<!DOCTYPE html>
<html lang="en">
<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>Document</title>
<script>
function getSum(num1,num2){
var sum = 0;
for(var i = num1; i <= num2; i++){
sum += i;
}
console.log(sum);
}
getSum(1,100);
</script>
</head>
<body>
</body>
</html>