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Js Based on the mouse movement speed, the method of automatically rotating the background image, js movement speed

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Js Based on the mouse movement speed, the method of automatically rotating the background image, js movement speed

This article describes how js automatically rotates the background image based on the mouse movement speed. Share it with you for your reference. The specific implementation method is as follows:

Copy codeThe Code is as follows: <! DOCTYPE html PUBLIC "-// W3C // dtd xhtml 1.0 Transitional // EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<Html xmlns = "http://www.w3.org/1999/xhtml">
<Head>
<Title> JavaScript allows you to quickly rotate images around the mouse </title>
<Meta http-equiv = "content-type" content = "text/html; charset = gb2312">
</Head>
<Body>
<Script language = "JavaScript">
<! --
Var images = '/favicon. ico ';
Var amount = 7;
Var speed = 1;
Var RunTime = 0;
Var cntr = 0;
Var xcntr = 100;
Var pulse = 25;
Var Xpos = 0;
Var Ypos = 0;
Var _ y;
Var temp;
/* If you use an image larger or smaller than the one I 've used
The cursor will be off center. Alter the 2 variables below to center it .*/
Var UpDown =-10;
Var LeftRight =-5;
If (document. all ){
Document. write ('<div id = "ieDiv" style = "position: absolute; top: 0px; left: 0px"> ');
Document. write ('<div id = "c" style = "position: relative"> ');
For (n = 0; n <amount; n ++)
Document. write (' ');
Document. write ('</div> ');
Document. write ('</div> ');
Function FollowMouse (){
Xpos = document. body. scrollLeft + event. x + UpDown;
Ypos = document. body. scrollTop + event. y + LeftRight;
}
Document. onmousemove = FollowMouse;
}
Else if (document. layers ){
Window. captureEvents (Event. MOUSEMOVE );
Function xFollowMouse (evnt ){
Xpos = evnt. pageX + UpDown;
Ypos = evnt. pageY + LeftRight;
}
Window. onMouseMove = xFollowMouse;
For (ns = 0; ns <amount; ns ++)
Document. write ("<layer name = 'n'" + ns + "'left = '0' TOP = '0' VISIBILITY = 'hide '> </LAYER> ");
}
Function msi (){
If (document. layers ){
For (I = 0; I <ns; I ++)
{
Temp = "n" + I
Document. layers [0]. visibility = 'show ';
Document. layers [0]. top = Ypos + cntr * Math. cos (RunTime + I * 4.5)/5 );
Document. layers [0]. left = Xpos + cntr * Math. sin (RunTime + I * 4.5)/5 );
}
Cntr + = 1;
RunTime + = speed;
Stp = setTimeout ('msi () ', 10 );
If (cntr> = 100)
{
Cntr = 100;
Speed = 2.5;
For (I = 0; I <ns; I ++)
{
Temp = "n" + I
Document. layers [temp]. visibility = 'show ';
Document. layers [temp]. top = Ypos + cntr * Math. cos (RunTime-100) * I/90 );
Document. layers [temp]. left = Xpos + cntr * Math. sin (RunTime-100) * I/90 );
}
}
If (RunTime> 182)
{
Speed = 0.5;
For (I = 0; I <ns; I ++)
{
Temp = "n" + I
Document. layers [temp]. top = Ypos + xcntr * Math. cos (RunTime-182) + I * 4.5)/5 );
Document. layers [temp]. left = Xpos + xcntr * Math. sin (RunTime-182) + I * 4.5)/5) * Math. cos (RunTime-182)/5 );
}
}
}
Else if (document. all ){
For (I = 0; I <ieDiv. all. c. all. length; I ++)
{
IeDiv. all. c. all [0]. style. visibility = 'visible ';
IeDiv. all. c. all [0]. style. top = Ypos + cntr * Math. cos (RunTime + I * 4.5)/5 );
IeDiv. all. c. all [0]. style. left = Xpos + cntr * Math. sin (RunTime + I * 4.5)/5 );
}
Cntr + = 1;
RunTime + = speed;
Stp = setTimeout ('msi () ', 10 );
If (cntr> = 100)
{
Cntr = 100;
Speed = 2.5;
For (I = 0; I <ieDiv. all. c. all. length; I ++)
{
IeDiv. all. c. all [I]. style. visibility = 'visible ';
IeDiv. all. c. all [I]. style. top = Ypos + cntr * Math. cos (RunTime-100) * I/90 );
IeDiv. all. c. all [I]. style. left = Xpos + cntr * Math. sin (RunTime-100) * I/90 );
}
}
If (RunTime> 182)
{
Speed = 0.5;
For (I = 0; I <ieDiv. all. c. all. length; I ++)
{
IeDiv. all. c. all [I]. style. top = Ypos + xcntr * Math. cos (RunTime-182) + I * 4.5)/5 );
IeDiv. all. c. all [I]. style. left = Xpos + xcntr * Math. sin (RunTime-182) + I * 4.5)/5) * Math. cos (RunTime-182)/5 );
}
}
}
If (RunTime> 210)
{
Xcntr-= 10;
}
If (document. layers)
_ Y =-window. innerWidth-90;
Else if (document. all)
_ Y =-document. body. clientWidth-90;
If (xcntr <= _ y)
{
RunTime = 0;
Speed = 1;
Cntr = 0;
Xcntr = 100;
}
}
Msi ()
// -->
</Script>
<Script language = "Javascript">
<! --
Function selectAll (theField ){
Var tempval = eval ("document." + theField)
Tempval. focus ()
Tempval. select ()
}
// -->
</Script>
</Body>
</Html>

I hope this article will help you design javascript programs.

This article is an English version of an article which is originally in the Chinese language on aliyun.com and is provided for information purposes only. This website makes no representation or warranty of any kind, either expressed or implied, as to the accuracy, completeness ownership or reliability of the article or any translations thereof. If you have any concerns or complaints relating to the article, please send an email, providing a detailed description of the concern or complaint, to info-contact@alibabacloud.com. A staff member will contact you within 5 working days. Once verified, infringing content will be removed immediately.

Related Keywords:
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