JS Practice — Built-in Objects

Math.trunc() — trunc(-0.1) = -0

📖 Usage Example

// Remove fractional part (truncates towards zero)
Math.trunc(4.9)    // → 4
Math.trunc(-4.9)   // → -4

Use Math.trunc() to drop the decimal part of a number, always truncating towards zero unlike Math.floor().

Math.trunc()

Returns the integer part of a number by removing any fractional digits.

Challenge: Explore that Math.trunc(-0.1) returns -0, distinguishable via Object.is.

💡 Hints (1)