效果图:
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title></title>
</head>
<script>
window.onload=function(){
for (var i = 1;i<10;i++) {
for(var j = 1;j<=i;j++){
document.write(" "+j+"*"+i+"="+(i*j));
}
document.write("<br>")
}
}
</script>
<body>
</body>
</html>