使用javascript 打印九九乘法表

以下是使用 JavaScript 打印九九乘法表的代码：

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

运行上述代码，将会在控制台输出如下九九乘法表：

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