1.多维数组取其所有第几个值组成新数组 例如 [[, , ], [, , ], [, , ]],我要标红的值 [[1, 3, 5], [2, 2, 2], [3, 3, 3]] let t = [[1, 2, 3], [3, 2, 3], [5, 2, 3]]; let zsz = []; let leng = t[0].length; let num = 0; // while (num < leng) { // zsz.push([]); // for (let i = 0; i < t.…