How to locate a JavaScript webpage _ javascript tips-js tutorial

This article mainly introduces JavaScript web page positioning in detail. For more information, see document. body. clientWidth.
Visible area height: document. body. clientHeight
Visible area width of the webpage: document. body. offsetWidth (including the width of the edge)
Visible area height of the webpage: document. body. offsetHeight (including the width of the edge)
Webpage text width: document. body. scrollWidth
Webpage text height: document. body. scrollHeight
The height of the page to be rolled: document. body. scrollTop
Left: document. body. scrollLeft
Page body: window. screenTop
Page body part left: window. screenLeft
Screen Resolution height: window. screen. height
Screen Resolution width: window. screen. width
Available screen workspace Height: window. screen. availHeight
Available workspace width: window. screen. availWidth

Precise HTML positioning: scrollLeft, scrollWidth, clientWidth, and offsetWidth
ScrollHeight: gets the scroll height of an object.
ScrollLeft: sets or obtains the distance between the left-side border of the object and the leftmost end of the currently visible content in the window.
ScrollTop: sets or obtains the distance between the top of the object and the top of the visible content in the window.
ScrollWidth: gets the scroll width of an object.
OffsetHeight: gets the height of an object relative to the layout or the parent coordinate specified by the parent coordinate offsetParent attribute.
OffsetLeft: obtains the left position of the object relative to the layout or the parent coordinate specified by the offsetParent attribute.
OffsetTop: obtains the top position of an object relative to the layout or the parent coordinate specified by the offsetTop attribute.
The horizontal coordinates of event. clientX relative to the document
The vertical coordinates of event. clientY relative to the document
Horizontal coordinates of event. offsetX relative to the container
Event. offsetY vertical coordinates of the container
Document.doc umentElement. scrollTop vertical scroll Value
Event.clientxw.document.doc umentElement. The horizontal coordinate of scrollTop relative to the document + The amount of vertical scrolling

The differences between IE and FireFox 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

(The margin attribute in CSS is independent of clientWidth, offsetWidth, clientHeight, and offsetHeight)

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Yesterday, I changed the layout of some pages in the project. After the change, I found some js files were difficult to use. The page width obtained through a statement such as document.doc umentElement. clientWidth is 0. After too many Googles, we know that the W3C standard is missing on the new page, leading to invalid document.doc umentElement. clientWidth:

If this line is added to the page

In IE:
Document. body. clientWidth ==> BODY object width
Document. body. clientHeight ==> BODY object height
Document.doc umentElement. clientWidth ==> visible area width
Document.doc umentElement. clientHeight => visible area height

In FireFox:
Document. body. clientWidth ==> BODY object width
Document. body. clientHeight ==> BODY object height
Document.doc umentElement. clientWidth ==> visible area width
Document.doc umentElement. clientHeight => visible area height

In Opera:
Document. body. clientWidth ==> visible area width
Document. body. clientHeight ==> visible area height
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)
If W3C standards are not defined

IE:
Document.doc umentElement. clientWidth ==> 0
Document.doc umentElement. clientHeight => 0

FireFox:
Document.doc umentElement. clientWidth ==> Page Object width (that is, adding the bodyobject width to the marginwidth) document.doc umentElement. clientHeight ==> Page Object height (that is, the BODY object height plus the Margin height)

Opera:
Document.doc umentElement. clientWidth ==> Page Object width (that is, adding the bodyobject width to the marginwidth) document.doc umentElement. clientHeight ==> Page Object height (that is, the BODY object height plus the Margin height)