Apparently neither instanceof nor typeof deliver in terms of correctly identifying the type of every javascript object. I have come up with this function and I'm looking for some feedback:

    function getType() {

        var input = arguments[0] ;

        var types = ["String","Array","Object","Function","HTML"] ; //!! of the top of my head

        for(var n=0; n < types.length; n++) {

            if( input.constructor.toString().indexOf( types[n] ) != -1) {
                document.write( types[n] ) ;
            }

        }

    }

Thanks for reading!