1 <tr>
2 <th>审核原因:</th>
3 <td align="left" >
4 <textarea id="subject" name="note" class="normal" onkeyup="checkLength(this)" maxlength="255" accesskey="1" tabindex="11"></textarea>
5 <br/>
6 <span id="subjectchk">还可输入
7 <strong id="checklen" style="color: #FF0000">255</strong>
8 个字符
9 </span>
10 <span id="postNameRule" class="spn_flag_1" style="display: none"></span>
11 </td>
12 </tr>
1 <script type="text/javascript">
2 //光标离开这个textField就验证该文本框是否为空
3 function check(){
4 var forumPost = document.getElementById("subject");
5 var forumPostName = forumPost.value;
6 var subjectchkRule = document.getElementById("subjectchk");
7 var postNameRule = document.getElementById("postNameRule");
8
9 postNameRule.style.color="#FF0000";
10 if(forumPostName == ""){
11 subjectchkRule.style.display="none";
12 postNameRule.style.display="none";
13 postNameRule.innerHTML="*原因不能为空";
14 forumPost.focus();
15 }
16 else{
17 postNameRule.innerHTML="";
18 }
19
20 }
21
22 // 只要键盘一抬起就验证编辑框中的文字长度，最大字符长度可以根据需要设定
23 function checkLength(obj) {
24
25 var maxChars = 255;//最多字符数
26 var curr = maxChars - obj.value.length;
27 if( curr > 0 ){
28 document.getElementById("checklen").innerHTML = curr.toString();
29 }else{
30 document.getElementById("checklen").innerHTML = '0';
31 document.getElementById("subject").readOnly=true;
32 }
33 }
34 </script>
