Explain the use of of instance of arguments in js

2020-03-30 00:39:08
OfStack
As follows:

<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>arguments The use of </title>
</head>
<body>
    <script type="text/javascript">
       function display() {
        document.writeln(' The company ' + arguments.length + ' people ');
        var sum = 0;
        for (var i = 0; i < arguments.length; i++) {
         sum += arguments[i];
        }
        return sum;
       }

       sum = display(1000, 2000, 3000, 4000, 5000);
       document.writeln('sum1:' + sum + '<br/>');
       sum = display(100, 200, 300);
       document.writeln('sum2:' + sum);

    </script>
</body>
</html>