--- title: nor tags: math,logic,beginner unlisted: true --- Checks if none of the arguments are `true`. - Use the logical not (`!`) operator to return the inverse of the logical or (`||`) of the two given values. ```js const nor = (a, b) => !(a||b); ``` ```js nor(true, true); // false nor(true, false); // false nor(false, false); // true ```