JS实现的多张图片轮流播放幻灯片效果

本文实例讲述了JS实现的多张图片轮流播放幻灯片效果。分享给大家供大家参考，具体如下：

<body style="width: 715px; height: 95px;">
<script language="javascript" type="text/javascript">
<!--
/**************************************************
名称: 图片轮播类
创建时间: 2010-07-11  zhangty
示例:
  页面中已经存在名为imgPlayer(或者别的ID也行)的节点.
  PImgPlayer.addItem( "test", "http://www.pomoho.com", "http://static.pomoho.com/static/samesong/images/logo5.jpg");
  PImgPlayer.addItem( "test2", "http://www.pomoho.com.cn", "http://static.pomoho.com/static/samesong/images/logo4.jpg");
  PImgPlayer.addItem( "test3", "http://www.pomoho.com.cn", "http://static.pomoho.com/static/samesong/images/logo3.jpg");
  PImgPlayer.init( "imgPlayer", 200, 230 );
备注:
  适用于一个页面只有一个图片轮播的地方.
***************************************************/
var PImgPlayer = {
  _timer : null,
  _items : [],
  _container : null,
  _index : 0,
  _imgs : [],
  intervalTime : 5000,  //轮播间隔时间
  init : function( objID, w, h, time ){
    this.intervalTime = time || this.intervalTime;
    this._container = document.getElementById( objID );
    this._container.style.display = "block";
    this._container.style.width = w + "px";
    this._container.style.height = h + "px";
    this._container.style.position = "relative";
    this._container.style.overflow = "hidden";
    //this._container.style.border = "1px solid #fff";
    var linkStyle = "display: block; TEXT-DECORATION: none;";
    if( document.all ){
      linkStyle += "FILTER:";
      linkStyle += "progid:DXImageTransform.Microsoft.Barn(duration=0.5, motion='out', orientation='vertical') ";
      linkStyle += "progid:DXImageTransform.Microsoft.Barn ( duration=0.5,motion='out',orientation='horizontal') ";
      linkStyle += "progid:DXImageTransform.Microsoft.Blinds ( duration=0.5,bands=10,Direction='down' )";
      linkStyle += "progid:DXImageTransform.Microsoft.CheckerBoard()";
      linkStyle += "progid:DXImageTransform.Microsoft.Fade(duration=0.5,overlap=0)";
      linkStyle += "progid:DXImageTransform.Microsoft.GradientWipe ( duration=1,gradientSize=1.0,motion='reverse' )";
      linkStyle += "progid:DXImageTransform.Microsoft.Inset ()";
      linkStyle += "progid:DXImageTransform.Microsoft.Iris ( duration=1,irisStyle=PLUS,motion=out )";
      linkStyle += "progid:DXImageTransform.Microsoft.Iris ( duration=1,irisStyle=PLUS,motion=in )";
      linkStyle += "progid:DXImageTransform.Microsoft.Iris ( duration=1,irisStyle=DIAMOND,motion=in )";
      linkStyle += "progid:DXImageTransform.Microsoft.Iris ( duration=1,irisStyle=SQUARE,motion=in )";
      linkStyle += "progid:DXImageTransform.Microsoft.Iris ( duration=0.5,irisStyle=STAR,motion=in )";
      linkStyle += "progid:DXImageTransform.Microsoft.RadialWipe ( duration=0.5,wipeStyle=CLOCK )";
      linkStyle += "progid:DXImageTransform.Microsoft.RadialWipe ( duration=0.5,wipeStyle=WEDGE )";
      linkStyle += "progid:DXImageTransform.Microsoft.RandomBars ( duration=0.5,orientation=horizontal )";
      linkStyle += "progid:DXImageTransform.Microsoft.RandomBars ( duration=0.5,orientation=vertical )";
      linkStyle += "progid:DXImageTransform.Microsoft.RandomDissolve ()";
      linkStyle += "progid:DXImageTransform.Microsoft.Spiral ( duration=0.5,gridSizeX=16,gridSizeY=16 )";
      linkStyle += "progid:DXImageTransform.Microsoft.Stretch ( duration=0.5,stretchStyle=PUSH )";
      linkStyle += "progid:DXImageTransform.Microsoft.Strips ( duration=0.5,motion=rightdown )";
      linkStyle += "progid:DXImageTransform.Microsoft.Wheel ( duration=0.5,spokes=8 )";
      linkStyle += "progid:DXImageTransform.Microsoft.Zigzag ( duration=0.5,gridSizeX=4,gridSizeY=40 ); width: 100%; height: 100%";
    }
    //
    var ulStyle = "margin:0;width:"+w+"px;position:absolute;z-index:999;right:5px;FILTER:Alpha(Opacity=30,FinishOpacity=90, Style=1);overflow: hidden;bottom:-1px;height:16px; border-right:1px solid #fff;";
    //
    var liStyle = "margin:0;list-style-type: none; margin:0;padding:0; float:right;";
    //
