代码:
<!DOCTYPE html>
<html lang="zh">
<head>
<meta charset="UTF-8" />
<meta name="viewport" content="width=device-width, initial-scale=1.0" />
<meta http-equiv="X-UA-Compatible" content="ie=edge" />
<title>打印1-100之间所有7的倍数的个数及总和</title>
<script type="text/javascript">
var sum = 0,count = 0;
for(var i = 1;i <= 100;i++){
if(i % 7 == 0){
console.log(i);
sum+=i;
count+=1;
}
}
console.log("7的倍数的个数:" + count);
console.log("7的倍数的总和:" + sum);
</script>
</head>
<body>
</body>
</html>
运行结果: