JavaScript 计算 1 到 100 之间偶数和及 7 的倍数和
<!DOCTYPE html>
<html>
<head>
<title>JavaScript 计算 1 到 100 之间偶数和及 7 的倍数和</title>
</head>
<body>
<h1>计算 1 到 100 之间偶数和</h1>
<script>
var sum = 0;
for (var i = 2; i <= 100; i += 2) {
sum += i;
}
document.write('The sum of even numbers from 1 to 100 is: ' + sum);
</script>
<h1>计算 1 到 100 之间 7 的倍数和</h1>
<script>
var count = 1;
var sum = 0;
while (count <= 100) {
if (count % 7 === 0) {
sum += count;
}
count++;
}
document.write('The sum of numbers divisible by 7 from 1 to 100 is: ' + sum);
</script>
</body>
</html>
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