html
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Document</title>
</head>
<body>
<script src="./1.js"></script>
</body>
</html>
js
for(var a=1; a<=9;a++){
for (var b=1;b<=a;b++){
document.write(a + "*"+ b + "="+(a * b )+" ");
}
document.write("<br>")
}
int ,j,k;