<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title></title>
</head>
<body>
</body>
<script type="text/javascript">
var n=1
var sum=0
while(n<=100 || n%2==0){
sum+=n;
n+=2;
}
alert(sum)
</script>
</html>
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title></title>
</head>
<body>
</body>
<script type="text/javascript">
var n=1
var sum=0
while(n<=100 || n%2==0){
sum+=n;
n+=2;
}
alert(sum)
</script>
</html>