表单验证类 Validator

 JS浏览器判断      

 var agent=window.navigator.userAgent;
         var isIE6 = agent.indexOf('MSIE 6.0') != -1;
        if(agent.indexOf("Firefox")!=-1){
           //火狐浏览器判断          
           
        }else{//IE浏览器 

       

        }

-----------------将以下保存成html执行---------------------------

 <title>表单验证类 Validator v1.05</title>
<style>
body,td{font:normal 12px Verdana;color:#333333}
input,textarea,select,td{font:normal 12px Verdana;color:#333333;border:1px solid #999999;background:#ffffff}
table{border-collapse:collapse;}
td{padding:3px}
input{height:20;}
textarea{width:80%;height:50px;overflow:auto;}
form{display:inline}
</style>
<table align="center">
  <form name="theForm" id="demo" method="get" onSubmit="return Validator.Validate(this,2)">
  <tr>
   <td>身份证号：</td><td><input name="Card" dataType="IdCard" msg="身份证号错误"></td>
  </tr>
    <tr>
   <td>真实姓名：</td><td><input name="Name" dataType="Chinese" msg="真实姓名只允许中文"></td>
  </tr>
  <tr>
   <td>ID：</td><td><input name="username" dataType="Username" msg="ID名不符合规定"></td>
  </tr>
  <tr>
   <td>英文名：</td><td><input name="Nick" dataType="English" require="false" msg="英文名只允许英文字母"></td>
  </tr>
    <tr>
   <td>主页：</td><td><input name="Homepage" require="false" dataType="Url"   msg="非法的Url"></td>
  </tr>
  <tr>
   <td>密码：</td><td><input name="Password" dataType="SafeString"   msg="密码不符合安全规则" type="password"></td>
  </tr>
  <tr>
   <td>重复：</td><td><input name="Repeat" dataType="Repeat" to="Password" msg="两次输入的密码不一致" type="password"></td>
  </tr>
  <tr>
   <td>信箱：</td><td><input name="Email" dataType="Email" msg="信箱格式不正确"></td>
  </tr>
    <tr>
   <td>信箱：</td><td><input name="Email" dataType="Repeat" to="Email" msg="两次输入的信箱不一致"></td>
  </tr>
  <tr>
   <td>QQ：</td><td><input name="QQ" require="false" dataType="QQ" msg="QQ号码不存在"></td>
  </tr>
    <tr>
   <td>身份证：</td><td><input name="Card" dataType="IdCard" msg="身份证号码不正确"></td>
  </tr>
  <tr>
   <td>年龄：</td><td><input name="Year" dataType="Range" msg="年龄必须在18~28之间" min="18" max="28"></td>
  </tr>
   <tr>
   <td>年龄1：</td><td><input name="Year1" require="false" dataType="Compare" msg="年龄必须在18以上" to="18" operator="GreaterThanEqual"></td>
  </tr>
   <tr>
   <td>电话：</td><td><input name="Phone" require="false" dataType="Phone" msg="电话号码不正确"></td>
  </tr>
   <tr>
   <td>手机：</td><td><input name="Mobile" require="false" dataType="Mobile" msg="手机号码不正确"></td>
  </tr>
     <tr>
   <td>生日：</td><td><input name="Birthday" dataType="Date" format="ymd" msg="生日日期不存在"></td>
  </tr>
   <tr>
   <td>邮政编码：</td><td><input name="Zip" dataType="Custom" regexp="^[1-9]\d{5}$" msg="邮政编码不存在"></td>
  </tr>
  <tr>
   <td>邮政编码：</td><td><input name="Zip1" dataType="Zip" msg="邮政编码不存在"></td>
  </tr>
  <tr>
   <td>操作系统：</td><td><select name="Operation" dataType="Require"  msg="未选择所用操作系统" ><option value="">选择您所用的操作系统</option><option value="Win98">Win98</option><option value="Win2k">Win2k</option><option value="WinXP">WinXP</option></select></td>
  </tr>
  <tr>
   <td>所在省份：</td><td>广东<input name="Province" value="1" type="radio">陕西<input name="Province" value="2" type="radio">浙江<input name="Province" value="3" type="radio">江西<input name="Province" value="4" type="radio" dataType="Group"  msg="必须选定一个省份" ></td>
  </tr>
  <tr>
   <td>爱好：</td><td>运动<input name="Favorite" value="1" type="checkbox">上网<input name="Favorite" value="2" type="checkbox">听音乐<input name="Favorite" value="3" type="checkbox">看书<input name="Favorite" value="4" type="checkbox"" dataType="Group" min="2" max="3"  msg="必须选择2~3种爱好"></td>
  </tr>
   <td>自我介绍：</td><td><textarea name="Description" dataType="Limit" max="10"  msg="自我介绍内容必须在10个字之内">中文是一个字</textarea></td>
  </tr>
     <td>自传：</td><td><textarea name="History" dataType="LimitB" min="3" max="10"  msg="自传内容必须在[3,10]个字节之内">中文是两个字节t</textarea></td>
  </tr>
    <tr>
   <td>相片上传：</td><td><input name="up" dataType="Filter" msg="非法的文件格式" type="file" accept="jpg, gif, png"></td>
  </tr>
  <tr>
   <td colspan="2"><input name="Submit" type="submit" value="确定提交"><input onClick="Validator.Validate(document.getElementById('demo'))" value="检验模式1" type="button"><input onClick="Validator.Validate(document.getElementById('demo'),2)" value="检验模式2" type="button"><input onClick="Validator.Validate(document.getElementById('demo'),3)" value="检验模式3" type="button"></td>
  </tr>
  </form>
</table>
<script>

