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JS implements the method of moving webpage background images diagonally, and js webpage background

Source: Internet
Author: User
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JS implements the method of moving webpage background images diagonally, and js webpage background

The example in this article describes how JS achieves oblique movement of webpage background images. Share it with you for your reference. The specific implementation method is as follows:

Copy codeThe Code is as follows: <Head>
<Title> JS enables oblique movement of webpage background images </title>
<Body background = "images/changshi. ico">
<Script language = "Javascript">
<! --
Function selectAll (theField ){
Var tempval = eval ("document." + theField)
Tempval. focus ()
Tempval. select ()
}
// -->
</Script>
<Script language = "Javascript">
<! --
Var background = "images/changshi. ico ";
Var speed = 0;
BrowserName = navigator. appName;
BrowserVer = parseInt (navigator. appVersion );
If (browserName! = "Netscape" | browserVer> = 4.5 ){
Function moveback (movert, movedn, hPos, vPos ){
If (arguments [4])
Document. body. style. backgroundImage = "url (\" "+ arguments [4] + "\")";
If (arguments [5])
Document. body. style. backgroundRepeat = arguments [5]
If (! IsNaN (hPos )){
If (movert! = 0) & (hPos> 0) hPos =-100000
HPos + = movert
}
If (! IsNaN (vPos )){
If (movedn! = 0) & amp; (vPos> 0) vPos =-100000
VPos + = movedn
}
Document. body. style. backgroundPosition = hPos + "" + vPos
If (isNaN (hPos) hPos = "\" "+ hPos + "\""
If (isNaN (vPos) vPos = "\" "+ vPos + "\""
SetTimeout ("moveback (" + movert + "," + movedn + "," + hPos + "," + vPos + ")", speed)
}
Moveback (, background );
}

// -->
</Script>
</Body>
</Html>

I hope this article will help you design javascript programs.

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Related Keywords:
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