代码示例:(标识:jsck_reduce_1)
<!DOCTYPE html>
<html>
<body>

<h1>JavaScript 数组</h1>

<p>从左边开始减去数组中的数字:</p>

<p id="demo"></p>

<script>
const numbers = [175, 50, 25];
document.getElementById("demo").innerHTML = numbers.reduce(myFunc);

function myFunc(total, num) {
  return total - num;
}
</script>

</body>
</html>
运行结果: