JS sample code to achieve picture flipping effect_javascript skills

picture.html

复制代码 代码如下:

picture.css

复制代码 代码如下:

#center {
LEFT: 50%; POSITION: absolute; TOP: 50%
}
#DHTMLBOOK {
BACKGROUND: #000; LEFT: -210px; VISIBILITY: hidden; WIDTH: 210px; POSITION: relative; TOP: -160px; HEIGHT: 160px
}
#TXTBOX {
FONT-SIZE: 0.8em; WIDTH: 210px; COLOR: #aba193; FONT-FAMILY: verdana; POSITION: absolute; TOP: 160px; TEXT-ALIGN: center
}
.page {
OVERFLOW: hidden; BORDER-LEFT: #000000 1px solid; WIDTH: 50%; CURSOR: pointer; POSITION: absolute; HEIGHT: 100%
}
.right {
BORDER-RIGHT: #000000 1px solid; LEFT: 50%
}
.turn {
BACKGROUND: #000000
}
.img {
WIDTH: 200%; POSITION: absolute; HEIGHT: 100%
}

picture.js

复制代码 代码如下:

document.onselectstart = function () { return false; }

var nI = 0;
var kI = 0;
var run = false;

function setOpacity(obj,o) {
if (o<0) o=0; else if (o>100) o = 100;
if (obj.filters)obj.filters.alpha.opacity=o; else obj.style.opacity = o/100;
}
function TPR__(p) {
P1.style.left = 50-(2.5*p) "%";
P1.style.width = (2.5*p) "%";
setOpacity(P1i, .5*p*p);
if (p == 20) run = false;
}
function TPR_(p) {
P2.style.width = 50-(2.5*p) "%";
setOpacity(P2i, 100-.5*(p*p));
if (p == 20) {
P2i.src = IMGSRC[kI].src;
setOpacity(P2i, 100);
P2.style.width = "50%";
for(var i=1; i<=20; i ) setTimeout("TPR__(" i ")", i*32);
}
}
function TPR() {
if (!run) {
run = true;
P01i.src = IMGSRC[kI].src;
P1.style.width = 0;
kI ;
if (kI>=nI) kI = 0;
titLe(kI);
P02i.src = IMGSRC[kI].src;
P1i.src = IMGSRC[kI].src;
for (var i=1; i<=20; i ) setTimeout("TPR_(" i ")", i*32);
} else setTimeout("TPR()", 100);
}

function TPL__(p) {
P2.style.width = (2.5*p) "%";
setOpacity(P2i, .5*p*p);
if (p == 20) run = false;
}
function TPL_(p) {
P1.style.left = (2.5*p) "%";
P1.style.width = 40 (10-2.5*p) "%";
setOpacity(P1i, 100-.5*(p*p));
if (p == 20) {
P1i.src = IMGSRC[kI].src;
setOpacity(P1i, 100);
P1.style.left = 0;
P1.style.width = "50%";
for(var i=1; i<=20; i ) setTimeout("TPL__(" i ")", i*32);
}
}
function TPL() {
if (!run) {
run = true;
P02i.src = IMGSRC[kI].src;
P2.style.width = 0;
kI--;
if (kI < 0) kI = nI-1;
titLe(kI);
P01i.src = IMGSRC[kI].src;
P2i.src = IMGSRC[kI].src;
for(var i=1; i<=20; i ) setTimeout("TPL_(" i ")", i*32);
} else setTimeout("TPL()", 100);
}
function titLe(p) {
document.getElementById("TXTBOX").innerHTML = IMGSRC[p].alt;
}
onload = function() {
IMGSRC = document.getElementById("imgsrc").getElementsByTagName("img");
DB = document.getElementById("DHTMLBOOK");
P01 = DB.getElementsByTagName("span")[0];
P01i = P01.getElementsByTagName("img")[0];
P02 = DB.getElementsByTagName("span")[1];
P02i = P02.getElementsByTagName("img")[0];
P1 = DB.getElementsByTagName("span")[2];
P1i = P1.getElementsByTagName("img")[0];
P2 = DB.getElementsByTagName("span")[3];
P2i = P2.getElementsByTagName("img")[0];
nI = IMGSRC.length;
P1i.src = IMGSRC[kI].src;
P2i.src = IMGSRC[kI].src;
titLe(kI);
DB.style.visibility = "visible";
}