js set cookie
<script type="text/javascript">var cookieName = ‘HelloWorld‘;var cookieValue = ‘HelloWorld‘;var myDate = new Date();myDate.setMonth(myDate.getMonth() + 12);document.cookie = cookieName +"=" + cookieValue + ";expires=" + myDate ??????????????????+ ";domain=.example.com;path=/";</script>
domain 可以设置所有域名包含有.example.com的网站
path 设置为 / 时，设置的cookie不区分路径
js ?cookie
原文地址：https://www.cnblogs.com/ryanzheng/p/9217136.html