test.html

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

<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>

</head>

<body>
    <script src='./JavaScript/通用样式js.js'></script>
    <script>
        let str = '18812340303'
        let str1 = '320923199901010011'
        //字符串马赛克  18899992929  188****2929
        String.prototype.mosaic = function () {
            if (this.length === 11) {
                return this.replace(this.substr(3, 4), '*'.repeat(4))
            } else (this.length === 18)
            return this.replace(this.substr(6, 8), '*'.repeat(8))
        }


        let str2 = 'ace'
        let str3 = '19'
        let arr = [1, 2, 3, 4, 5, 6]
        console.log(str.mosaic());
        console.log(str1.mosaic());
        // console.log(str2.capitalize());
        // console.log(str.ellipsis(4));
        // console.log(str3.repairZero());
        // console.log(str.split(''))
        // arr.removeAt(2)
        arr.splice(2, 1)
        console.log(arr);
        console.log(new Date().getChinaDate());
        console.log(new Date().getChinaTime());
        console.log(new Date().isLeapYear());
        console.log(new Date().getWeekDay());
        console.log(new Date().getShortText('2020-09-17 20:00:00'));


    </script>
</body>

</html>