<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title></title>
<script>
var num = 0；
//count：计数器
count = 0;
for(n = 1 ; n <= 100 ; n++){
if(n%7 == 0){
num = num + n;
count++;
}
}
alert("num = " + num);
alert("个数 = " + count);
</script>
</head>
<body>
</body>
</html>
