JS Practice — Built-in Objects

Number.EPSILON — floating point addition problem

📖 Usage Example

// Use EPSILON to compare floats safely
0.1 + 0.2 === 0.3   // → false (floating-point issue)
Math.abs(0.1 + 0.2 - 0.3) < Number.EPSILON   // → true

Use Number.EPSILON as a tolerance threshold when comparing floating-point numbers that may differ by tiny rounding errors.

Floating Point Addition

In JavaScript, 0.1 + 0.2 !== 0.3 due to floating-point representation.

0.1 + 0.2 === 0.3  // → false!

💡 Hints (1)

• Floating point arithmetic is not exact; `Number.EPSILON` helps you define a tolerance.