Validator = {
     Require : /.+/,
     Email : /^\w+([-+.]\w+)*@\w+([-.]\w+)*\.\w+([-.]\w+)*$/,
     Phone : /^((\(\d{2,3}\))|(\d{3}\-))?(\(0\d{2,3}\)|0\d{2,3}-)?[1-9]\d{6,7}(\-\d{1,4})?$/,
     Mobile : /^((\(\d{2,3}\))|(\d{3}\-))?13\d{9}$/,
     Url : /^http:\/\/[A-Za-z0-9]+\.[A-Za-z0-9]+[\/=\?%\-&_~`@[\]\':+!]*([^<>\"\"])*$/,
     IdCard : "this.IsIdCard(value)",
     Currency : /^\d+(\.\d+)?$/,
     Number : /^\d+$/,
     Zip : /^[1-9]\d{5}$/,
     QQ : /^[1-9]\d{4,8}$/,
     Integer : /^[-\+]?\d+$/,
     Double : /^[-\+]?\d+(\.\d+)?$/,
     English : /^[A-Za-z]+$/,
     Chinese :  /^[\u0391-\uFFE5]+$/,
     Username : /^[a-z]\w{3,}$/i,
     UnSafe : /^(([A-Z]*|[a-z]*|\d*|[-_\~!@#\$%\^&\*\.\(\)\[\]\{\}<>\?\\\/\'\"]*)|.{0,5})$|\s/,
     IsSafe : function(str){return !this.UnSafe.test(str);},
     SafeString : "this.IsSafe(value)",
     Filter : "this.DoFilter(value, getAttribute('accept'))",
     Limit : "this.limit(value.length,getAttribute('min'),  getAttribute('max'))",
     LimitB : "this.limit(this.LenB(value), getAttribute('min'), getAttribute('max'))",
     Date : "this.IsDate(value, getAttribute('min'), getAttribute('format'))",
     Repeat : "value == document.getElementsByName(getAttribute('to'))[0].value",
     Range : "getAttribute('min') < (value|0) && (value|0) < getAttribute('max')",
     Compare : "this.compare(value,getAttribute('operator'),getAttribute('to'))",
     Custom : "this.Exec(value, getAttribute('regexp'))",
     Group : "this.MustChecked(getAttribute('name'), getAttribute('min'), getAttribute('max'))",
     ErrorItem : [document.forms[0]],
     ErrorMessage : ["以下原因导致提交失败：\t\t\t\t"],
     Validate : function(theForm, mode){
          var obj = theForm || event.srcElement;
          var count = obj.elements.length;
          this.ErrorMessage.length = 1;
          this.ErrorItem.length = 1;
          this.ErrorItem[0] = obj;
          for(var i=0;i<count;i++){
               with(obj.elements[i]){
                    var _dataType = getAttribute("dataType");
                    if(typeof(_dataType) == "object" || typeof(this[_dataType]) == "undefined")  continue;
                    this.ClearState(obj.elements[i]);
                    if(getAttribute("require") == "false" && value == "") continue;
                    switch(_dataType){
                         case "IdCard" :
                         case "Date" :
                         case "Repeat" :
                         case "Range" :
                         case "Compare" :
                         case "Custom" :
                         case "Group" :
                         case "Limit" :
                         case "LimitB" :
                         case "SafeString" :
                         case "Filter" :
                              if(!eval(this[_dataType]))     {
                                   this.AddError(i, getAttribute("msg"));
                              }
                              break;
                         default :
                              if(!this[_dataType].test(value)){
                                   this.AddError(i, getAttribute("msg"));
                              }
                              break;
                    }
               }
          }
          if(this.ErrorMessage.length > 1){
               mode = mode || 1;
               var errCount = this.ErrorItem.length;
               switch(mode){
               case 2 :
                    for(var i=1;i<errCount;i++)
                         this.ErrorItem[i].style.color = "red";
               case 1 :
                    alert(this.ErrorMessage.join("\n"));
                    this.ErrorItem[1].focus();
                    break;
               case 3 :
                    for(var i=1;i<errCount;i++){
                    try{
                         var span = document.createElement("SPAN");
                         span.id = "__ErrorMessagePanel";
                         span.style.color = "red";
                         this.ErrorItem[i].parentNode.appendChild(span);
                         span.innerHTML = this.ErrorMessage[i].replace(/\d+:/,"*");
                         }
                         catch(e){alert(e.description);}
                    }
                    this.ErrorItem[1].focus();
                    break;
               default :
                    alert(this.ErrorMessage.join("\n"));
                    break;
               }
               return false;
          }
          return true;
     },
     limit : function(len,min, max){
          min = min || 0;
          max = max || Number.MAX_VALUE;
          return min <= len && len <= max;
     },
     LenB : function(str){
          return str.replace(/[^\x00-\xff]/g,"**").length;
     },
     ClearState : function(elem){
          with(elem){
               if(style.color == "red")
                    style.color = "";
               var lastNode = parentNode.childNodes[parentNode.childNodes.length-1];
               if(lastNode.id == "__ErrorMessagePanel")
                    parentNode.removeChild(lastNode);
          }
     },
     AddError : function(index, str){
          this.ErrorItem[this.ErrorItem.length] = this.ErrorItem[0].elements[index];
          this.ErrorMessage[this.ErrorMessage.length] = this.ErrorMessage.length + ":" + str;
     },
     Exec : function(op, reg){
          return new RegExp(reg,"g").test(op);
     },
     compare : function(op1,operator,op2){
          switch (operator) {
               case "NotEqual":
                    return (op1 != op2);
               case "GreaterThan":
                    return (op1 > op2);
               case "GreaterThanEqual":
                    return (op1 >= op2);
               case "LessThan":
                    return (op1 < op2);
               case "LessThanEqual":
                    return (op1 <= op2);
               default:
                    return (op1 == op2);           
          }
     },
     MustChecked : function(name, min, max){
          var groups = document.getElementsByName(name);
          var hasChecked = 0;
          min = min || 1;
          max = max || groups.length;
          for(var i=groups.length-1;i>=0;i--)
               if(groups[i].checked) hasChecked++;
          return min <= hasChecked && hasChecked <= max;
     },
     DoFilter : function(input, filter){
return new RegExp("^.+\.(?=EXT)(EXT)$".replace(/EXT/g, filter.split(/\s*,\s*/).join("|")), "gi").test(input);
     },
     IsIdCard : function(number){
          var date, Ai;
          var verify = "10x98765432";
          var Wi = [7, 9, 10, 5, 8, 4, 2, 1, 6, 3, 7, 9, 10, 5, 8, 4, 2];
          var area = ['','','','','','','','','','','','北京','天津','河北','山西','内蒙古','','','','','','辽宁','吉林','黑龙江','','','','','','','','上海','江苏','浙江','安微','福建','江西','山东','','','','河南','湖北','湖南','广东','广西','海南','','','','重庆','四川','贵州','云南','西藏','','','','','','','陕西','甘肃','青海','宁夏','新疆','','','','','','台湾','','','','','','','','','','香港','澳门','','','','','','','','','国外'];
          var re = number.match(/^(\d{2})\d{4}(((\d{2})(\d{2})(\d{2})(\d{3}))|((\d{4})(\d{2})(\d{2})(\d{3}[x\d])))$/i);
          if(re == null) return false;
          if(re[1] >= area.length || area[re[1]] == "") return false;
          if(re[2].length == 12){
               Ai = number.substr(0, 17);
               date = [re[9], re[10], re[11]].join("-");
          }
          else{
               Ai = number.substr(0, 6) + "19" + number.substr(6);
               date = ["19" + re[4], re[5], re[6]].join("-");
          }
          if(!this.IsDate(date, "ymd")) return false;
          var sum = 0;
          for(var i = 0;i<=16;i++){
               sum += Ai.charAt(i) * Wi[i];
          }
          Ai +=  verify.charAt(sum%11);
          return (number.length ==15 || number.length == 18 && number == Ai);
     },
     IsDate : function(op, formatString){
          formatString = formatString || "ymd";
          var m, year, month, day;
          switch(formatString){
               case "ymd" :
                    m = op.match(new RegExp("^((\\d{4})|(\\d{2}))([-./])(\\d{1,2})\\4(\\d{1,2})$"));
                    if(m == null ) return false;
                    day = m[6];
                    month = m[5]*1;
                    year =  (m[2].length == 4) ? m[2] : GetFullYear(parseInt(m[3], 10));
                    break;
               case "dmy" :
                    m = op.match(new RegExp("^(\\d{1,2})([-./])(\\d{1,2})\\2((\\d{4})|(\\d{2}))$"));
                    if(m == null ) return false;
                    day = m[1];
                    month = m[3]*1;
                    year = (m[5].length == 4) ? m[5] : GetFullYear(parseInt(m[6], 10));
                    break;
               default :
                    break;
          }
          if(!parseInt(month)) return false;
          month = month==0 ?12:month;
          var date = new Date(year, month-1, day);
        return (typeof(date) == "object" && year == date.getFullYear() && month == (date.getMonth()+1) && day == date.getDate());
          function GetFullYear(y){return ((y<30 ? "20" : "19") + y)|0;}
     }
}
</script>