js校验－textarea文本框的校验

js校验－textarea文本框的校验

 1  function checkac(){
 2                  with (document.forms[ 0 ]){                
 3                      document.getElementById( ' ac ' ).innerHTML = trim(document.getElementById( ' ac ' ).innerHTML);
 4                       if ((document.getElementById( ' ac ' ).innerHTML).length > 255 ){
 5                          alert( " 警告：[审核意见]的长度应小于255个字节！ " );
 6                          ac.focus();
 7                           return   false ;
 8                      }
 9                       return   true ;
10                  }
11              }

1  < tr >
2                               < td  class = " td1 "  align = " center " >
3                                  审核意见
4                               </ td >
5                               < td nowrap colspan = " 5 " >
6                                   < html:textarea name = " moduleInfoForm "  property = " maModbaseinfo.ac "  styleId = " ac "  cols = " 90 "   />
7                               </ td >
8                           </ tr >

查看原代码如下：

1  < tr >
2                               < td  class = " td1 "  align = " center " >
3                                  审核意见
4                               </ td >
5                           < td nowrap colspan = " 5 " >
6                         < textarea name = " maModbaseinfo.ac "  cols = " 90 "  id = " ac " > 001 </ textarea >
7           </ td >
8  </ tr >