complement javascript Code Snippet in 2025
functionlogicbeginner
Last Updated: 30 October 2025
Returns a function that is the logical complement of the given function, fn.
- Use the logical not (
!) operator on the result of callingfnwith any suppliedargs.
const complement = fn => (...args) => !fn(...args);const isEven = num => num % 2 === 0;
const isOdd = complement(isEven);
isOdd(2); // false
isOdd(3); // truejavascript snippet similar to complement For You in November 2025
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