JS 판단은 빈 실례 코드가 될 수 없습니다

 
  
 
  
 
  
     
  
         
  
         
  
        
  <br>        function formcheck(){ 
  <br>            if(document.form.zhanghao.value==""){ 
  <br>                alert("      ！"); 
  <br>                this.form1.zhanghao.focus(); 
  <br>                return false; 
  <br>            }else if(document.form.email.value==""){ 
  <br>                alert("      ！") 
  <br>                this.form1.eamil.focus(); 
  <br>                return false; 
  <br>            }else form1.submit();  
  <br>} 
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</td> 
  <br/>                        </tr> 
  <br/>                        <tr bgcolor="#eeeeee"> 
  <br/>                            <td align="center">     :</td> 
  <br/>                            <td><textarea name="content" cols="80" rows="15" id="email" class="formh"/></td> 
  <br/>                        </tr> 
  <br/> 
  <br/>                        <tr bgcolor="#eeeeee" align="center"> 
  <br/>                <td height="25" colspan="2"> 
  <br/>                    <input type="button" name="Submit" value="   " class="button" onclick="javascript：formcheck();"/>       
  <br/>                    <input type="reset" name="Submit2" value="   " class="button"/> 
  <br/>                </td> 
  <br/>                        </tr> 
  <br/>                 
  <br/>            </table> 
  <br/>        </form> 
  <br/>     
  <br/> 
  <br/> 
 </code></pre> 
 <div class="clearfix"> 
  <span id="art_bot" class="jbTestPos"/> 
 </div> 
</div>
                            </div>
                        </div>