JS验证

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<HTML>
 <HEAD>
  <TITLE> New Document </TITLE>
  <META NAME="Generator" CONTENT="EditPlus">
  <META NAME="Author" CONTENT="">
  <META NAME="Keywords" CONTENT="">
  <META NAME="Description" CONTENT="">
  <Script>
 var RegType=
 {
  EMail:/^([\w-\.]+)@((\[[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.)|(([\w-]+\.)+))([a-zA-Z]{2,4}|[0-9]{1,3})(\]?)$/,
  QQ:/^[0-9]{5,9}$/,
 }

 function IsOk(value, regExpress)
 {
  var v=value;
  var reg=regExpress;
  if(RegType[reg] == null)
  {
   return false;
  }
  return (v.match(RegType[reg]) == null)? false:true;
 }

 function CheckForm()
 {
  var formID='form1';
  var objCol=document.getElementById(formID);
  for(var i=0;i<objCol.elements.length;i++)
  {
   var vt = objCol[i].getAttribute("vt");
   if(!vt)
   {
    continue;
   }
   if(!IsOk(objCol[i].value, vt))
   {
    document.getElementById(objCol[i].msgID).innerHTML = "必须是" + vt;
   }
   else
   {
    document.getElementById(objCol[i].msgID).innerHTML = "";
   }
  }
 }
  </Script>
 </HEAD>
 <BODY>
 <form id=form1>
  <input id=txtEMail msgID=msg1 vt='EMail'/>
  <span id=msg1></span>
  <input id=txtQQ msgID=msg2 vt=QQ>
  <span id=msg2></span>
  <input type=button onclick="return CheckForm()" value=提交>
 </form>
 </BODY>
</HTML>

原文地址:https://www.cnblogs.com/xjyggd/p/1387366.html