如何使用jquery将类添加到tr？

Question

我正在尝试使用jquery将类添加到tr。

我尝试了各种各样的选项，但似乎没有工作..任何帮助将不胜感激。 Ñ

  //jQuery("div.flexigrid > table.flexme1 > tr").addClass("cal");

or

        jQuery("div.flexigrid > table.flexme1 > tr").addClass("sev1");
  or 
        jQuery(".erow").addClass("sev2");
   or
        jQuery(".flexigrid > tr").addClass("sev3");
   or
        jQuery(".flexigrid >tr").addClass("sev4");
   or
        jQuery(".flexigrid >tr").addClass("sev5");

上面没有一个似乎工作

我希望tr添加class =“sev”。

<div class="flexigrid">
  ..< some other divs>
... <some other divs>
---
<div class="bDiv" style="height: 200px;">
   <table cellspacing="0" cellpadding="0" border="0" class="flexme1" >
      <tbody>
         <tr  class="sev1">
            <td align="left" abbr="InstanceDisplayName8">
               <div style="text-align: left; width: 190px;">undefined</div>
            </td>
            <td align="right" abbr="severity" class="sorted">
               <div style="text-align: right; width: 40px;">&nbsp;</div>
            </td>
            <td align="right" abbr="Impact">
               <div style="text-align: right; width: 40px;">0</div>
            </td>
            <td align="right" abbr="occurrencecount">
               <div style="text-align: right; width: 40px;">undefined</div>
            </td>
            <td align="left" abbr="NotificationID">
               <div style="text-align: left; width: 100px;">Host</div>
            </td>
            <td align="left" abbr="Name">
               <div style="text-align: left; width: 120px;">Down</div>
            </td>
            <td align="right">
               <div style="text-align: right; width: 130px;">undefined</div>
            </td>
         </tr>
         <tr class="erow"  class="sev1">
            <td align="left" abbr="InstanceDisplayName8">
               <div style="text-align: left; width: 190px;">undefined</div>
            </td>
            <td align="right" abbr="severity" class="sorted">
               <div style="text-align: right; width: 40px;">&nbsp;</div>
            </td>
            <td align="right" abbr="Impact">
               <div style="text-align: right; width: 40px;">1</div>
            </td>
            <td align="right" abbr="occurrencecount">
               <div style="text-align: right; width: 40px;">undefined</div>
            </td>
            <td align="left" abbr="NotificationID">
               <div style="text-align: left; width: 100px;">Host</div>
            </td>
            <td align="left" abbr="Name">
               <div style="text-align: left; width: 120px;">Down</div>
            </td>
            <td align="right">
               <div style="text-align: right; width: 130px;">undefined</div>
            </td>
         </tr>
         <tr   class="sev3">
            <td align="left" abbr="InstanceDisplayName8">
               <div style="text-align: left; width: 190px;">undefined</div>
            </td>
            <td align="right" abbr="severity" class="sorted">
               <div style="text-align: right; width: 40px;">&nbsp;</div>
            </td>
            <td align="right" abbr="Impact">
               <div style="text-align: right; width: 40px;">0</div>
            </td>
            <td align="right" abbr="occurrencecount">
               <div style="text-align: right; width: 40px;">undefined</div>
            </td>
            <td align="left" abbr="NotificationID">
               <div style="text-align: left; width: 100px;">Host</div>
            </td>
            <td align="left" abbr="Name">
               <div style="text-align: left; width: 120px;">Down</div>
            </td>
            <td align="right">
               <div style="text-align: right; width: 130px;">undefined</div>
            </td>
         </tr>
         <tr class="erow" >
            <td align="left" abbr="InstanceDisplayName8">
               <div style="text-align: left; width: 190px;">undefined</div>
            </td>
            <td align="right" abbr="severity" class="sorted">
               <div style="text-align: right; width: 40px;">&nbsp;</div>
            </td>
            <td align="right" abbr="Impact">
               <div style="text-align: right; width: 40px;">1</div>
            </td>
            <td align="right" abbr="occurrencecount">
               <div style="text-align: right; width: 40px;">undefined</div>
            </td>
            <td align="left" abbr="NotificationID">
               <div style="text-align: left; width: 100px;">Host</div>
            </td>
            <td align="left" abbr="Name">
               <div style="text-align: left; width: 120px;">BM1M</div>
            </td>
            <td align="right">
               <div style="text-align: right; width: 130px;">undefined</div>
            </td>
         </tr>
         <tr >
            <td align="left" abbr="InstanceDisplayName8">
               <div style="text-align: left; width: 190px;">undefined</div>
            </td>
            <td align="right" abbr="severity" class="sorted">
               <div style="text-align: right; width: 40px;">&nbsp;</div>
            </td>
            <td align="right" abbr="Impact">
               <div style="text-align: right; width: 40px;">0</div>
            </td>
            <td align="right" abbr="occurrencecount">
               <div style="text-align: right; width: 40px;">undefined</div>
            </td>
            <td align="left" abbr="NotificationID">
               <div style="text-align: left; width: 100px;">Host</div>
            </td>
            <td align="left" abbr="Name">
               <div style="text-align: left; width: 120px;">Down</div>
