JS + CSS 图片切换效果

来源：互联网发布：足球黑色三分钟知乎编辑：程序博客网时间：2024/06/04 17:41

[javascript] view plain copy

<div id="xxx">
<script>
var box =new PPTBox();
box.width = 998; //宽度
box.height = 323;//高度
box.autoplayer = 3;//自动播放间隔时间
//box.add({"url":"图片地址","title":"悬浮标题","href":"链接地址"})
box.add({"url":"images/home_27.jpg","href":"#","title":"悬浮提示标题1"})
box.add({"url":"images/home_27.jpg","href":"#","title":"悬浮提示标题2"})
box.add({"url":"images/home_27.jpg","href":"#","title":"悬浮提示标题3"})
box.add({"url":"images/home_27.jpg","href":"#","title":"悬浮提示标题4"})
box.show();
</script>
</div>

[css] view plain copy

<script type="text/javascript" src="js/pptBox.js"></script>
<style>
/* 焦点图 */
.mainbox{
overflow:hidden;
position:relative;
}
.flashbox{
overflow:hidden;
position:relative;
}
.imagebox{
text-align:center;position:relative;z-index:999;
}
.bitdiv{display:inline-block;width:18px;height:18px;margin:0 10px 10px 0px;cursor:pointer;}
.defimg{background-image:url(images/02.png)}
.curimg{background-image:url(images/01.png)}
</style>

js/pptBox.jsjs/pptBox.js 文件

[javascript] view plain copy

/**
* 网络剑客 2012-10-27
*/
function PPTBox()
{
this.uid = PPTBoxHelper.getId();
PPTBoxHelper.instance[this.uid] = this;
this._$ = function(id){return document.getElementById(id);};
this.width = 988;//宽度
this.height = 323;//高度
this.picWidth = 15;//小图宽度
this.picHeight = 12;//小图高度
this.autoplayer = 4;//自动播放间隔（秒）
this.target = "_blank";
this._box = [];
this._curIndex = 0;
}
PPTBox.prototype =
{
_createMainBox : function (){
var flashBoxWidth = this.width * this._box.length + 5;
var html="<div id='"+this.uid+"_mainbox' class='mainbox' style='width:"+(this.width)+"px;height:"+(this.height+2)+"px;'>";
html += "<div id='"+this.uid+"_flashbox' class='flashbox' style='width:"+flashBoxWidth+"px;height:"+(this.height+2)+"px;'></div>";
html += "<div id='"+this.uid+"_imagebox' class='imagebox' style='width:"+this.width+"px;height:"+(this.picHeight+2)+"px;top:-"+(this.picHeight+20)+"px;'></div>";
html += "</div>";
document.write(html);
},
_init : function (){
var picstyle= "";
var eventstr = "PPTBoxHelper.instance['"+this.uid+"']";
var imageHTML="";
var flashbox = "";
for(var i=0;i<this._box.length;i++){
var parame = this._box[i];
flashbox += this.flashHTML(parame.url,this.width,this.height,i);
imageHTML ="<div class='bitdiv "+((i==0)?"curimg":"defimg")+"' title ="+parame.title+" src='bit01.gif' "+picstyle+" onclick = \""+eventstr+".clickPic("+i+")\" onmouseover=\""+eventstr+".mouseoverPic("+i+")\"></div>" + imageHTML;
}
this._$(this.uid+"_flashbox").innerHTML = flashbox;
this._$(this.uid+"_imagebox").innerHTML = imageHTML;
},
_play : function(){
clearInterval(this._autoplay);
var idx = this._curIndex+1;
if(idx>=this._box.length){idx=0;}
this.changeIndex(idx);
var eventstr = "PPTBoxHelper.instance['"+this.uid+"']._play()";
this._autoplay = setInterval(eventstr,this.autoplayer*1000);
},
flashHTML : function(url,width,height,idx) {
var isFlash = url.substring(url.lastIndexOf('.')+1).toLowerCase()=="swf";
var html = "";
if(isFlash){
html = "<object classid='clsid:D27CDB6E-AE6D-11cf-96B8-444553540000' "
+ "codebase='http://download.macromedia.com/pub/shockwave/cabs/flash/swflash.cab#version=7,0,19,0' width='"+width+"' height='"+height+"'>"
+ "<param name=\"movie\" value=\""+url+"\" />"
+ "<param name='quality' value='high' />"
+ "<param name='wmode' value='transparent'>"
+ "<embed src='"+url+"' quality='high' wmode='opaque' pluginspage='http://www.macromedia.com/go/getflashplayer'"
+" type='application/x-shockwave-flash' width="+width+" height='"+height+"'></embed>"
+" </object>";
} else {
var eventstr = "PPTBoxHelper.instance['"+this.uid+"']";
var style = "";
if(this._box[idx].href){
style = "cursor:pointer"
}
html="<img src='"+url+"' style='width:"+width+"px;height:"+height+"px;"+style+"' onclick = \""+eventstr+".clickPic("+idx+")\"/>";
}
return html;
},
changeIndex : function(idx){
var parame = this._box[idx];
moveElement(this.uid+"_flashbox",-(idx*this.width),1);
var imgs = this._$(this.uid+"_imagebox").getElementsByTagName("div");
imgs[this._box.length-1-this._curIndex].className = "bitdiv defimg";
imgs[this._box.length-1-idx].className = "bitdiv curimg";
this._curIndex = idx;
},
mouseoverPic:function(idx){
this.changeIndex(idx);
if(this.autoplayer>0){
clearInterval(this._autoplay);
var eventstr = "PPTBoxHelper.instance['"+this.uid+"']._play()";
this._autoplay = setInterval(eventstr,this.autoplayer*1000);
}
},
clickPic:function(idx){
var parame = this._box[idx];
if(parame.href&¶me.href!=""){
window.open(parame.href,this.target);
}
},
add:function (imgParam){
this._box[this._box.length] = imgParam;
},
show : function () {
this._createMainBox();
this._init();
if(this.autoplayer>0){
var eventstr = "PPTBoxHelper.instance['"+this.uid+"']._play()";
this._autoplay = setInterval(eventstr,this.autoplayer*1000);
}
}
}
var PPTBoxHelper =
{
count: 0,
instance: {},
getId: function() { return '_ppt_box-' + (this.count++); }
};
function moveElement(elementID,final_x,interval) {
if (!document.getElementById) return false;
if (!document.getElementById(elementID)) return false;
var elem = document.getElementById(elementID);
if (elem.movement) {
clearTimeout(elem.movement);
}
if (!elem.style.left) {
elem.style.left = "0px";
}
var xpos = parseInt(elem.style.left);
if (xpos == final_x ) {
return true;
}
if (xpos < final_x) {
var dist = Math.ceil((final_x - xpos)/5);
xpos = xpos + dist;
}
if (xpos > final_x) {
var dist = Math.ceil((xpos - final_x)/5);
xpos = xpos - dist;
}
elem.style.left = xpos + "px";
var repeat = "moveElement('"+elementID+"',"+final_x+","+interval+")";
elem.movement = setTimeout(repeat,interval);
}

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