循环多维UL以生成javascript数组

function flattenArray(arr) {
    let result = [];
    arr.forEach(item => {
        if (Array.isArray(item)) {
            result = result.concat(flattenArray(item));
        } else {
            result.push(item);
        }
    });
    return result;
}

const multiDimensionalArray = [1, [2, [3, 4], 5], 6];
const flatArray = flattenArray(multiDimensionalArray);
console.log(flatArray); // 输出: [1, 2, 3, 4, 5, 6]

const multiDimensionalArray = [1, [2, [3, 4], 5], 6];
const flatArray = multiDimensionalArray.flat(Infinity);
console.log(flatArray); // 输出: [1, 2, 3, 4, 5, 6]