三维Javascript数组

var threeDArray = [
  [
    [1, 2, 3],
    [4, 5, 6],
    [7, 8, 9]
  ],
  [
    [10, 11, 12],
    [13, 14, 15],
    [16, 17, 18]
  ],
  [
    [19, 20, 21],
    [22, 23, 24],
    [25, 26, 27]
  ]
];

for (var i = 0; i< threeDArray.length; i++) {
  for (var j = 0; j< threeDArray[i].length; j++) {
    for (var k = 0; k< threeDArray[i][j].length; k++) {
      console.log(threeDArray[i][j][k]);
    }
  }
}