<!DOCTYPE html>
<html lang="ja">
<head>
<meta charset="UTF-8" />
<title>多重ループ</title>
</head>
<body>
<h1>多重ループ</h1>
<script>
for(var i = 0; i < 10; i++){
for(var j = 0; j < 10; j++){
document.write( '[' + i + j +']');
}
document.write('<br>');
}
</script>
<hr>
<script>
for(i = 9; i >= 0; i--){
for(j = 0; j < i; j++){
document.write( '[' + i + j +']');
}
document.write('<br>');
}
</script>
<hr>
<script>
for(i = 9; i >= 0; i--){
for(j = 9; j > i; j--){
document.write( '[' + i + j +']');
}
document.write('<br>');
}
</script>
</body>
</html>