H5 imitation flash effect example-JS Tutorial-php.cn

H5 imitation flash effect example

小云云

Release： 2018-01-27 16:59:09

Original

1735 people have browsed it

This article mainly introduces the relevant information about the implementation code of H5 to achieve imitation flash effect. I hope this article can help everyone realize such a function. Friends who need it can refer to it. I hope it can help everyone.

H5 implementation code for imitating flash effect

With the popularity of H5, flash will be replaced by H5. How to use H5 to achieve flash effect? ? I made a simple little thing to share with you.

html and js part:

<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <title>Title</title>
  <script type="text/javascript" src="jsByKing.js"></script>
  <link rel="stylesheet" href="仿flash的css.css" rel="external nofollow" >
  <script>
    function getByClass(oParent,sClass) {
      var aEle=oParent.getElementsByTagName(&#39;*&#39;);
      var aResult=[];
      for(var i=0;i<aEle.length;i++){
        if(aEle[i].className==sClass){
          aResult.push(aEle[i]);
        }
      }
      return aResult;
    }
    //左右箭头
    window.onload=function () {
      var op=document.getElementById(&#39;playimages&#39;);
      var oBtnPrev=getByClass(op,&#39;prev&#39;)[0];
      var oBtnNext=getByClass(op,&#39;next&#39;)[0];
      var oMarkLeft=getByClass(op,&#39;mark_left&#39;)[0];
      var oMarkRight=getByClass(op,&#39;mark_right&#39;)[0];

      var opSmall=getByClass(op,&#39;small_pic&#39;)[0];
      var oUlSmall=opSmall.getElementsByTagName(&#39;ul&#39;)[0];
      var aLiSmall=opSmall.getElementsByTagName(&#39;li&#39;);

      var oUlBig=getByClass(op,&#39;big_pic&#39;)[0];
      var aLiBig=oUlBig.getElementsByTagName(&#39;li&#39;);

      var nowZIndex=2;

      var now=0;

      oUlSmall.style.width=aLiSmall.length*aLiSmall[0].offsetWidth+&#39;px&#39;;

      oBtnPrev.onmouseover=oMarkLeft.onmouseover=function () {
        startMove(oBtnPrev,&#39;opacity&#39;,100);
      };
      oBtnPrev.onmouseout=oMarkLeft.onmouseout=function () {
        startMove(oBtnPrev,&#39;opacity&#39;,0);
      }
      oBtnNext.onmouseover=oMarkRight.onmouseover=function () {
        startMove(oBtnNext,&#39;opacity&#39;,100);
      };
      oBtnNext.onmouseout=oMarkRight.onmouseout=function () {
        startMove(oBtnNext,&#39;opacity&#39;,0);
      }

      //大图切换
      for(var i=0; i<aLiSmall.length;i++){
        aLiSmall[i].index=i;
        aLiSmall[i].onclick=function () {
          if(this.index==now)return;

          now=this.index;

          tab();

        aLiSmall[i].onmouseover=function () {
          startMove(this,&#39;opacity&#39;,100);
        }
        aLiSmall[i].onmouseout=function () {
          if(this.index!=now){
            startMove(this,&#39;opacity&#39;,60)
          }
        }
      }
      function tab() {
        aLiBig[now].style.zIndex=nowZIndex++;

        for(var i=0;i<aLiSmall.length;i++){
          startMove(aLiSmall[i],&#39;opacity&#39;,60);
        }

        startMove(aLiSmall[now],&#39;opacity&#39;,100);

        aLiBig[now].style.height=0;
        startMove(aLiBig[now],&#39;height&#39;,320);

        if(now==0){
          startMove(oUlSmall,&#39;left&#39;,0);
        }
        else if(now==aLiSmall.length-1){
          startMove(oUlSmall,&#39;left&#39;,-(now-2)*aLiSmall[0].offsetWidth);
        }

        else {
          startMove(oUlSmall,&#39;left&#39;, -(now-1)*aLiSmall[0].offsetWidth);
        }
      };

