JQuery outerWidth with given argument?

Question

Since I also ran into a jquery auto-fill problem of the wrong width -

I saw this piece of code:

_resizeMenu: function() {
    var ul = this.menu.element;
    ul.outerWidth( Math.max(    //<------
        ul.width( "" ).outerWidth(),
        this.element.outerWidth()
    ) );
}

But AFAIK outerWidthdoes not accept a parameter other than the bool parameter to indicate fields.

I do not think that they did this only in order to obtain true, false value, because MAth.max is not required for this. they could use ||.

What am I missing?

Answer 1

See jQuery source:

// Create innerHeight, innerWidth, height, width, outerHeight and outerWidth methods
jQuery.each( { Height: "height", Width: "width" }, function( name, type ) {
    jQuery.each( { padding: "inner" + name, content: type, "": "outer" + name }, function( defaultExtra, funcName ) {
        // margin is only for outerHeight, outerWidth
        jQuery.fn[ funcName ] = function( margin, value ) {
            var chainable = arguments.length && ( defaultExtra || typeof margin !== "boolean" ),
                extra = defaultExtra || ( margin === true || value === true ? "margin" : "border" );

            return jQuery.access( this, function( elem, type, value ) {
                var doc;

                if ( jQuery.isWindow( elem ) ) {
                    // As of 5/8/2012 this will yield incorrect results for Mobile Safari, but there
                    // isn't a whole lot we can do. See pull request at this URL for discussion:
                    // https://github.com/jquery/jquery/pull/764
                    return elem.document.documentElement[ "client" + name ];
                }

                // Get document width or height
                if ( elem.nodeType === 9 ) {
                    doc = elem.documentElement;

                    // Either scroll[Width/Height] or offset[Width/Height] or client[Width/Height], whichever is greatest
                    // unfortunately, this causes bug #3838 in IE6/8 only, but there is currently no good, small way to fix it.
                    return Math.max(
                        elem.body[ "scroll" + name ], doc[ "scroll" + name ],
                        elem.body[ "offset" + name ], doc[ "offset" + name ],
                        doc[ "client" + name ]
                    );
                }

                return value === undefined ?
                    // Get width or height on the element, requesting but not forcing parseFloat
                    jQuery.css( elem, type, extra ) :

                    // Set width or height on the element
                    jQuery.style( elem, type, value, extra );
            }, type, chainable ? margin : undefined, chainable, null );
        };
    });
});

As you can see innerHeight, innerWidth, height, width, outerHeight and outerWidth are created with marginand parameters value.

(typeof margin !== "boolean"), chainable , , , , margin jQuery.acess (chainable ? margin : undefined).

, jQuery.style( elem, type, value, extra ), type "width", value Math.max, extra "border".

, jquery-1.10.2.js#9746 @http://jsfiddle.net/95b7K/