59、函数封装求和案例

2024-10-04 / 0 评论 / 3 阅读 / 正在检测是否收录...

10/04

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
</head>
<body>
    <script>
        // 1、封装函数
        // 给一个参数的默认值
        function getArrSum(arr)  {
            // console.log(arr)
            let sum = 0
            for(let i = 0; i < arr.length; i++){
                sum += arr[i]
            }
            console.log(sum)
        }
        getArrSum([1,2,3,4,5])
        getArrSum([11,22,33,44,55])
    </script>
</body>
</html>

JavaScript