    var baseSpacStyle = "clear:both; display:block; width:23px;line-height:18px; font-size:12px; FONT-FAMILY:'宋体';opacity: 0.6;";
    baseSpacStyle += "border:1px solid #fff;border-right:0;border-bottom:0;";
    baseSpacStyle += "color:#fff;text-align:center; cursor:pointer; ";
    //
    var ulHTML = "";
    for(var i = this._items.length -1; i >= 0; i--){
      var spanStyle = "";
      if( i==this._index ){
        spanStyle = baseSpacStyle + "background:#ff0000;"; //初始化底部数字的颜色
      } else {
        spanStyle = baseSpacStyle + "background:#c0c0c0;"; //初始化底部数字的背景颜色
      }
      ulHTML += "<li style=\""+liStyle+"\">";
      ulHTML += "<span onmouseover=\"PImgPlayer.mouseOver(this);\" onmouseout=\"PImgPlayer.mouseOut(this);\" style=\""+spanStyle+"\" onclick=\"PImgPlayer.play("+i+");return false;\" herf=\"javascript:;\" title=\"" + this._items[i].title + "\">" + (i+1) + "</span>";
      ulHTML += "</li>";
    }
    //
    var html = "<a href=\""+this._items[this._index].link+"\" title=\""+this._items[this._index].title+"\" target=\"_blank\" style=\""+linkStyle+"\"></a><ul style=\""+ulStyle+"\">"+ulHTML+"</ul>";
    this._container.innerHTML = html;
    var link = this._container.getElementsByTagName("A")[0];
    link.style.width = w + "px";
    link.style.height = h + "px";
    link.style.background = 'url(' + this._items[0].img + ') no-repeat center center';
    //
    this._timer = setInterval( "PImgPlayer.play()", this.intervalTime );
  },
  addItem : function( _title, _link, _imgURL ){
    this._items.push ( {title:_title, link:_link, img:_imgURL } );
    var img = new Image();
    img.src = _imgURL;
    this._imgs.push( img );
  },
  play : function( index ){
    if( index!=null ){
      this._index = index;
      clearInterval( this._timer );
      this._timer = setInterval( "PImgPlayer.play()", this.intervalTime );
    } else {
      this._index = this._index<this._items.length-1 ? this._index+1 : 0;
    }
    var link = this._container.getElementsByTagName("A")[0];
    if(link.filters){
      var ren = Math.floor(Math.random()*(link.filters.length));
      link.filters[ren].Apply();
      link.filters[ren].play();
    }
    link.href = this._items[this._index].link;
    link.title = this._items[this._index].title;
    link.style.background = 'url(' + this._items[this._index].img + ') no-repeat center center';
    //
    var liStyle = "margin:0;list-style-type: none; margin:0;padding:0; float:right;";
    var baseSpacStyle = "clear:both; display:block; width:23px;line-height:18px; font-size:12px; FONT-FAMILY:'宋体'; opacity: 0.6;";
    baseSpacStyle += "border:1px solid #fff;border-right:0;border-bottom:0;";
    baseSpacStyle += "color:#fff;text-align:center; cursor:pointer; ";
    var ulHTML = "";
    for(var i = this._items.length -1; i >= 0; i--){
      var spanStyle = "";
      if( i==this._index ){
        spanStyle = baseSpacStyle + "background:#ff0000;";    //数字的颜色
      } else {
        spanStyle = baseSpacStyle + "background:#c0c0c0;";    //数字的背景颜色
      }
      ulHTML += "<li style=\""+liStyle+"\">";
      ulHTML += "<span onmouseover=\"PImgPlayer.mouseOver(this);\" onmouseout=\"PImgPlayer.mouseOut(this);\" style=\""+spanStyle+"\" onclick=\"PImgPlayer.play("+i+");return false;\" herf=\"javascript:;\" title=\"" + this._items[i].title + "\">" + (i+1) + "</span>";
      ulHTML += "</li>";
    }
    this._container.getElementsByTagName("UL")[0].innerHTML = ulHTML;
  },
  mouseOver : function(obj){
    var i = parseInt( obj.innerHTML );
    if( this._index!=i-1){
      obj.style.color = "#ff0000";
    }
  },
  mouseOut : function(obj){
    obj.style.color = "#fff";
  }
}
-->
</script>
<div id="imgADPlayer"></div>
<script>
  PImgPlayer.addItem( "拉手网", "http://www.lashou.com/", "./images/1001.jpg");
  PImgPlayer.addItem( "糯米网", "http://www.nuomi.com/", "./images/1002.jpg");
  PImgPlayer.addItem( "美团网", "http://www.meituan.com/", "./images/1003.jpg");
  PImgPlayer.init( "imgADPlayer", 715, 95 );
</script>
</body>

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希望本文所述对大家JavaScript程序设计有所帮助。