Function inspect

docs/2.2/js/jquery.js:7679–7693

( dataType )

        seekingTransport = ( structure === transports );

    function inspect( dataType ) {
        var selected;
        inspected[ dataType ] = true;
        jQuery.each( structure[ dataType ] || [], function( _, prefilterOrFactory ) {
            var dataTypeOrTransport = prefilterOrFactory( options, originalOptions, jqXHR );
            if( typeof dataTypeOrTransport === "string" && !seekingTransport && !inspected[ dataTypeOrTransport ] ) {
                options.dataTypes.unshift( dataTypeOrTransport );
                inspect( dataTypeOrTransport );
                return false;
            } else if ( seekingTransport ) {
                return !( selected = dataTypeOrTransport );
            }
        });
        return selected;
    }

    return inspect( options.dataTypes[ 0 ] ) || !inspected[ "*" ] && inspect( "*" );
}