可能重复：
date of birth validation for a drink website
How do I verify age using jQuery?
我写了一些$东西来验证学校网站的年龄。
不在本地工作，所以我无法测试它，我还需要用 cookies 实现“记住我”。
提交应链接到下一页。你能帮帮我吗？
这里是代码
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
</head>
<script type="text/javascript" src="http://ajax.googleapis.com/ajax/libs/jquery/1.4.2/jquery.min.js"></script>
<script src="https://raw.github.com/carhartl/jquery-cookie/master/jquery.cookie.js"></script>
<script type="text/javascript">
var container = $("#container");
var avContainer = $("#av-container");
var mcf = new mcFramework(container, avContainer);
mcf.mcSetCallbackFunction(function() { document.cookie = "site=" + document.domain.replace(/\./, "") + "av; path=/"; if (window.location.href != 'google.com/') { window.location.href = 'google.com/'; } positionTab(); } );
function mcFramework(ContentContainer, AVContainer) {
//global vars
var _AVContent = 'You need to be of legal drinking age to continue.';
var _AVFailContent = 'You must be of legal drinking age (21 or older) to enter our site. You are being redirected to http://www.thecoolspot.gov/ - a place for teens to find info on alcohol and resisting peer pressure.';
var _ContentContainer = ContentContainer;
var _AVContainer = AVContainer;
var _CallbackFunction = "";
var _SiteCode = "";
// Set the tracking tag function which will fire on AV or AV Fail
this.mcSetCallbackFunction = function(val) { _CallbackFunction = val };
this.mcSetSiteCode = function(val) { _SiteCode = val };
//add AV form to page
avhtml = '<div id="Form">'
+ '<div id="mc_avcontent">' + _AVContent + '</div>'
+ '<div id="mc_averrors"></div>'
+ '<p class="inputs">'
+ '<input type="text" id="mc_avday" name="mc_avday" value="DD" maxLength="2" tabindex="1" autocomplete="off" />'
+ '<input type="text" id="mc_avmonth" name="mc_avmonth" value="MM" maxLength="2" tabindex="2" autocomplete="off" />'
+ '<input type="text" id="mc_avyear" name="mc_avyear" value="YYYY" maxLength="4" tabindex="3" autocomplete="off" />'
+ '</p>'
+ '<p class="jqtransform remember">'
+ '<label for="RememberMe">Remember Me'
+ '<input name="RememberMe" id="RememberMe" type="checkbox" class="jqtransform">'
+ '</label>'
+ '</p>'
+ '<div id="submit" style="cursor:pointer;"></div>'
+ '</div>';
_AVContainer.append(avhtml);
initForm();
function _AgeVerify(monthU, dayU, yearU) {
var min_age = 21;
/* change "age_form" to whatever your form has for a name="..." */
var year = parseInt(yearU);
var month = parseInt(monthU) - 1;
var day = parseInt(dayU);
var theirDate = new Date((year + min_age), month, day);
var today = new Date;
if ( (today.getTime() - theirDate.getTime()) < 0) {
_ShowAVFail();
}
else {
_SetAVCookie();
_ShowContent();
}
}
function _ShowAVFail(callback)
{
avfailhtml = '<div id="mc_avfail">' + _AVFailContent + '</div>';
$("#mc_avform").html(avfailhtml);
setTimeout('document.location.href="http://www.thecoolspot.gov"', 5000);
if (_AVFailTag) {
_AVFailTag();
}
}
function _ShowContent()
{
_AVContainer.hide();
_ContentContainer.show();
_SetAVCookie();
if (_CallbackFunction) {
_CallbackFunction();
}
}
function initForm()
{
// Add form event listners
$("#submit").click(_AVFormSubmit);
$("#mc_avform").keyup(_AVFormAutoTab);
$("#mc_avday").keydown(clearField);
$("#mc_avmonth").keydown(clearField);
$("#mc_avyear").keydown(clearField);
// Set focus on month field
$("#mc_avmonth").focus();
$("#mc_avmonth").select();
}
function clearField() {
if ($(this).val() == "MM" || $(this).val() == "DD" || $(this).val() == "YYYY") {
$(this).val("");
}
}
// Handle auto tabbing
function _AVFormAutoTab(e)
{
var srcElem = (window.event) ? e.srcElement : e.target;
var day = $("#mc_avday").val();
var month = $("#mc_avmonth").val();
