Compute cross product of 2 3D arrays #JavaScript #math #array

crossProduct.js

function crossProduct(arr1, arr2) {
    /*
     Here arr1, arr2 are both 1D arrays.
     */
    let u1 = arr1[0];
    let u2 = arr1[1];
    let u3 = arr1[2];
    let v1 = arr2[0];
    let v2 = arr2[1];
    let v3 = arr2[2];
    return [u2 * v3 - u3 * v2, u3 * v1 - u1 * v3, u1 * v2 - u2 * v1];
}