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JS animation effect code 3

Source: Internet
Author: User
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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>
<Meta http-equiv = "Content-Type" content = "text/html; charset = UTF-8"/>
<Title> Untitled Document </title>
<Style type = "text/css">
<! --
# ApDiv1 {
Position: absolute;
Left: 300px;
Top: 100px;
Width: 100px;
Height: 100px;
Z-index: 1;
Background-color: # FF00FF;
}
# ApDiv2 {
Position: absolute;
Left: 402px;
Top: 100px;
Width: 100px;
Height: 100px;
Z-index: 2;
Background-color: #00 FFFF;
}
# ApDiv3 {
Position: absolute;
Left: 402px;
Top: 200px;
Width: 100px;
Height: 100px;
Z-index: 3;
Background-color: #99FF00;
}
# ApDiv4 {
Position: absolute;
Left: 300px;
Top: 200px;
Width: 100px;
Height: 100px;
Z-index: 4;
Background-color: # FFFF00;
}
-->
</Style>
</Head>

<Body>
<Div id = "apDiv1"> </div>
<Div id = "apDiv2"> </div>
<Div id = "apDiv3"> </div>
<Div id = "apDiv4"> </div>
</Body>
</Html>
<Script language = "javascript" type = "text/javascript">
Function $ (pId ){
Return document. getElementById (pId );
}

Function JPos (){

}

JPos. getAbsPos = function (pTarget ){
Var _ x = 0;
Var _ y = 0;
While (pTarget. offsetParent ){
_ X + = pTarget. offsetLeft;
_ Y + = pTarget. offsetTop;
PTarget = pTarget. offsetParent;
}
_ X + = pTarget. offsetLeft;
_ Y + = pTarget. offsetTop;

Return {x: _ x, y: _ y };
}

Function JAniObj (){
This. obj = null;
This. interval = null;

This. orgPos = null;
This.tar getPos = null;

This. orgSize = {w: 50, y: 50}; // initial length and width
This.tar getSize = {w: 100, y: 100}; // The target length and width.
This. step = {x: 10, y: 10}; // step x: x direction y: y direction
This. alpha = {s: 10, e: 90, t: 10}; // transparency, initial s, end e, step t
}

Function JAni (){
Var self = this;
Var aniObjs = {};

Var getCurrentStyleProperty = function (pObj, pProperty ){
Try {
If (pObj. currentStyle)
Return eval ("pObj. currentStyle." + pProperty );
Else
Return document. defaultView. getComputedStyle (pObj, ""). getPropertyValue (pProperty );
} Catch (e ){
Alert (e );
}
}

This. popup = function (pDiv, pOrgSize, pTargetSize, pStep, pAlpha ){

Var aniObj = new JAniObj ();
AniObjs [pDiv] = aniObj;

With (aniObj ){
Obj = $ (pDiv );
OrgPos = JPos. getAbsPos (obj );
OrgSize = pOrgSize;
TargetSize = pTargetSize;
Step = pStep;
Alpha = pAlpha;

With (obj. style ){
Overflow = "hidden ";
Position = "absolute ";
Width = pOrgSize. w + "px ";
Height = pOrgSize. h + "px ";
Left = orgPos. x + "px ";
Top = orgPos. y + "px ";
If (document. all ){
Filter = "Alpha (opacity =" + pAlpha. s + ")";
} Else
Opacity = pAlpha. s/100;
}
}

AniObj. interval = setInterval ("popup _ ('" + pDiv + "')", 10 );
}

Popup _ = function (pDivId ){


PObj = aniObjs [pDivId];

Var w = parseInt (pObj. obj. style. width );
Var h = parseInt (pObj. obj. style. height );

If (w> = Math.abs(pObj.tar getSize. w) & h> = Math.abs(pObj.tar getSize. h )){
ClearInterval (pObj. interval );
If (document. all)
PObj. obj. style. filter = "Alpha (opacity =" + pObj. alpha. e + ")";
Else
PObj. obj. style. opacity = pObj. alpha. e/100;



Delete aniObjs [pObj. obj. id];
} Else {
If (w <Math.abs(pObj.tar getSize. w ))
W + = pObj. step. x;

If (h <Math.abs(pObj.tar getSize. h ))
H + = pObj. step. y;

If (document. all ){
Var pattern =/opacity = (\ d {1, 3 })/;
Var result = pattern.exe c (pObj. obj. style. filter );
If (result! = Null ){
If (result [1] <pObj. alpha. e)
PObj. obj. style. filter = "Alpha (opacity =" + (result [1] + pObj. alpha. t) + ")"
Else
PObj. obj. style. filter = "Alpha (opacity =" + pObj. alpha. e + ")";
}
} Else {
If (pObj. obj. style. opacity <pObj. alpha. e/100 ){
PObj. obj. style. opacity = parseFloat (pObj. obj. style. opacity) + pObj. alpha. t/100;
} Else
PObj. obj. style. opacity = pObj. alpha. e/100;
}
}

PObj. obj. style. width = w + "px ";
PObj. obj. style. height = h + "px ";

If(pObj.tar getSize. w <0 ){
Var vLeft = parseInt (getCurrentStyleProperty (pObj. obj, "left "));
VLeft = isNaN (vLeft )? 0: vLeft;
PObj. obj. style. left = vLeft-pObj. step. x + "px ";
}

If(pObj.tar getSize. h <0 ){
Var vTop = parseInt (getCurrentStyleProperty (pObj. obj, "top "));
VTop = isNaN (vTop )? 0: vTop;
PObj. obj. style. top = vTop-pObj. step. y + "px ";
}
}
}

Var ani = new JAni ();
Ani. popup (
"ApDiv1 ",
{W: 50, h: 50}, // initial length and width
{W: 200, h: 200}, // target length and width
{X: 8, y: 8}, // step size
{S: 10, e: 80, t: 10} // transparency start, end, step size
);

Ani. popup (
"ApDiv2 ",
{W: 50, h: 50}, // initial length and width
{W:-200, h: 200}, // target length and width
{X: 8, y: 8}, // step size
{S: 10, e: 40, t: 2} // transparency start, end, step size
);

Ani. popup (
"ApDiv3 ",
{W: 50, h: 50}, // initial length and width
{W:-200, h:-200}, // target length and width
{X: 8, y: 8}, // step size
{S: 10, e: 40, t: 10} // transparency start, end, step size
);

Ani. popup (
"ApDiv4 ",
{W: 50, h: 50}, // initial length and width
{W: 200, h:-200}, // target length and width
{X: 8, y: 8}, // step size
{S: 10, e: 50, t: 10} // transparency start, end, step size
);
</Script>

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.

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