我有一段php的代码，麻烦能帮我写一下注释吗，尤其是html部分，感觉看不懂呀

<script> <br /> function CheckForm() <br /> { <br /> if (document.login.user_no.value.length == 0) { <br /> alert("请输入用户名称!"); <br /> document.login.user_no.focus(); <br /> return false; <br /> } <br /> if (document.login.user_pass.value == "") { <br /> alert("请输入密码!"); <br /> document.login.user_pass.focus(); <br /> return false; <br /> } <br /> return true; <br /> } <br /> </script>





  
    
  

      
        
      
    

          
            
          
          
            
          
          
            
          
        

              
                
                
                
              
            

                  
                    
                      
                      
                      
                    
                    
                      
                      
                      
                    
 
                      
                      
                      
                    

                    
                      
                      
                      
                  

	用户:
	密码:
	用户类型	系统管理员                                                 员工

                        

                

            

copyright©  

回复讨论(解决方案)

从基础学起吧，这些都是最基本的代码。

就是一个静态页面，格式控制没有什么好注释的