var year = $("#mc_avyear").val();
if (e.keyCode == 13) {
_AVFormSubmit();
} else {
switch (srcElem.id) {
case "mc_avday":
if (day.match(/^[0-9]{2}$/)) {
$("#mc_avyear").focus();
$("#mc_avyear").select();
}
break;
case "mc_avmonth":
if (month.match(/^[0-9]{2}$/)) {
$("#mc_avday").focus();
$("#mc_avday").select();
}
break;
// case "mc_avyear":
// if (year.match(/^[0-9]{4}$/)) {
// $("#mc_avzip").focus();
// $("#mc_avzip").select();
// }
default:
result = 'unknown';
}
}
}
// Submit AV form
function _AVFormSubmit()
{
if (_AVFormValidate()) {
var day = $("#mc_avday").val();
var month = $("#mc_avmonth").val();
var year = $("#mc_avyear").val();
_AgeVerify(month, day, year);
}
}
// ======================
// = AV Form Validation =
// ======================
// Validate the AV form
function _AVFormValidate() {
var day = $("#mc_avday");
var month = $("#mc_avmonth");
var year = $("#mc_avyear");
error_day = 'Please enter a valid day.';
error_month = 'Please enter a valid month.';
error_year = 'Please enter a valid year.';
error_date = 'Please enter a valid date.';
var av_errors = $('#mc_averrors');
if (!(_isNumeric(day.val()))) {
av_errors.text(error_day);
day.focus();
return false;
}
if (!(_isNumeric(month.val()))) {
av_errors.text(error_month);
month.focus();
return false;
}
if (!(_isNumeric(year.val()))) {
av_errors.text(error_year);
year.focus();
return false;
}
if (year.val().length < 4) {
av_errors.text(error_year);
year.focus();
return false;
}
if (!_checkdate(month.val(), day.val(), year.val())) {
av_errors.text(error_date);
return false;
}
av_errors.text("");
if (zipe == true)
{
return true;
}
else
{
return false;
}
}
// Check if a string is numeric
function _isNumeric(str) {
return /^\d+$/.test(str);
}
// Check if a string is a valid date
function _checkdate(m, d, y) {
var now = new Date(); // current date from clients system
var yc = now.getYear(); // get current year
if (yc < 2000) yc = yc + 1900; // in case the year is < 2000
var yl = yc - 120; // least year to consider
var ym = yc; // most year to consider
if (m < 1 || m > 12) return (false);
if (d < 1 || d > 31) return (false);
if (y < yl || y > ym) return (false);
if (m == 4 || m == 6 || m == 9 || m == 11)
if (d == 31) return (false);
if (m == 2) {
var b = parseInt(y / 4);
if (isNaN(b)) return (false);
if (d > 29) return (false);
if (d == 29 && ((y / 4) != parseInt(y / 4))) return (false);
}
return (true);
}
}
//Date helpers
function checkleapyear(datea) {
if (datea.getYear() % 4 == 0) {
if (datea.getYear() % 10 != 0) {
return true;
}
else {
if (datea.getYear() % 400 == 0)
return true;
else
return false;
}
}
return false;
}
function DaysInMonth(Y, M) {
with (new Date(Y, M, 1, 12)) {
setDate(0);
return getDate();
}
}
function datediff(date1, date2) {
var y1 = date1.getFullYear(), m1 = date1.getMonth(), d1 = date1.getDate(),
y2 = date2.getFullYear(), m2 = date2.getMonth(), d2 = date2.getDate();
if (d1 < d2) {
m1--;
d1 += DaysInMonth(y2, m2);
}
if (m1 < m2) {
y1--;
m1 += 12;
}
return [y1 - y2, m1 - m2, d1 - d2];
}
function set_cookie(name, value, exp_d, path, domain, secure) {
var cookie_string = name + "=" + escape(value);
if (exp_d) {
var exp = new Date(); //set new date object
exp.setTime(exp.getTime() + (1000 * 60 * 60 * 24 * exp_d));
}
if (path)
cookie_string += "; path=" + escape(path);
if (domain)
cookie_string += "; domain=" + escape(domain);
if (secure)
cookie_string += "; secure";
document.cookie = cookie_string;
}
function SetBypassCookie(site) {
var siteName = site + 'av';
//var zip = $("#mc_avzip").val();
set_cookie("site", siteName, 30, "/");
//set_cookie("zip", zip, 30, "/");
}
</script>
<body>
<div class="content" id="av-container">
</div>
</body>
</html>