What is a pseudo-array in javascript? How do I convert a pseudo-array to a standard array?

Pseudo-Arrays (class arrays): You cannot call an array method directly or expect any special behavior for the length property, but you can still traverse them with a true array traversal method. Typically, the argument parameters of a function, as well as calls to Getelementsbytagname,document.childnodes, are all returned nodelist objects are pseudo-arrays. You can use Array.prototype.slice.call (Fakearray) to convert an array to a true array object.

We will add an "(app)" prefix to each log method, such as ' Hello world! ' (app) Hello world! '. Here's how:

        function log () {            var args = Array.prototype.slice.call (arguments)            args.unshift (' (APP) ' )            console.log.apply (console, args)        }        log (' Hello World ')

What is a pseudo-array in javascript? How do I convert a pseudo-array to a standard array?