在HTML表格的每一行上交替CSS类

Question

I have a table with a loop on a <tr> and I want to use two CSS classes for the rows, just like the attribute rowClass for rich:dataTable .

This is may part of code:

<table>
 <c:forEach items="${MyBean.Result}" var="item">
  <tr>
   <td><h:outputText value="${item.attr}" />
   </td>
  </tr>
 </c:forEach>
</table>

How can I alternate the CSS class on each row of the HTML table?

Answer 1

tr.odd { background-color: #EEDDEE }
tr.even { background-color: #EEEEDD }

then use

<c:forEach items="${element}" var="myCollection" varStatus="loopStatus">
  <tr class="${loopStatus.index % 2 == 0 ? 'odd' : 'even'}">
     <td><h:outputText value="${item.attr}" />
     </td>
  </tr>
</c:forEach>

Answer 2

You can also use a CSS only solution:

tr:nth-child(odd): { background-color: #EEDDEE }

and

tr:nth-child(even): { background-color: #EEEEDD }

Then you won't need to create any dynamic classes from PHP. Works in all browsers, except IE8 and earlier.

See W3Schools info

Answer 3

我的首选方法是设置一个计数器并使用MOD运算符。

<tr <cfif RowCount MOD 2 EQ 1>class="even"<cfelse>class="odd"</cfif>>