[text]
<script>
// 条件分岐（switch）
var direction = "right";
var x, y;
switch (direction) {
case "right":
x = x + 10;
break;
case "left":
x = x – 10;
break;
case "up":
y = y – 10;
break;
case "down":
y += 10; // y = y + 10
break;
default:
// 例外処理
break;
}
</script>[/text]