JS get browser basic information: Document.body.clientwidth/clientheight/scrollwidth/scrolltop.

Web page Visible area width: document.body.clientWidth
Web page Visible Area height: document.body.clientHeight
Web page Visible Area width: document.body.offsetWidth (including edge width)
Web page Visible Area High: document.body.offsetHeight (including edge width)
Page body Full text width: document.body.scrollWidth
Page body Full text High: Document.body.scrollHeight
Page is rolled away High: document.body.scrollTop
Webpage is rolled away left: document.body.scrollLeft
Page body part: Window.screentop
Page body part left: Window.screenleft
High screen resolution: Window.screen.height
Width of screen resolution: Window.screen.width
Screen available work area height: window.screen.availHeight
Screen available work area width: window.screen.availWidth

HTML Precise positioning: Scrollleft,scrollwidth,clientwidth,offsetwidth
ScrollHeight: Gets the scroll height of the object.
ScrollLeft: Sets or gets the distance between the left edge of the object and the leftmost of the currently visible content in the window
ScrollTop: Sets or gets the distance between the top of the object and the top of the visible content in the window
ScrollWidth: Gets the scrolling width of the object
Offsetheight: Gets the height of the object relative to the layout or parent coordinates specified by the parent coordinate OffsetParent property
Offsetleft: Gets the calculated left position of the object relative to the layout or the parent coordinate specified by the OffsetParent property
OffsetTop: Gets the computed top position of the object relative to the layout or the parent coordinate specified by the OffsetTop property
Event.clientx horizontal coordinates of relative documents
Event.clienty vertical coordinates of relative documents
Event.offsetx horizontal coordinates relative to the container
Event.offsety the vertical coordinate of the relative container
Document.documentElement.scrollTop The vertical scrolling value
Event.clientx+document.documentelement.scrolltop horizontal coordinates of relative documents + amount of vertical scrolling

Ie,firefox differences are as follows:

IE6.0, ff1.06+:

clientwidth = width + padding

clientheight = height + padding

offsetwidth = width + padding + border

offsetheight = height + padding + border

ie5.0/5.5:
ClientWidth = Width-border

ClientHeight = Height-border

offsetwidth = width

offsetheight = height

(Need to mention: the Margin property in CSS, and clientwidth, Offsetwidth, clientheight, offsetheight are irrelevant)

Web page Visible area width: document.body.clientWidth
Web page Visible Area height: document.body.clientHeight
Web page Visible Area width: document.body.offsetWidth (including edge width)
Web page Visible Area High: document.body.offsetHeight (including edge height)
Page body Full text width: document.body.scrollWidth
Page body Full text High: Document.body.scrollHeight
Page is rolled away High: document.body.scrollTop
Webpage is rolled away left: document.body.scrollLeft
Page body part: Window.screentop
Page body part left: Window.screenleft
High screen resolution: Window.screen.height
Width of screen resolution: Window.screen.width
Screen available work area height: window.screen.availHeight
Screen available work area width: window.screen.availWidth

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Technical Essentials
This section of the code mainly uses the Document object about the properties of the window, the main functions and usage of these properties are as follows.

To get the size of the window, you need to use different properties and methods for different browsers: to detect the real size of the window, you need to use window's properties under Netscape, and in IE you need to examine the body inside the document, in the DOM environment, To get the size of the window, you need to be aware of the size of the root element, not the element.

The Innerwidth property of a Window object contains the internal width of the current window. The Innerheight property of a Window object contains the internal height of the current window.

The body attribute of the Document object corresponds to the label of the HTML document. The DocumentElement property of the Document object represents the root node of the HTML documents.

Document.body.clientHeight represents the current height of the window in which the HTML document resides. Document.body. clientwidth represents the current width of the window in which the HTML document resides.

A little research on getting the size of the visible windows of various browsers.

In my local test: in IE, FireFox, opera can be used

Document.body.clientWidth

Document.body.clientHeight can be obtained, very simple, very convenient.

And in the company project: Opera still uses

Document.body.clientWidth

Document.body.clientHeight

But IE and Firefox use

Document.documentElement.clientWidth

Document.documentElement.clientHeight

It was the standard of the HTTP://WWW.W3.ORG/TR/XHTML1/DTD/XHTML1-TRANSITIONAL.DTD. ">

If you add this line of markup to the page

In IE: document.body.clientWidth ==> body Object width

Document.body.clientHeight ==> Body Object Height

Document.documentElement.clientWidth ==> Visible Area width

Document.documentElement.clientHeight ==> Visible Area height

In Firefox: document.body.clientWidth ==> Body Object width

Document.body.clientHeight ==> Body Object Height

Document.documentElement.clientWidth ==> Visible Area width

Document.documentElement.clientHeight ==> visible area height?

In Opera: Document.body.clientWidth ==> visible Area width

Document.body.clientHeight ==> Visible Area height

Document.documentElement.clientWidth ==> Page object width (i.e. body object width plus margin) Document.documentElement.clientHeight = = > Page object height (i.e. body object height plus margin)

And if there is no standard to define the

Then IE is: document.documentElement.clientWidth ==> 0

Document.documentElement.clientHeight ==> 0

Firefox: Document.documentElement.clientWidth ==> Page object width (i.e. body object width plus margin width)

Document.documentElement.clientHeight ==> Page Object height (i.e. body object height plus margin height)

Opera: Document.documentElement.clientWidth ==> width of the page object (that is, the body object width plus the margin width)

Document.documentElement.clientHeight ==> Page Object height (i.e. body object height plus margin height)

Really a troublesome thing, in fact, in terms of development, rather fewer objects and methods, do not use the latest standards to facilitate many AH.

JS get browser basic information: Document.body.clientwidth/clientheight/scrollwidth/scrolltop.