九九乘法表 javascript

以下是使用 JavaScript 编写的九九乘法表：

for (var i = 1; i <= 9; i++) {
  var row = "";
  for (var j = 1; j <= i; j++) {
    row += j + " x " + i + " = " + (i*j) + "  ";
  }
  console.log(row);
}

运行上述代码，将输出以下结果：

1 x 1 = 1
1 x 2 = 2  2 x 2 = 4
1 x 3 = 3  2 x 3 = 6  3 x 3 = 9
1 x 4 = 4  2 x 4 = 8  3 x 4 = 12  4 x 4 = 16
1 x 5 = 5  2 x 5 = 10  3 x 5 = 15  4 x 5 = 20  5 x 5 = 25
1 x 6 = 6  2 x 6 = 12  3 x 6 = 18  4 x 6 = 24  5 x 6 = 30  6 x 6 = 36
1 x 7 = 7  2 x 7 = 14  3 x 7 = 21  4 x 7 = 28  5 x 7 = 35  6 x 7 = 42  7 x 7 = 49
1 x 8 = 8  2 x 8 = 16  3 x 8 = 24  4 x 8 = 32  5 x 8 = 40  6 x 8 = 48  7 x 8 = 56  8 x 8 = 64
1 x 9 = 9  2 x 9 = 18  3 x 9 = 27  4 x 9 = 36  5 x 9 = 45  6 x 9 = 54  7 x 9 = 63  8 x 9 = 72  9 x 9 = 81