
循環(huán)

循環(huán)

ATM機
代碼區(qū)
- 求1-100之間所有數(shù)的總和和平均值
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>求1-100之間所有數(shù)的總和和平均值</title>
<script>
var sum = 0;
// 1. for
for (i = 1; i <= 100; i++) {
sum += i;
}
var average = sum / i;
console.log(sum);
console.log(average);
// while
var j = 1;
var summ = 0;
while (j <= 100) {
summ += j;
j++;
}
console.log(summ);
// 3. do ...while
var k = 1;
var s = 0;
do {
s += k;
k++;
} while (k <= 100);
console.log(s);
</script>
</head>
<body>
</body>
</html>