javascript

<script type="text/javascript">
      
     function isDigit()  
           {  
           
            var s =document.zhengWanForm.wktime.value;
            var c = document.zhengWanForm.wdtime.value;
              var patrn=/^[0-9]{1,20}$/;  
              if (!patrn.exec(s)) {
              alert("请输入数字！！！");
              document.zhengWanForm.wktime.value=60;
             
              } 
              if(!patrn.exec(c)){
               alert("请输入数字！！");
               document.zhengWanForm.wdtime.value=60;
              }            
              
              }  


</script>