📅  最后修改于: 2022-03-11 15:03:25.849000             🧑  作者: Mango
let arr = [
[1,2], [3,4], [5,6]
];
for (let i=0; i < arr.length; i++) {
for (let j=0; j < arr[i].length; j++) {
console.log(arr[i][j]);
}
}