<p>我们有一组数字:4, 8, 6,
2。点击按钮查看它们的平均数!</p>
<div class="number-box">4</div>
<div class="number-box">8</div>
<div class="number-box">6</div>
<div class="number-box">2</div>
<button onclick="calculateAverage()">计算平均数
</button>
<div class="result" id="result"></div>
function calculateAverage() {
const numbers = [4, 8, 6, 2];
const sum = numbers.reduce((acc, num) => acc + num
, 0);
const average = sum / numbers.length;
document.getElementById('result').innerText =
`这组数字的平均数是:${average}`;