      }
      oBtnPrev.onclick=function () {
        now--;
        if(now==-1){
          now=aLiSmall.length-1;
        }
        tab();
      };
      oBtnNext.onclick=function () {
        now++;
        if(now==aLiSmall.length){
          now=0;
        }
        tab();
      }
      var timer=setInterval(oBtnNext.onclick,2000);

      op.onmouseover=function () {
        clearInterval(timer);
      }
      op.onmouseout=function () {
        timer=setInterval(oBtnNext.onclick,2000);
      }
    }
  </script>
</head>
<body>
<p id="playimages" class="play">
  <ul class="big_pic">
    <p class="prev"></p>
    <p class="next"></p>

    <p class="text">加载图片说明.....</p>
    <p class="length">计算图片数量.....</p>

    <a class="mark_left" href="javascript:;" rel="external nofollow" rel="external nofollow" ></a>
    <a class="mark_right" href="javascript:;" rel="external nofollow" rel="external nofollow" ></a>
    <p class="bg"></p>

    <li style="z-index: 1;"><img src="../../img/练习/1.jpg" alt=""></li>
    <li><img src="../../img/练习/2.jpg" alt=""></li>
    <li><img src="../../img/练习/3.jpg" alt=""></li>
    <li><img src="../../img/练习/4.jpg" alt=""></li>
    <li><img src="../../img/练习/5.jpg" alt=""></li>
    <li><img src="../../img/练习/6.jpg" alt=""></li>
  </ul>
  <p class="small_pic">
    <ul style="width: 390px;">
      <li style="opacity: 1"><img src="../../img/练习/1.jpg" alt=""></li>
      <li><img src="../../img/练习/2.jpg" alt=""></li>
      <li><img src="../../img/练习/3.jpg" alt=""></li>
      <li><img src="../../img/练习/4.jpg" alt=""></li>
      <li><img src="../../img/练习/5.jpg" alt=""></li>
      <li><img src="../../img/练习/6.jpg" alt=""></li>
    </ul>
  </p>
</p>
</body>
</html>

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css part:

body{
  background: #666;
}
ul{
  padding: 0;
  margin: 0;
}
li{
  list-style: none;
}
img{
  border:0;
  width: 100%;
  height: 100%;
}
.play{
  width: 400px;
  height: 430px;
  margin: 50px auto 0;
  background: #999;
  font: 12px Arial;

}
.big_pic{
  width: 400px;
  height: 320px;
  overflow: hidden;
  border-bottom: 1px solid #ccc;
  background: #222;
  position: relative;
}
.big_pic img{
  width: 400px;
  height: 320px;
}
.big_pic li{
  width: 400px;
  height: 320px;
  overflow: hidden;
  position: absolute;
  top:0;
  left:0;
  z-index: 0;
}
.mark_left{
   width: 200px;
   height: 320px;
   position: absolute;
   left: 0;
   top:0;
   /*background: red;*/
   opacity: 0;
  z-index: 3000;
 }
.mark_right{
  width: 200px;
  height: 320px;
  position: absolute;
  left: 200px;
  top:0;
  /*background: green;*/
  opacity: 0;
  z-index: 3000;
}
.big_pic .prev{
  width: 60px;
  height: 60px;
  background-image: url("../../img/练习/left.jpg");
  background-size: cover;
  position: absolute;
  top: 130px;
  left: 10px;
  z-index: 3001;
  opacity: 0;
  cursor: pointer;
}
.big_pic .next{
  width: 60px;
  height: 60px;
  background-image: url("../../img/练习/right.jpg");
  background-size: cover;
  background-position: 65px 60px;
  position: absolute;
  top: 130px;
  right: 10px;
  z-index: 3001;
  opacity: 0;
  cursor: pointer;
}
.big_pic .text{
  position: absolute;
  left: 10px;
  bottom: 4px;
  z-index: 3000;
  color: #ccc;
}
.big_pic .length{
  position: absolute;
  right: 10px;
  bottom: 4px;
   z-index: 3000;
  color: #ccc;
}
.big_pic .bg{
  width: 400px;
  height: 25px;
  background: #000;
  opacity: 0.6;
  position: absolute;
  z-index: 2999;
  bottom: 0;
  left:0;
}
.small_pic{
  width: 380px;
  height: 94px;
  position: relative;
  top: 7px;
  left: 10px;
  overflow: hidden;
}
.small_pic ul{
  height: 94px;
  position: absolute;
  top:0;
  left: 0;
}
.small_pic li{
  width: 120px;
  height: 94px;
  float: left;
  padding-right: 10px;
  cursor: pointer;
  opacity: 0.6;
}

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Rendering display:

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