Of Stack

Native JS Realizes Picture Book Turning Effect

  • 2021-07-21 07:17:18
  • OfStack

Let's share the picture book turning effect based on the native js. The specific code is as follows: 


<html xmlns="http://www.w3.org/1999/xhtml">
<head>
  <meta http-equiv="Content-Type" content="text/html; charset=gb2312" />
  <title>JS Realize the picture book turning effect - Lazy Man Gallery </title>
  <META http-equiv=imagetoolbar content=no>
  <STYLE type=text/css>
    #center {
      LEFT: 50%; POSITION: absolute; TOP: 50%
    }
    #DHTMLBOOK {
      BACKGROUND: #000; LEFT: -210px; VISIBILITY: hidden; WIDTH: 420px; POSITION: relative; TOP: -160px; HEIGHT: 320px
    }
    #TXTBOX {
      FONT-SIZE: 0.8em; WIDTH: 410px; COLOR: #aba193; FONT-FAMILY: verdana; POSITION: absolute; TOP: 320px; 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%
    }
  </STYLE>
  <SCRIPT type=text/javascript><!--
  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) {
    debugger
    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() {
    debugger
    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";
  }
  //-->
  </SCRIPT>
  <META content="MSHTML 6.00.6000.16809" name=GENERATOR></HEAD>
<BODY>
<DIV id=center>
  <DIV id=DHTMLBOOK><SPAN class=page onMouseDown="return false;" ondblclick=TPL(); onclick=TPL();><IMG class=img></SPAN>
    <SPAN class="page right" onmousedown="return false;" ondblclick=TPR(); onclick=TPR();><IMG class=img style="LEFT: -100%"></SPAN>
    <SPAN class="page turn" onMouseDown="return false;" ondblclick=TPL(); onclick=TPL();><IMG class=img style="FILTER: alpha(); opacity: 1"></SPAN>
    <SPAN class="page turn right" onmousedown="return false;" ondblclick=TPR(); onclick=TPR();><IMG class=img style="FILTER: alpha(); LEFT: -100%; opacity: 1"></SPAN>
    <DIV id=TXTBOX></DIV></DIV></DIV>
<DIV id=imgsrc style="VISIBILITY: hidden">
  <IMG alt="In the early morning he departed." src="http://www.lanrentuku.com/down/js/images/12499727220.jpg">
  <IMG alt="Believing she had dreamed of the roar of his bike," src="http://www.lanrentuku.com/down/js/images/12499727221.jpg">
  <IMG alt="she woke up to the sunshine in her eyelids." src="http://www.lanrentuku.com/down/js/images/12499727222.jpg">
</DIV>
</BODY></HTML>
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