<script src="js/layui.js" type="text/javascript" charset="utf-8"></script> 
<script type="text/javascript"> 
         var onebtns=document.getElementById("onebtn"); 
         var twobtns=document.getElementById("twobtn"); 
         var soutside1ab=document.getElementById("outside1abs"); 
         var soutside2as=document.getElementById("outside2as"); 
        var oneforms=document.getElementById("oneform"); 
        var twoforms=document.getElementById("twoform"); 
        var threeforms=document.getElementById("threeform"); 
         function fun(){ 
         var    pasvals=document.getElementById("pasval").value; 
            isPasswd(pasvals); 
             function isPasswd(s) {  
                var patrn=/^(\w){6,20}$/;  
                if (!patrn.exec(s)) 
                { 
                    alert("只能输入6-20个字母、数字、下划线" ) 
                 return false 
                }else{ 
                     soutside1ab.classList.remove("outside1ab"); 
                     oneforms.style.display="none"; 
                     twoforms.style.display="block"; 
                } 
                }             
         } 
        function fun1(){ 
                var str=document.getElementById("ntel").value; 
                 isPoneAvailable(str); 
                 function isPoneAvailable(str) {   
                  var myreg=/^[1][0-9]{10}$/;   
                  if (!myreg.test(str)) {   
                      alert("请输入正确的手机号") 
                      return false; 
                  } else {  
          threeforms.style.display="block"; 
          twoforms.style.display="none"; 
          soutside2as.classList.remove("outside2a"); 
          }   
      }  
             
             
         } 
</script>