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What's the Difference Between `==` and `===` in JavaScript?

Susan Sarandon
Release: 2024-12-17 13:34:14
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What's the Difference Between `==` and `===` in JavaScript?

Distinguishing between == and === in JavaScript

In JavaScript, the equality operator, ==, compares two values for equality, considering only their values. However, the strict equality operator, ===, compares both the values and the types of the operands. This distinction is particularly important in scenarios where type coercion can occur, leading to unexpected results.

0 == false   // true
0 === false  // false
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Furthermore, JavaScript also has inequality operators:

  • !=: Compares two values for inequality, considering only their values.
  • !==: Compares two values for inequality, considering both their values and types.

Understanding these operators is crucial for writing reliable and predictable code.

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