javaScript99乘法表

9*9|表格

document.write('<table border="1" frame="void">');
        for(var a=1;a< 10;a++){
            document.write('<tr>');
            for(var b=1;b< 10; b++){
                var c = a * b;
                document.write( '<td>'+a + '*' + b +'=' +c+'</td>');
            }
            document.write('</tr>');
        }
        document.write('</table>');

9*9表格

9*9|直角三角形

document.write('<table border="1" frame="void">');
      for (var a = 1; a < 10; a++) {
        document.write("<tr>");
        for (var b = 1; b <= a; b++) {
          var c = a * b;
          document.write("<td>" + a + "*" + b + "=" + c + "</td>");
        }
        document.write("</tr>");
      }
      document.write("</table>");

9*9直角三角形

9*9|金字塔

for (var a = 1; a <= 9; a++) {
        document.write("<div>");
        for (var non = 1; non <= 10 - a; non++) {
          document.write("&nbsp&nbsp&nbsp&nbsp&nbsp&nbsp");
        }
        for (var b = 1; b <= a; b++) {
          var c = a * b;
          document.write(a + "*" + b + "=" + c + "&nbsp");
        }
        document.write("</div>");
      }
      document.write("</div>");

9*9金字塔