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JS implementation of image highlighting display effect example_javascript skills

WBOYOriginal: 2016-05-16 15:30:061353browse

The example in this article describes the method of using JS to achieve the effect of image highlighting. Share it with everyone for your reference, the details are as follows:

Yesterday, my friend asked me to help create a picture highlighting effect. Although it is not difficult, it is very creative:

<!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>name</title>
<style type="text/css">
*{}{margin:0; padding:0;}
a img{}{border:none;}
#imagesBox {}{ width:165px; height:110px; position:relative; left:100px; top:100px; z-index:1; border:1px solid black; background-color:white;}
#trans{}{ width:165px; height:110px; position:absolute; left:0; top:0; z-index:2; display:none; opacity:0.5; filter:alpha(opacity=50); background-color:black;}
#imagesBox li {}{ width:55px; height:55px; float:left; overflow:hidden;}
#imagesBox li a,#imagesBox li img {}{ width:55px; height:55px; display:block; cursor:pointer;}
#imagesBox li img{}{ position:relative;}
#imagesBox strong{}{position:absolute;left:0; top:50%; margin-top:-7px; z-index:999; display:block; color:white; width:100%; height:15px; text-align:center; z-index:999;} 
</style>
<script type="text/javascript">
  function gallery(obj){
    var tit=obj.getAttribute("alt");  
    document.getElementById("show_tit").firstChild.nodeValue=tit;
    document.getElementById("trans").style.display='block';
    obj.style.zIndex="3";
  }
  function clearBg(obj){
    document.getElementById("show_tit").firstChild.nodeValue="";
    document.getElementById("trans").style.display='none';
    obj.style.zIndex="1";
  }
</script>
</head>
<body>
<div id="imagesBox"> 
  <ul>
  <li><a href="#" title="名称1"><img onmouseover="gallery(this);" onmouseout="clearBg(this)" src="/images/artist//12053006018793_3.jpg" height="55" width="55" alt="名称1"/><span></span></a></li>
  <li><a href="#" title="名称2"><img onmouseover="gallery(this);" onmouseout="clearBg(this)" src="/images/artist//12053006018793_3.jpg" height="55" width="55" alt="名称2"/><span></span></a></li>
  <li><a href="#" title="名称3"><img onmouseover="gallery(this);" onmouseout="clearBg(this)" src="/images/artist//12053006018793_3.jpg" height="55" width="55" alt="名称3"/><span></span></a></li>
  <li><a href="#" title="名称4"><img onmouseover="gallery(this);" onmouseout="clearBg(this)" src="/images/artist//12053006018793_3.jpg" height="55" width="55" alt="名称4"/><span></span></a></li>
  <li><a href="#" title="名称5"><img onmouseover="gallery(this);" onmouseout="clearBg(this)" src="/images/artist//12053006018793_3.jpg" height="55" width="55" alt="名称5"/><span></span></a></li>
  <li><a href="#" title="名称6"><img onmouseover="gallery(this);" onmouseout="clearBg(this)" src="/images/artist//12053006018793_3.jpg" height="55" width="55" alt="名称6"/><span></span></a></li>
 </ul>
<div id="trans"> </div>
<strong id="show_tit"> </strong>
</div>
</body>
</html>

At first, because I didn’t fully understand the design intention, I accidentally created this effect:

<!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>name</title>
<style type="text/css">
*{margin:0; padding:0;}
a img{border:none;}
#imagesBox { width:165px; height:100px; position:relative; left:100px; top:100px;}
#imagesBox li { width:55px; height:55px; float:left; overflow:hidden; position:relative;}
#imagesBox li img { width:55px; height:55px; position:relative; z-index:2; }
#imagesBox li span { line-height:100px; background:#000; position:absolute; top:0; left:0; z-index:3; opacity:0.5; filter:alpha(opacity=50); 
display:block; width:55px; height:55px;}
#imagesBox li a:hover span{display:none;} 
#imagesBox strong{position:absolute;left:0; top:50%; margin-top:-7px; z-index:999; display:block; color:white; width:100%; height:15px; text-
align:center;} 
</style>
<script type="text/javascript">
  function gallery(obj){
    var tit=obj.getAttribute("title");  
    document.getElementById("show_tit").firstChild.nodeValue=tit;
    document.getElementById("imagesBox").onmouseout=function(){document.getElementById("show_tit").firstChild.nodeValue="这里显示
名字"};
  }
</script>
</head>
<body>
<div id="imagesBox">
 <ul>
  <li><a href="#" onmouseover="gallery(this);" title="名称1"><img src="/images/artist//12053006018793_3.jpg" height="55" 
width="55" alt="名称1"/><span></span></a></li>
  <li><a href="#" onmouseover="gallery(this);" title="名称2"><img src="/images/artist//12053006018793_3.jpg" height="55" 
width="55" alt="名称2"/><span></span></a></li>
  <li><a href="#" onmouseover="gallery(this);" title="名称3"><img src="/images/artist//12053006018793_3.jpg" height="55" 
width="55" alt="名称3"/><span></span></a></li>
  <li><a href="#" onmouseover="gallery(this);" title="名称4"><img src="/images/artist//12053006018793_3.jpg" height="55" 
width="55" alt="名称4"/><span></span></a></li>
  <li><a href="#" onmouseover="gallery(this);" title="名称5"><img src="/images/artist//12053006018793_3.jpg" height="55" 
width="55" alt="名称5"/><span></span></a></li>
  <li><a href="#" onmouseover="gallery(this);" title="名称6"><img src="/images/artist//12053006018793_3.jpg" height="55" 
width="55" alt="名称6"/><span></span></a></li>
 </ul>
 <strong id="show_tit">这里显示名字</strong>
</div>
</body>
</html>

I hope this article will be helpful to everyone in JavaScript programming.

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