如何获取forEach循环中的值的索引？

Question

Absolutely NewBee

How Can I find out the index of the value and not the value itself inside forEach loop Currently I have following code which just gives my the value of userAnswers :

    correctAnswers: [], // [1, 2, 3, 1, 2, 1, 3, 3, 4, 3]
    userAnswers: [],    // [1, 2, 1, 1, 2, 1, 3, 3, 4, 3]

    let tempArr = [];
    const findingTotal = userAnswers.forEach(
        (value, index) =>
            value === correctAnswers[index]
                ? (Total += 1)
                : tempArr.push(value)
    );

In the above example I want to get index which is 2 and not the value (1) itself ?

Answer 1

correctAnswers: [], // [1, 2, 3, 1, 2, 1, 3, 3, 4, 3]
userAnswers: [],    // [1, 2, 1, 1, 2, 1, 3, 3, 4, 3]

let tempArr = [];
let Total = 0; 
userAnswers.forEach(
    (value, index) =>
        value === correctAnswers[index]
            ? (Total += 1)
            : tempArr.push(index)
);

tempArr.push(index) , findingTotal is not used too