20230831-数组求和 

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    <title>Document</title>
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    <script>
        function sum(arr) {
            var sum = 0;
            for (var i = 0; i < arr.length; i++) {
                sum += arr[i];
            }
            return sum;
        }
        var arr = [1, 2, 3, 4];
        console.log(sum(arr));
    </script>
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posted @ 2023-09-07 08:54  前端导师歌谣  阅读(15)  评论(0)    收藏  举报  来源