在forEach循环中需要或导入

const array = [1, 2, 3, 4, 5];

array.forEach((element, index, array) => {
  console.log(`Element ${element} at index ${index} in array ${array}`);
});

Element 1 at index 0 in array 1,2,3,4,5
Element 2 at index 1 in array 1,2,3,4,5
Element 3 at index 2 in array 1,2,3,4,5
Element 4 at index 3 in array 1,2,3,4,5
Element 5 at index 4 in array 1,2,3,4,5