奇偶行高亮显示及鼠标划过高亮显示类

花了点时间,封装成了一个类(附带一个添加样式的类),适合初学者,直接调用函数即可,无需改代码.
核心JavaScript代码:

<!DOCTYPE html> 
<html> 
<head> 
<meta charset="gb2312" /> 
<title>奇或偶数行高亮<a href="/tag/xianshi/" target="_blank" class="keywords">显示</a>及鼠标划过高亮<a href="/tag/xianshi/" target="_blank" class="keywords">显示</a>类~@Mr.Think</title> 
<style> 
body{font-size:0.8em;letter-spacing:1px;font-family:"微软雅黑"; line-height:1.8em} 
h1{font-size:1em; font-weight:<a href="/tag/nor/" target="_blank" class="keywords">nor</a>mal;} 
h1 a{background:#CFF; padding:2px 3px; text-<a href="/tag/decoration/" target="_blank" class="keywords">decoration</a>:none;} 
h1 a:hover{background:#eee; text-<a href="/tag/decoration/" target="_blank" class="keywords">decoration</a>:underline} 
table#itab{border:1px solid #999; width:80%; margin:0 auto; border-collapse:collapse} 
table#itab td{border:1px solid #ccc; text-align:center;} 
table#itab caption{font-size:1em; font-weight:<a href="/tag/nor/" target="_blank" class="keywords">nor</a>mal; color:#a40000; margin-top:20px;} 
.gray{background:#eee;cursor:pointer} 
.red{background:#a40000; color:#fff; cursor:pointer} 
.highol{background:#ccf;cursor:pointer} 
ol#olid{width:80%; margin:1em auto; padding:0} 
ol#olid li{list-style:inside decimal;text-indent:5px;line-height:2.2em;} 
ol#olid em{color:#a40000;} 
</style> 
</head> 
<body> 
<script> 
//@Mr.Think---公用加载类 
function addLoadEvent(func) { 
var oldonload = window.onload; 
if (typeof window.onload != 'function') { 
window.onload = func; 
} else { 
window.onload = function() { 
oldonload(); 
func(); 
} 
} 
} 
//@Mr.Think---附加样式的类 
function addClass(elem,value){ 
if(!elem.className){ 
elem.className=value; 
}else{ 
var newClass=elem.className; 
newClass+=" "; 
newClass+=value; 
elem.className=newClass; 
} 
} 
//@Mr.Think---奇或偶数行高亮<a href="/tag/xianshi/" target="_blank" class="keywords">显示</a>及鼠标划过高亮<a href="/tag/xianshi/" target="_blank" class="keywords">显示</a> 
function highLight(elemid,tagName,tagNameHighClass,cro<a href="/tag/sst/" target="_blank" class="keywords">sst</a>agNameClass){ 
if(!document.getElementsByTagName) return false; 
if(!document.getElementById) return false; 
if(!document.getElementById(elemid)) return false; 
var elemid=document.getElementById(elemid); 
tagNames=elemid.getElementsByTagName(tagName); 
//奇数行高亮<a href="/tag/xianshi/" target="_blank" class="keywords">显示</a> 
var odd=true;//它的值决定是奇数高亮<a href="/tag/xianshi/" target="_blank" class="keywords">显示</a>还是偶数高亮<a href="/tag/xianshi/" target="_blank" class="keywords">显示</a> 
for(var i=0; i<tagNames.length; i++){ 
if(odd==true){ 
addClass(tagNames[i],tagNameHighClass) 
odd=false; 
}else{ 
odd=true; 
} 
} 
for(var m=0; m<tagNames.length; m++){ 
tagNames[m].oldClassName=tagNames[m].className; 
tagNames[m].onmou<a href="/tag/SEO/" title="SEO">SEO</a>ver=function(){ 
addClass(this,cro<a href="/tag/sst/" target="_blank" class="keywords">sst</a>agNameClass); 
} 
tagNames[m].onmou<a href="/tag/SEO/" title="SEO">SEO</a>ut=function(){ 
this.className=this.oldClassName; 
} 
} 
} 
function highLightItab(){ 
highLight("itab","tr","gray","red"); 
highLight("olid","li","highol"); 
} 
addLoadEvent(highLightItab); 
</script> 
<h1><a href="http://mrthink.net/">Mr.Think的个人博客</a>
@专注前端技术,热爱<a href="/tag/PHP/" target="_blank" class="keywords">PHP</a>,崇尚简单生活.</h1> 
<table id="itab"> 
<caption>我是高亮奇数行及鼠标划过高亮<a href="/tag/xianshi/" target="_blank" class="keywords">显示</a><a href="/tag/xiaoguo/" target="_blank" class="keywords">效果</a>,Uh Oh!</caption> 
<tr><td>1</td><td>A</td><td>C</td><td>D</td><td>Y</td></tr> 
<tr><td>2</td><td>B</td><td>S</td><td>A</td><td>E</td></tr> 
<tr><td>3</td><td>H</td><td>I</td><td>F</td><td>J</td></tr> 
<tr><td>4</td><td>A</td><td>G</td><td>A</td><td>N</td></tr> 
<tr><td>5</td><td>Z</td><td>A</td><td>G</td><td>M</td></tr> 
<tr><td>6</td><td>C</td><td>D</td><td>L</td><td>H</td></tr> 
<tr><td>7</td><td>D</td><td>W</td><td>G</td><td>S</td></tr> 
<tr><td>8</td><td>T</td><td>Q</td><td>O</td><td>M</td></tr> 
</table> 
<ol id="olid"> 
<li>可以通过改变<em>var odd=true;</em>的值来确定是高亮<a href="/tag/xianshi/" target="_blank" class="keywords">显示</a>奇数行还是偶数行;</li> 
<li>DOM编程,兼容主流浏览器,可扩展性强;</li> 
<li>适应于表格,列表,div等;</li> 
<li><em>elemid</em>:事件ID,就是你想实现这种<a href="/tag/xiaoguo/" target="_blank" class="keywords">效果</a>所在ID;</li> 
<li><em>tagName</em>:事件tagName值,比如li,tr,p等等;</li> 
<li><em>tagNameHighClass</em>:奇或偶数行高亮<a href="/tag/xianshi/" target="_blank" class="keywords">显示</a>的样式;</li> 
<li><em>cro<a href="/tag/sst/" target="_blank" class="keywords">sst</a>agNameClass<em>:鼠标划过时高亮<a href="/tag/xianshi/" target="_blank" class="keywords">显示</a>的样式.</li> 
</ol> 
</body> 
</html>

[Ctrl+A 全选注:如需引入外部Js需刷新才能执行]

参数说明:

1.elemid:事件ID,就是你想实现这种效果所在ID;
2.tagName:事件tagName值,p等等;
3.tagNameHighClass:奇或偶数行高亮显示的样式;
4.crosstagNameClass:鼠标划过时高亮显示的样式.

使用说明:

1.如果你只想要其中一个效果,在类中,删除对应的不需要的代码,有注释;
2.调用(加载函数建议用本文中的加载函数,用window.onload非明智之举):

复制代码代码如下:

 
window.onload=function highYourElem(){ 
highLight("yourId","yourTagName","yourHighClass","yourCrossClass"); 
} 

奇偶行高亮显示及鼠标划过高亮显示类

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