강력한 폼 검증

 <title>      Validator v1.01</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;overfmin:auto;}
 form{display:inline}
 </style>
 <table align="center">
  <form name="theForm" id="demo" action="" method="get" onSubmit="return Validator.Validate(this,2)">
    <tr>
   <td>    ：</td><td><input name="Name" dataType="Chinese" msg="         "></td>
  </tr>
  <tr>
   <td>   ：</td><td><input name="Nick" dataType="English" require="false" msg="          "></td>
  </tr>
    <tr>
   <td>  ：</td><td><input name="Homepage" require="false" dataType="Url"   msg="   Url"></td>
  </tr>
  <tr>
   <td>  ：</td><td><input name="Password" dataType="SafeString"   msg="         " type="password"></td>
  </tr>
  <tr>
   <td>  ：</td><td><input name="Repeat" dataType="Repeat" to="Password" msg="          " type="password"></td>
  </tr>
  <tr>
   <td>  ：</td><td><input name="Email" dataType="Email" msg="       "></td>
  </tr>
    <tr>
   <td>  ：</td><td><input name="Email" dataType="Repeat" to="Email" msg="          "></td>
  </tr>
  <tr>
   <td>QQ：</td><td><input name="QQ" require="false" dataType="QQ" msg="QQ     "></td>
  </tr>
    <tr>
   <td>   ：</td><td><input name="Card" dataType="IdCard" msg="        "></td>
  </tr>
  <tr>
   <td>  ：</td><td><input name="Year" dataType="Range" msg="     18~28  " min="18" max="28"></td>
  </tr>
   <tr>
   <td>  1：</td><td><input name="Year1" require="false" dataType="Compare" msg="     18  " to="18" operator="GreaterThanEqual"></td>
  </tr>
   <tr>
   <td>  ：</td><td><input name="Phone" require="false" dataType="Phone" msg="       "></td>
  </tr>
   <tr>
   <td>  ：</td><td><input name="Mobile" require="false" dataType="Mobile" msg="       "></td>
  </tr>
     <tr>
   <td>  ：</td><td><input name="Birthday" dataType="Date" format="ymd" msg="       "></td>
  </tr>
   <tr>
   <td>    ：</td><td><input name="Zip" dataType="Custom" regexp="^[1-9]\d{5}$" msg="       "></td>
  </tr>
  <tr>
   <td>    ：</td><td><input name="Zip1" dataType="Zip" msg="       "></td>
  </tr>
  <tr>
   <td>    ：</td><td><select name="Operation" dataType="Require"  msg="         " ><option value="">          </option><option value="Win98">Win98</option><option value="Win2k">Win2k</option><option value="WinXP">WinXP</option></select></td>
  </tr>
  <tr>
   <td>    ：</td><td>  <input name="Province" value="1" type="radio">  <input name="Province" value="2" type="radio">  <input name="Province" value="3" type="radio">  <input name="Province" value="4" type="radio" dataType="Group"  msg="        " ></td>
  </tr>
  <tr>
   <td>  ：</td><td>  <input name="Favorite" value="1" type="checkbox">  <input name="Favorite" value="2" type="checkbox">   <input name="Favorite" value="3" type="checkbox">  <input name="Favorite" value="4" type="checkbox"" dataType="Group" min="2" max="3"  msg="    2~3   "></td>
  </tr>
   <td>    ：</td><td><textarea name="Description" dataType="Limit" max="10"  msg="         10    ">      </textarea></td>
  </tr>
     <td>  ：</td><td><textarea name="History" dataType="LimitB" min="3" max="10"  msg="       [3,10]     ">       t</textarea></td>
  </tr>
  <tr>
   <td colspan="2"><input name="Submit" type="submit" value="    "><input onClick="Validator.Validate(document.getElementById('demo'))" value="    1" type="button"><input onClick="Validator.Validate(document.getElementById('demo'),2)" value="    2" type="button"><input onClick="Validator.Validate(document.getElementById('demo'),3)" value="    3" type="button"></td>
  </tr>
  </form>
 </table>
 <script>
 /*************************************************
	Validator v1.01
	code by     
	[email protected]
	http://www.cunite.com
*************************************************/
 Validator = {
	Require : /.+/,
	Email : /^\w+([-+.]\w+)*@\w+([-.]\w+)*\.\w+([-.]\w+)*$/,
	Phone : /^((\(\d{3}\))|(\d{3}\-))?(\(0\d{2,3}\)|0\d{2,3}-)?[1-9]\d{6,7}$/,
	Mobile : /^((\(\d{3}\))|(\d{3}\-))?13\d{9}$/,
	Url : /^http:\/\/[A-Za-z0-9]+\.[A-Za-z0-9]+[\/=\?%\-&_~`@[\]\':+!]*([^<>\"\"])*$/,
	IdCard : /^\d{15}(\d{2}[A-Za-z0-9])?$/,
	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]+$/,
	Chinese :  /^[\u0391-\uFFE5]+$/,
	UnSafe : /^(([A-Z]*|[a-z]*|\d*|[-_\~!@#\$%\^&\*\.\(\)\[\]\{\}<>\?\\\/\'\"]*)|.{0,5})$|\s/,
	IsSafe : function(str){return !this.UnSafe.test(str);},
	SafeString : "this.IsSafe(value)",
	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 && value < 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 : ["          ：\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 "Date" :
					case "Repeat" :
					case "Range" :
					case "Compare" :
					case "Custom" :
					case "Group" : 
					case "Limit" :
					case "LimitB" :
					case "SafeString" :
						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("
"));
				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("
"));
				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;
	},
	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]--;
				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]--;
				year = (m[5].length == 4) ? m[5] : GetFullYear(parseInt(m[6], 10));
				break;
			default :
				break;
		}
		if(!parseInt(month)) return false;
		month = month==12 ?0:month;
		var date = new Date(year, month, day);
        return (typeof(date) == "object" && year == date.getFullYear() && month == date.getMonth() && day == date.getDate());
		function GetFullYear(y){return ((y<30 ? "20" : "19") + y)|0;}
	}
 }
</script>