案例：javascript案例     状态：可编辑再运行    进入竖版
 运行结果　
​x
 
1
<!DOCTYPE html>
2
<html>
3
<body>
4
​
5
<script>
6
cars=["BMW","Volvo","Saab","Ford"];
7
list:
8
{
9
document.write(cars[0] + "<br>");
10
document.write(cars[1] + "<br>");
11
document.write(cars[2] + "<br>");
12
break list;
13
document.write(cars[3] + "<br>");
14
document.write(cars[4] + "<br>");
15
document.write(cars[5] + "<br>");
16
}
17
</script>
18
​
19
</body>
20
</html>
21
​