators in JavaScript

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Loose vs Strict Equality

• == compares only values, ignoring data types.
• === compares both values and data types.

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When to Use Each Operator

• Use === and !== in modern JavaScript to avoid type coercion.
• Use <, >, <=, >= to compare numeric values or dates.
• Use == only when you understand and require type conversion flexibility.

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Key Takeaways

• Comparison operators return Boolean values (true or false).
• Prefer strict equality (===, !==) to avoid unexpected type coercion.
• Use comparison operators to control logic in conditionals and loops.
• Misusing == can introduce subtle bugs—understand JavaScript's type coercion rules.