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dimensions.js
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dimensions.js
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/**
* This plugin overrides jQuery's height() and width() functions and
* adds more handy stuff for cross-browser compatibility.
*/
/**
* Returns the css height value for the first matched element.
* If used on document, returns the document's height (innerHeight)
* If used on window, returns the viewports (window's) height
*
* @example $("#testdiv").height()
* @result [ 200px ]
*
* @name height
* @type jQuery
* @cat Dimensions
*/
$.fn.height = function() {
if(this.get(0) == window) {
if (self.innerHeight) return self.innerHeight;
else if (document.documentElement && document.documentElement.clientHeight) return document.documentElement.clientHeight;
else if (document.body) return document.body.clientHeight;
}
if(this.get(0) == document) {
var test1 = document.body.scrollHeight;
var test2 = document.body.offsetHeight;
if (test1 > test2) return document.body.scrollHeight;
else return document.body.offsetHeight;
}
return this.css("height");
}
/**
* Returns the css width value for the first matched element.
* If used on document, returns the document's width (innerWidth)
* If used on window, returns the viewports (window's) width
*
* @example $("#testdiv").width()
* @result [ 200px ]
*
* @name width
* @type jQuery
* @cat Dimensions
*/
$.fn.width = function() {
if(this.get(0) == window) {
if (self.innerWidth) return self.innerWidth;
else if (document.documentElement && document.documentElement.clientWidth) return document.documentElement.clientWidth;
else if (document.body) return document.body.clientWidth;
}
if(this.get(0) == document) {
var test1 = document.body.scrollWidth;
var test2 = document.body.offsetWidth;
if (test1 > test2) return document.body.scrollWidth;
else return document.body.offsetWidth;
}
return this.css("width");
}
/**
* Returns the inner height value (without border) for the first matched element.
* If used on document, returns the document's height (innerHeight)
* If used on window, returns the viewports (window's) height
*
* @example $("#testdiv").innerHeight()
* @result [ 800px ]
*
* @name innerHeight
* @type jQuery
* @cat Dimensions
*/
$.fn.innerHeight = function() {
if(this.get(0) == window || this.get(0) == document) return this.height();
return this.get(0).offsetHeight - (parseInt(this.css("borderTop")) + parseInt(this.css("borderBottom")));
}
/**
* Returns the inner width value (without border) for the first matched element.
* If used on document, returns the document's Width (innerWidth)
* If used on window, returns the viewports (window's) width
*
* @example $("#testdiv").innerWidth()
* @result [ 1000px ]
*
* @name innerWidth
* @type jQuery
* @cat Dimensions
*/
$.fn.innerWidth = function() {
if(this.get(0) == window || this.get(0) == document) return this.width();
return this.get(0).offsetWidth - (parseInt(this.css("borderLeft")) + parseInt(this.css("borderRight")));
}
/**
* Returns the outer height value (including border) for the first matched element.
* Cannot be used on document or window.
*
* @example $("#testdiv").outerHeight()
* @result [ 1000px ]
*
* @name outerHeight
* @type jQuery
* @cat Dimensions
*/
$.fn.outerHeight = function() {
if(this.get(0) == window || this.get(0) == document) return 0;
return this.get(0).offsetHeight;
}
/**
* Returns the outer width value (including border) for the first matched element.
* Cannot be used on document or window.
*
* @example $("#testdiv").outerWidth()
* @result [ 1000px ]
*
* @name outerWidth
* @type jQuery
* @cat Dimensions
*/
$.fn.outerWidth = function() {
if(this.get(0) == window || this.get(0) == document) return 0;
return this.get(0).offsetWidth;
}
/**
* Returns how many pixels the user has scrolled to the right (scrollLeft).
* Works on containers with overflow: auto and window/document.
*
* @example $("#testdiv").scrollLeft()
* @result [ 100px ]
*
* @name scrollLeft
* @type jQuery
* @cat Dimensions
*/
$.fn.scrollLeft = function() {
if(this.get(0) == window || this.get(0) == document) {
if (self.pageXOffset) return self.pageXOffset;
else if (document.documentElement && document.documentElement.scrollLeft) return document.documentElement.scrollLeft;
else if (document.body) return document.body.scrollLeft;
}
return this.get(0).scrollLeft;
}
/**
* Returns how many pixels the user has scrolled to the bottom (scrollTop).
* Works on containers with overflow: auto and window/document.
*
* @example $("#testdiv").scrollTop()
* @result [ 100px ]
*
* @name scrollTop
* @type jQuery
* @cat Dimensions
*/
$.fn.scrollTop = function() {
if(this.get(0) == window || this.get(0) == document) {
if (self.pageYOffset) return self.pageYOffset;
else if (document.documentElement && document.documentElement.scrollTop) return document.documentElement.scrollTop;
else if (document.body) return document.body.scrollTop;
}
return this.get(0).scrollTop;
}