var date = new Date(); date.setTime(date.getTime() + (x * 60 * 1000)); $.cookie('example', 'foo', { expires: date }); 

<script type="text/javascript">var expiresDate= new Date();expiresDate.setTime(expire.getTime() + (? * 60 * 1000)); //?替換成分鐘數如果為60分鐘則為 60 * 60 *1000$.cookie("__cookie__", 'helloworld', {      path : '/',      //cookie的作用域      expires : expiresDate    });}</script>

function SetCookie(name,value){ var str=name+"="+escape(value); var dd = new Date();  dd.setDate(dd.getDate()+1);//獲取明天  var y = dd.getYear();  var m = dd.getMonth()+1;//獲取當前月份的日期 var d = dd.getDate();  date = new Date(y+'-'+m+'-'+d+' 00:00:00'); date.setTime(date.getTime());//明天的0:00:00 str+=";expires="+date.toGMTString(); document.cookie = str; }