How to use javascript to retrieve webpage width and height _ javascript skills

This article provides a summary of the methods for obtaining the width of a webpage through javascript, as well as the comparison of the values obtained by different methods in various browsers. For more information, see. Document. body. clientWidth-visible area width of the webpage
Document. body. clientHeight-the visible area of the webpage is high.

Document. body. offsetWidth-visible area width of the webpage, including the width of the edge and scroll bar
Document. body. offsetHeight-the visible area of the webpage is high, including the height of the edge and the scroll bar. [FF, The chrom is the whole page height, and the IE opera is normal]

Document. body. scrollWidth-total webpage width
Document. body. scrollHeight-total webpage height

Document. body. scrollTop-when there is a scroll bar, drag down the scroll bar, the height of the part not shown above
Document. body. scrollLeft-Same as above

Window. innerHeight-the internal height of the browser window

Window. innerWidth-the internal width of the browser window

Window. screenTop-the distance from the top of the webpage document to the top of the screen, but FF does not support it. The performance of Chrom, IE, and Opera varies with caution.]
Window. screenLeft-left part of the webpage body [the leftmost side of the webpage document is the leftmost side distance from the screen, but FF does not support it. The performance of Chrom, IE, and Opera is different. Use it with caution]

Window. screen. height-screen resolution height
Window. screen. width-width of the screen resolution

Window. screen. availHeight-available workspace height [entire screen, excluding the taskbar below]
Window. screen. availWidth-available workspace width [width of the entire screen]

Window. screen. clorDepth-screen color, commonly used 16-bit, 32-bit, etc.
Window. screen. deviceXDPI-screen pixels/inches [supported by IE, not supported by others]

How to obtain the page width by using JavaScript

Script function getInfo () {var s = ""; s + = "visible area width of the webpage:" + document. body. clientWidth; s + = "visible area of the webpage high:" + document. body. clientHeight; s + = "visible area width of the webpage:" + document. body. offsetWidth + "(including the width of the edge and scroll bar)"; s + = "visible area of the webpage Height:" + document. body. offsetHeight + "(including edge width)"; s + = "webpage text width:" + document. body. scrollWidth; s + = "webpage text Height:" + document. body. scrollHeight; s + = "the height of the page to which the page is rolled (ff):" + document. body. scrollTop; s + = "high page volume (ie):" + document.doc umentElement. scrollTop; s + = "left when the webpage is rolled:" + document. body. scrollLeft; s + = "webpage body part:" + window. screenTop; s + = "webpage body section left:" + window. screenLeft; s + = "high screen resolution:" + window. screen. height; s + = "Screen Resolution width:" + window. screen. width; s + = "available workspace height of the screen:" + window. screen. availHeight; s + = "available workspace width:" + window. screen. availWidth; s + = "your screen setting is" + window. screen. colorDepth + "bit color"; s + = "Your Screen Settings" + window. screen. deviceXDPI + "pixels/inches"; // alert (s);} getInfo (); script

In my local test:
It can be used in IE, FireFox, and Opera

document.body.clientWidthdocument.body.clientHeight

It is very simple and convenient.
In the company's projects:
Opera is still in use

document.body.clientWidthdocument.body.clientHeight

However, IE and FireFox use

document.documentElement.clientWidthdocument.documentElement.clientHeight

It turned out to be W3C standards.

If this line is added to the page

In IE:

Document. body. clientWidth => BODY object width document. body. clientHeight => bodyobject height document.doc umentElement. clientWidth => wide distance document.doc umentElement. clientHeight => visible area height

In FireFox:

Document. body. clientWidth => BODY object width document. body. clientHeight => bodyobject height document.doc umentElement. clientWidth => wide distance document.doc umentElement. clientHeight => visible area height

In Opera:

Document. body. clientWidth => visible area width document. body. clientHeight ==> zookeeper High Level document.doc umentElement. clientWidth ==> Page Object width (that is, the bodyobject width is added to the marginwidth extension document.doc umentElement. clientHeight => Page Object height (that is, the height of the BODY object plus the Margin height)

If W3C standards are not defined

IE:

document.documentElement.clientWidth ==> 0document.documentElement.clientHeight ==> 0

FireFox:

The Code is as follows:

Document.doc umentElement. clientWidth ==> Page Object width (that is, the width of the BODY object plus the Margin width)
Document.doc umentElement. clientHeight ==> Page Object height (that is, the height of the BODY object plus the Margin height)

Opera:

The Code is as follows:

Document.doc umentElement. clientWidth ==> Page Object width (that is, the width of the BODY object plus the Margin width)
Document.doc umentElement. clientHeight ==> Page Object height (that is, the height of the BODY object plus the Margin height)

The above is all the content of this article. I hope you will like it.