jquery/src/dimensions.js

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(function( jQuery ) {
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// Create innerHeight, innerWidth, outerHeight and outerWidth methods
jQuery.each([ "Height", "Width" ], function( i, name ) {
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var type = name.toLowerCase();
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// innerHeight and innerWidth
jQuery.fn["inner" + name] = function() {
return this[0] ?
parseFloat( jQuery.css( this[0], type, "padding" ) ) :
null;
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};
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// outerHeight and outerWidth
jQuery.fn["outer" + name] = function( margin ) {
return this[0] ?
parseFloat( jQuery.css( this[0], type, margin ? "margin" : "border" ) ) :
null;
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};
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jQuery.fn[ type ] = function( size ) {
// Get window width or height
var elem = this[0];
if ( !elem ) {
return size == null ? null : this;
}
if ( jQuery.isFunction( size ) ) {
return this.each(function( i ) {
var self = jQuery( this );
self[ type ]( size.call( this, i, self[ type ]() ) );
});
}
if ( jQuery.isWindow( elem ) ) {
// Everyone else use document.documentElement or document.body depending on Quirks vs Standards mode
// 3rd condition allows Nokia support, as it supports the docElem prop but not CSS1Compat
var docElemProp = elem.document.documentElement[ "client" + name ];
return elem.document.compatMode === "CSS1Compat" && docElemProp ||
elem.document.body[ "client" + name ] || docElemProp;
// Get document width or height
} else if ( elem.nodeType === 9 ) {
// Either scroll[Width/Height] or offset[Width/Height], whichever is greater
return Math.max(
elem.documentElement["client" + name],
elem.body["scroll" + name], elem.documentElement["scroll" + name],
elem.body["offset" + name], elem.documentElement["offset" + name]
);
// Get or set width or height on the element
} else if ( size === undefined ) {
var orig = jQuery.css( elem, type ),
ret = parseFloat( orig );
return jQuery.isNaN( ret ) ? orig : ret;
// Set the width or height on the element (default to pixels if value is unitless)
} else {
return this.css( type, typeof size === "string" ? size : size + "px" );
}
};
});
})( jQuery );