Question

Possible Duplicate:
Calling dynamic function with dynamic parameters in Javascript
javascript array parameter list

I’m looking for the Javascript equivalent of the following functionality I use in PHP:

function myfunc()
{
     $arg_arr = array();
     $arg_arr = func_get_args();

     $my_arg_val_1 = (!isset($arg_arr[1]) || ($arg_arr[1] == '')) ? true : $arg_arr[1];
}

Basically, I’m trying to get the function arguments. I want to write a javascript function to take one argument, but I want to add some code to do a few things with the second and third argument if it is provided, but I’m not sure how to pull this off.

Any assistance will be appreciated.

Thanks.

Answer 1

In JavaScript there is arguments variable available in each function. It looks like an array which contains all arguments passed to a function:

function myfunc() {
    var arg1 = arguments[0],
        arg2 = arguments[1],
        argc = arguments.length;
}

myfunc(1, "abc");  // arg1 = 1,
                   // arg2 = "abc",
                   // argc = 2