JavaScript break跳出多层循环

标志flag：
for1
      for2
      for3
           break flag;   //continue
flag;   把标志对应的for循环给做跳出操作

代码

<script type="text/javascript">
var i=1;
computer:
while(true){
i++;
switch(i){
case 5:
console.log(i);
break
case 10:
console.log(i);
break;
case 15:
console.log(i);
break computer;
}
}
</script>
运行结果