js function 取最大值 冒泡排序 数组反转 闰年 

<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <meta http-equiv="X-UA-Compatible" content="ie=edge">
    <title>Document</title>
    <style>

    </style>
</head>

<body>
    <div class="container">
    </div>
    <script>
        function getMax() {
            let max = arguments[0]
            for (var i = 1; i < arguments.length; i++) {
                if (arguments[i] > max) {
                    max = arguments[i]
                }
            }
            return max
        }

        function arrReverse() {
            let newArr = []
            for (let j = arguments.length - 1; j >= 0; j--) {
                newArr[arguments.length - j - 1] = arguments[j]
            }
            return newArr
        }

        function arrSort() {
            for (var i = 0; i < arguments.length - 1; i++) {
                for (var j = 0; j < arguments.length - i - 1; j++) {
                    if (arguments[j] > arguments[j + 1]) {
                        var temp = arguments[j]
                        arguments[j] = arguments[j + 1]
                        arguments[j + 1] = temp
                    }
                }
            }
            return arguments
        }

        function isRuiYear(year) {
            var flag = false
            if ((year % 4 == 0 && year % 100 != 0) || year % 400 == 0) {
                flag = true
            }
            return flag
        }

        function get2Mdays(year) {
            return isRuiYear(year) ? 29 : 28
        }
        console.log(arrReverse(3, 4, 56, 2, 123, 12, 12))
        console.log(getMax(23, 323, 645, 34, 1234, 35))
        console.log(arrSort(23, 323, 645, 34, 1234, 35))
        console.log(isRuiYear(2000))
        console.log(get2Mdays(2000))
        console.log(get2Mdays(1994))
    </script>
</body>

</html>

 

posted @ 2020-05-07 15:10  howhy  阅读(84)  评论(0)    收藏  举报