copySign javascript Code Snippet in 2025
mathbeginner
Last Updated: 26 October 2025
Returns the absolute value of the first number, but the sign of the second.
- Use
Math.sign()to check if the two numbers have the same sign. - Return
xif they do,-xotherwise.
const copySign = (x, y) => Math.sign(x) === Math.sign(y) ? x : -x;copySign(2, 3); // 2
copySign(2, -3); // -2
copySign(-2, 3); // 2
copySign(-2, -3); // -2javascript snippet similar to copySign For You in October 2025
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