爱在西元前

<script language="JavaScript">
<!--
function checkdata(){//检查函数
  //检查是否数字
    var txt = document.forms[0].num.value;
    if(txt.search("^-?\\d+(\\.\\d+)?$")!=0){
        alert("请输入一个数字!");
        document.forms[0].num.select();
        return false;
    }
    //检查是否整数
    txt = document.forms[0].int.value;
    if(txt.search("^-?\\d+$")!=0){
        alert("请输入一个整数!");
        document.forms[0].int.select();
        return false;
    }
    //检查EMAIL是否合法
    txt = document.forms[0].email.value;
    if(txt.search("^(?:\\w+\\.?)*\\w+@(?:\\w+\\.?)*\\w+$")!=0){
        alert("请输入正确的电子邮件!");
        document.forms[0].email.select();
        return false;
    }
    alert("检查通过!");
    return true;
}
-->
</script>

<script language="JavaScript">
            <!-- //对付老式浏览器所用注释
           
   function testisNum(s){
    var s =document.getElementById('num').value;
    if(isNum(s))
    {
     alert("是数字");
    }
    else
    {
     alert("请出入数字");
    }
   }
   
   
            //校验用户姓名：只能输入3-20个以字母和数字开头的字串
            function isTrueName(s)
            {
             var pattern=/^\w{3,20}$/;
             if(pattern.exec(s))
             {
              return true;
             }
             return false;
            }
            //校验普通电话、传真号码：可以“+”开头，除数字外，可含有“-”
            function isTel(s)
            {
             var pattern =/^[+]{0,1}(\d){1,3}[ ]?([-]?((\d)|[ ]){1,12})+$/;
             if(pattern.exec(s))
             {
              return true;
             }
             return false;
            }
            //校验手机号码：必须以数字开头，除数字外，可含有“-”
            function isMobile(s)
            {
             //var patrn=/^[+]{0,1}(\d){1,3}[ ]?([-]?((\d)|[ ]){1,12})+$/;
             var patrn=/^((\(\d{0,3}\))|(\d{0,3}\-))?13|15\d{9}$/;
             if (!patrn.exec(s)){
               return false;
               }
              return true;
            }
            //校验(国内)邮政编码
            function isPostalCode(s)
            {
             var patrn=/^[0-9]{6}$/;
             //var patrn=/^[a-zA-Z0-9 ]{3,12}$/;
              if (!patrn.exec(s)){
               return false;
               }
              return true;
            }
           
            function isIP(s) //by zergling
            {
             var patrn=/^[0-9.]{1,20}$/;
              if (!patrn.exec(s)) {
               return false;
               }
              return true;
            }
            //校验邮箱
            function isEmail(s)
            {
             var patrn=/^[a-zA-Z0-9_\-]{1,}@[a-zA-Z0-9_\-]{1,}\.[a-zA-Z0-9_\-.]{1,}$/;
              if (!patrn.exec(s)) {
               return false;
               }
              return true;
            }
            //校验日期
            function isdate(s)
            {
             var patrn=/^((\d{2}(([02468][048])|([13579][26]))[\-\/\s]?((((0?[13578])|(1[02]))[\-\/\s]?((0?[1-9])|([1-2][0-9])|(3[01])))|(((0?[469])|(11))[\-\/\s]?((0?[1-9])|([1-2][0-9])|(30)))|(0?2[\-\/\s]?((0?[1-9])|([1-2][0-9])))))|(\d{2}(([02468][1235679])|([13579][01345789]))[\-\/\s]?((((0?[13578])|(1[02]))[\-\/\s]?((0?[1-9])|([1-2][0-9])|(3[01])))|(((0?[469])|(11))[\-\/\s]?((0?[1-9])|([1-2][0-9])|(30)))|(0?2[\-\/\s]?((0?[1-9])|(1[0-9])|(2[0-8]))))))(\s(((0?[0-9])|([1-2][0-3]))\:([0-5]?[0-9])((\s)|(\:([0-5]?[0-9])))))?$/;
              if (!patrn.exec(s)){
               return false;
               }
              return true;
            }
            
            //校验货币格式
            function isCurrency(s)
            {
             var patrn=/^\d+(\.\d+)?$/;
              if (!patrn.exec(s)) {
               return false;
               }
              return true;
            }
            //校验搜索关键字
            function isSearch(s)
            {
             var patrn=/^[^`~!@#$%^&*()+=|\\\][\]\{\}:;\'\,.<>?]{1}[^`~!@$%^&()+=|\\\][\]\{\}:;\'\,.<>?]{0,19}$/;
              if (!patrn.exec(s)) {
              return false;
               }
              return true;
            }
            //检查是否数字
            function isNum(s)
            {
             var pattern = /^\d+(\.\d+)?$/;
             if(pattern.test(s))
             {
              return true;
             }
             return false;
            }
             //检查是否整数
            function isInt(s)
            {
             var pattern = /^-?\d+$/;
             if(s.search(pattern)!=0)
             {
              return false;
             }
             return true;
            }
            -->
        </script>