JS 实现1!+2!+3!+4!+5!+....+n!

<!DOCTYPE html>

<html>

    <head>

        <meta charset="UTF-8">

        <title></title>

    </head>

    <body>

    </body>

</html>

<script type="text/javascript">

    var n = parseInt(prompt("请输入数字"));

     var z = 0

    for(var i = 1;i<=n;i++){

        for(var c = 0;c<i;c++){

            var s =1

            s=s*c

            s++

            z=s+z

        }

    }

    document.write(z)

</script>

巴特西

JS 实现1!+2!+3!+4!+5!+....+n!

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