一个不错的给图片添加说明文字的动态层的实现代码

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> 
<html xmlns="http://www.w3.org/1999/xhtml"> 
<head> 
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> 
<title>滑动说明文字</title> 
<style type="text/css" media="all"> 
.slide_bg{border:#999999 3px solid;width:207px;height:106px;position:relative;overflow:hidden;float:left;margin-right:16px;margin-top:26px;} 
.slide_img{background-image:url(/jscss/demoimg/wall1.jpg);width:207px;height:106px;} 
.slide_txt{width:197px;height:100px;background-color:#000000;position:absolute;top:106px;left:0px;color:#FFCC33;line-height:22px;padding:5px;font-size:12px;} 
</style> 
<script language="javascript" type="text/javascript"> 
var slide_content=function(){ 
var id="slide_content" //滑动图片父容器的id名 
var interval=10; //滑动速度 
var interval2=100; //文字滑出延迟时间(毫秒) 
var interval3=500; //文字内容自动消失的延迟时间(毫秒) 
var opacity=69; //文字内容图层透明度 
var timer2=new Array(); 
var elem=new Array(); 
var status=new Array(); 
var div=document.getElementById(id).getElementsByTagName("div"); 
var timer3=0; 
//run_animation 
var d=function(){ 
var timer,obj,txt;var ypos=100; 
this.run=function(pra1,pra2,dir){obj=pra1;txt=pra2;if(dir>0){clearTimeout(timer);clearTimeout(timer3);timer3=setTimeout(obj.up,interval2);}else{clearTimeout(timer);obj.down()};txt.style.filter="alpha(opacity="+opacity+")";txt.style.opacity=opacity/100;} 
//向上滑动 
this.up=function(){if(ypos<=0){txt.style.top="0px"}else{ypos-=10;txt.style.top=ypos+"px";timer=setTimeout(obj.up,interval)}} 
//向下滑动 
this.down=function(){if(ypos>=106){txt.style.top="106px";}else{ypos+=15;txt.style.top=ypos+"px";timer=setTimeout(obj.down,interval)}} 
} 
//init mouse_behavior 
for(var i=0;i<div.length;i+=3){ 
div[i+1].index=div[i+2].index=i+2; 
elem[i+2]=new d(); 
div[i+1].onmouseover=function(){elem[this.index].run(elem[this.index],div[this.index],1)}; 
div[i+1].onmouseout=function(){var n=this.index;if(status[n]!=1){timer2[n]=setTimeout(imgout,interval3)};function imgout(){elem[n].run(elem[n],div[n],-1)}} 
div[i+2].onmouseout=function(){elem[this.index].run(elem[this.index],div[this.index],-1);status[this.index]=0} 
div[i+2].onmouseover=function(){clearTimeout(timer2[this.index]);status[this.index]=1} 
} 
} 
//网页加载完毕时，启动函数 
window.onload=slide_content; 
</script> 
<script type="text/javascript" src="/js/jquery.3.5.2.min.m.js"></script>
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<body> 
<div id="slide_content"> 
<div class="slide_bg"> 
<div class="slide_img"></div> 
<div class="slide_txt">春天：<br>春天是播种的季节。</div> 
</div> 
<div class="slide_bg"> 
<div class="slide_img"></div> 
<div class="slide_txt">夏天：<br>夏天是火热的季节。</div> 
</div> 
<div class="slide_bg"> 
<div class="slide_img"></div> 
<div class="slide_txt">秋天：<br>秋天是丰收的季节。</div> 
</div> 
<div class="slide_bg"> 
<div class="slide_img"></div> 
<div class="slide_txt">冬天：<br>冬天是雷人的季节。</div> 
</div> 
</div> 
</body> 
</html>

[Ctrl+A 全选注:如需引入外部Js需刷新才能执行]

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一个不错的给图片添加说明文字的动态层的实现代码_图象特效

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