Fusion Fn: Nicola DjReez Rizzi > JavaScript Developer Italiani

/**
 * DEFINITION
 * @param [unknown] listA
 * @param [unknown] listB
 */
function combo(listA, listB) {
    if (!Array.isArray(listA)) throw new Error("listA in NOT an array!");
    if (!Array.isArray(listB)) throw new Error("listB in NOT an array!");
    if (listA.length !== listB.length) throw new Error("listA and listB have different length!");

    const result = []
    listA.forEach((elA, idx) => {
        result.push(elA, listB[idx])
    })
    return result;
}

// IMPLEMENTATION with some failure cases and  one success

try {
    var fusion = combo(1, ["A"]);
    console.log(fusion);
} catch (error) {
    console.warn(error);
}
try {
    var fusion = combo([1], "A");
    console.log(fusion);
} catch (error) {
    console.warn(error);
}

try {
    var fusion = combo([1, 2, 3], ["a", "b"]);
    console.log(fusion);
} catch (error) {
    console.warn(error);
}

var letters = ['b','c','d','e','f']
var numbers = [2,3,4,5,6]

try {
    var fusion = combo(letters, numbers);
    console.log(fusion);
} catch (error) {
    console.error(error);
}