1、九九乘法表--格式一：document.write("<table style='text-align: center;margin: 0 auto;' border='1' cellpadding='5'>"); document.write("<caption>九九乘法表--格式一</caption>"); for(var i = 1; i <= 9; i++) { document.write("<tr>"); for(var j = 1 ; j <= 9; j++) { console.log(i+"*"+ j + "=" +(i*j)) document.write("<td>" + i+"*"+ j + "=" +(i*j)+"</td>") } document.write("</tr>"); } document.write("</table>");
2、九九乘法表--格式二：document.write("<table style='text-align: center;margin: 0 auto;' border='1' cellpadding='5'>"); document.write("<caption>九九乘法表--格式二</caption>"); for(var i = 1; i <= 9; i++) { document.write("<tr>"); for(var j = 1 ; j <= i; j++) { document.write("<td>" + i+"*"+ j + "=" +(i*j)+"</td>") } document.write("</tr>"); } document.write("</table>");
3、九九乘法表--格式三：document.write("<table style='text-align: center;margin: 0 auto;' border='1' cellpadding='5'>"); document.write("<caption>九九乘法表--格式三</caption>"); for(var i = 9; i >= 1; i--) { document.write("<tr>"); for(var j = 1 ; j <= i; j++) { document.write("<td>" + i+"*"+ j + "=" +(i*j)+"</td>") } document.write("</tr>"); } document.write("</table>");