# Session-Cookie
// 利用Cookie防止在1分钟内多次提交：
function SetCookie (name, value)
{
var Days = 30;
var exp = new Date();
exp.setTime (exp.getTime() + 60*100); // 过期时间设置为1分钟
} function submit ()
{
if (getCookie('submit'))
{
alert('you haved submited befor, please submit after one minute!');
}
else
{
setCookie('submit', 'yes');
}
} function getCookie (name)
{
var arr.reg = new RegExp("(^|") + name + "=([^;]*(;|$));
if (arr = document.cookie.match(reg))
{
return unescape(arr[2]);
}
else
{
return null;
}
} <button>Submit!</button>