使用函数打印出m乘法表
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<head>
<meta charset="UTF-8">
<title>Document</title>
</head>
<body>
<script type="text/javascript">
/* 使用函数打印出m乘法表 */
function cf (m) {
var str ="<table width='600' align='center' border='1'>";
for(var i = 1;i<=m; i++)
{
str+="<tr>";
for (var j= 1;j<=i; j++)
{
str+="<td>"+j+'×'+i+'='+(j*i)+"</td>";
}
str+="</tr>";
}
str+="</table>";
document.write(str);
}
var num=window.prompt();
cf(num);
</script>
</body>
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