The arguments of JavaScript

One, Arguments.callee//Gets the function that is currently executing, that is, the function itself, often used to get the anonymous function itself

Syntax: Arguments.callee

        function (x) {            if (x < 2) {                return 1Elsereturn x * Arguments.callee (x-1// return Back to 6 3*2*1       

Second, arguments.length//Get the number of arguments passed to the function

Syntax: arguments.length

        function (x) {            return arguments.length;        }        function return//// return 2, the number of arguments expected by the functions. 

Three, argument[]//Index to get parameters, index starting at 0

Syntax: Arguments[index]

        function (x, y) {            document.write (arguments[0]);　　Output 1, index 0 x, which is the 1            document.write ("<br/>" + arguments[1]) in this case; Output 2, index 1 is y, that is, 2        }        fun1 (in this case);  

The arguments of JavaScript