break：立即退出循环
<!DOCTYPE html>
<html>
<head lang="en">
<meta charset="UTF-8">
<title>break</title>
</head>
<body>
<script>
for(var a=1;a<=10;a++){
if(a%5==0){ //是否为5的倍数
break;
}
document.write(a+"<br />"); //这里输出结果1,2,3,4
}
</script>
</body>
</html>
continue：结束本次循环，继续开始下一次
<!DOCTYPE html>
<html>
<head lang="en">
<meta charset="UTF-8">
<title>continue</title>
</head>
<body>
<script>
for(var a=1;a<=10;a++){
if(a%5==0){ //是否为5的倍数
continue;
}
document.write(a+"<br />"); //这里输出结果1,2,3,4,6,7,8,9
}
</script>
</body>
</html>
