js写九九乘法表的不同写法
①九九乘法表
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<meta http-equiv="X-UA-Compatible" content="ie=edge">
<title>Document</title>
</head>
<body>
<script>
for(var i=1;i<=9;i++){
for(var j=1;j<=i;j++){
document.write(j+"*"+i+"="+i*j);
}
document.write("<br/>")
}
document.write("<br/>")
</script>
</body>
</html>
显示结果如下：
②乘法口诀表表格形式
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<meta http-equiv="X-UA-Compatible" content="ie=edge">
<title>Document</title>
<style type="text/css">
table{
border-top:0;
border-right:0;
}
</style>
</head>
<body>
<script>
document.write("<table border=1 cellpadding=0 cellspacing=0>");
for (var i = 1; i <= 9; i++) {
document.write("<tr>");
for (var j = 1; j <= i; j++) {
document.write("<td>");
document.write(j + " * " + i + "=" + i * j);
document.write("</td>");
}
document.write("</tr>");
}
document.write("</table>");
</script>
</body>
</html>
显示结果如下：