            </td>
            <td align="right">
               <div style="text-align: right; width: 130px;">undefined</div>
            </td>
         </tr>
         <tr class="erow" >
            <td align="left" abbr="InstanceDisplayName8">
               <div style="text-align: left; width: 190px;">undefined</div>
            </td>
            <td align="right" abbr="severity" class="sorted">
               <div style="text-align: right; width: 40px;">&nbsp;</div>
            </td>
            <td align="right" abbr="Impact">
               <div style="text-align: right; width: 40px;">4</div>
            </td>
            <td align="right" abbr="occurrencecount">
               <div style="text-align: right; width: 40px;">undefined</div>
            </td>
            <td align="left" abbr="NotificationID">
               <div style="text-align: left; width: 100px;">Host</div>
            </td>
            <td align="left" abbr="Name">
               <div style="text-align: left; width: 120px;">BM1N</div>
            </td>
            <td align="right">
               <div style="text-align: right; width: 130px;">undefined</div>
            </td>
         </tr>
         <tr >
            <td align="left" abbr="InstanceDisplayName8">
               <div style="text-align: left; width: 190px;">undefined</div>
            </td>
            <td align="right" abbr="severity" class="sorted">
               <div style="text-align: right; width: 40px;">&nbsp;</div>
            </td>
            <td align="right" abbr="Impact">
               <div style="text-align: right; width: 40px;">0</div>
            </td>
            <td align="right" abbr="occurrencecount">
               <div style="text-align: right; width: 40px;">undefined</div>
            </td>
            <td align="left" abbr="NotificationID">
               <div style="text-align: left; width: 100px;">Host</div>
            </td>
            <td align="left" abbr="Name">
               <div style="text-align: left; width: 120px;">Down</div>
            </td>
            <td align="right">
               <div style="text-align: right; width: 130px;">undefined</div>
            </td>
         </tr>
         <tr class="erow" >
            <td align="left" abbr="InstanceDisplayName8">
               <div style="text-align: left; width: 190px;">undefined</div>
            </td>
            <td align="right" abbr="severity" class="sorted">
               <div style="text-align: right; width: 40px;">&nbsp;</div>
            </td>
            <td align="right" abbr="Impact">
               <div style="text-align: right; width: 40px;">0</div>
            </td>
            <td align="right" abbr="occurrencecount">
               <div style="text-align: right; width: 40px;">undefined</div>
            </td>
            <td align="left" abbr="NotificationID">
               <div style="text-align: left; width: 100px;">Host</div>
            </td>
            <td align="left" abbr="Name">
               <div style="text-align: left; width: 120px;">Down</div>
            </td>
            <td align="right">
               <div style="text-align: right; width: 130px;">undefined</div>
            </td>
         </tr>
         <tr >
            <td align="left" abbr="InstanceDisplayName8">
               <div style="text-align: left; width: 190px;">undefined</div>
            </td>
            <td align="right" abbr="severity" class="sorted">
               <div style="text-align: right; width: 40px;">&nbsp;</div>
            </td>
            <td align="right" abbr="Impact">
               <div style="text-align: right; width: 40px;">0</div>
            </td>
            <td align="right" abbr="occurrencecount">
               <div style="text-align: right; width: 40px;">undefined</div>
            </td>
            <td align="left" abbr="NotificationID">
               <div style="text-align: left; width: 100px;">Host</div>
            </td>
            <td align="left" abbr="Name">
               <div style="text-align: left; width: 120px;">Down</div>
            </td>
            <td align="right">
               <div style="text-align: right; width: 130px;">undefined</div>
            </td>
         </tr>
         <tr class="erow" >
            <td align="left" abbr="InstanceDisplayName8">
               <div style="text-align: left; width: 190px;">undefined</div>
            </td>
            <td align="right" abbr="severity" class="sorted">
               <div style="text-align: right; width: 40px;">&nbsp;</div>
            </td>
            <td align="right" abbr="Impact">
               <div style="text-align: right; width: 40px;">0</div>
            </td>
            <td align="right" abbr="occurrencecount">
               <div style="text-align: right; width: 40px;">undefined</div>
            </td>
            <td align="left" abbr="NotificationID">
               <div style="text-align: left; width: 100px;">Host</div>
            </td>
            <td align="left" abbr="Name">
               <div style="text-align: left; width: 120px;">Down</div>
            </td>
            <td align="right">
               <div style="text-align: right; width: 130px;">undefined</div>
            </td>
         </tr>
      </tbody>
   </table>
   <div class="iDiv" style="display: none;"></div>
</div>


</div><!-- end of flexidiv>

Answer 1

您没有班级flexigrid的div。你有div.bDiv

其次，表格行有错误：

class="flexme1 stype="display: none""

应该是：

class="flexme1" style="display: none"

第三，您有多个id="rowHost"元素。元素必须具有唯一ID。

Answer 2

首先，你的代码中没有div有“flexigrid”类，所以jquery不会找到你想要的东西。

现在，这应该可行

$("bDiv tr").addClass("sev1");