关于 onblur和onfouse 问题 新手求指教

Question

为什么  input的 onfouse 和 onblur  为什么有时候用不了  ？？  我前段时间做完测试还是可以弄的  但是今天重新试了下  发下就用不了？？                   <input ID="TxteachID" runat="server" 
                     onblur="topicApply_teachID_check(); document.getElementById('topicApply_teachID_Stat').className = 'tip_off'" 
                     onfocus="document.getElementById('topicApply_teachID_Stat').className = 'tip_on '" 
                     type="text" />
                 <input ID="TxteachName" runat="server" 
                     onblur="topicApply_teachName_check(); document.getElementById('topicApply_teachName_Stat').className = 'tip_off'" 
                     onfocus="document.getElementById('topicApply_teachName_Stat').className = 'tip_on '" 
                     type="text" />这里的 onblur属性就是触发不了！！！！！ 
   

Answer 1

触发是肯定可以触发的，检查你写的js。
topicApply_teachID_check();   这个里面的内容？

Answer 2

检查了  这个函数是出发不了的 我在里面加了alert() ； 但是没有任何反应

Answer 3

JS
     //工号检验
     function topicApply_teachID_check()
     {
        var id= document.getElementById('TxteachID').value;
        if( id == null || id == "")
        {
          document.getElementById('topicApply_teachID_Stat').innerHTML = "<font color = red>"+TopicApply_TeachID_IsNull + "</font>";
          return;
        }
        
        
        var url = "server/apply_check.aspx?action=teach_id&id="+ escape(id)+"&time=" + Math.random();
          
        TunnelRequest.Get( url,topicApply_teachID_check_Callback);
     }HTML
          <tr>
             <td class="style2"><span>教师工号</span>
             </td>
             <td class="style4">
                 <input ID="TxteachID" runat="server" 
                     onblur="topicApply_teachID_check(); document.getElementById('topicApply_teachID_Stat').className = 'tip_off'" 
                     onfocus="document.getElementById('topicApply_teachID_Stat').className = 'tip_on '" 
                     type="text" />&nbsp;</td>
            <td id="topicApply_teachID_Stat" class=" tip_off"></td>
          </tr>

Answer 4

是可以触发的！
提示：TopicApply_TeachID_IsNull没定义！！

Answer 5

代码看起来没问题，你用ff的firebug看下哪里出错。

Answer 6

事件是绝对触发了，你alert是加到哪里了，这样加看看：
 <input ID="TxteachID" runat="server" 
                     onblur="alert('ceshi');topicApply_teachID_check(); document.getElementById('topicApply_teachID_Stat').className = 'tip_off'" 
                     onfocus="alert('ceshi');document.getElementById('topicApply_teachID_Stat').className = 'tip_on '" 
                     type="text" />&nbsp;