8）arguments
例 3.8.1
<head>
<meta http-equiv="content-type" content="text/html; charset=utf-8"/>
</head>
<script>
/* 马克-to-win：when there are n functions with the same function name, only the last one is used. */
function test()
{
document.writeln("no argument constructor.");
}
function test(person)
{
document.writeln("马克-to-win2");
/*Function.arguments[] (Collection) The values passed to the function when it is called.
马克-to-win: inside function,we can directly use arguments.
*/
var n = arguments.length;
document.writeln("n is " + n);
for (var i = 0; i < n; i++)
{
document.writeln("马克-to-win3");
document.writeln(arguments[i])
}
document.writeln(person);
document.writeln(typeof(person) + "is typeof");
}
/*when no param, undefined is passed in. no overloaded function concept.*/
test();
/*when there is no this function, program stops here.*/
change();
document.writeln("finally");
</script>
转载自：https://blog.csdn.net/qq_44594249/article/details/100091795