网页未读邮件windows弹窗提醒

// 获取按钮元素，不同界面直接替换该XPATH即可letbutton=document.evaluate('/html/body/section/article/section/div[2]/div/section/article/div[2]/div[1]/div/div[2]/div/div[4]/span[2]', document, null, XPathResult.FIRST_ORDERED_NODE_TYPE, null).singleNodeValue;
// 设置定时器，每隔一定时间点击按钮lettimer=setInterval(() => {
button.click();
varnow=newDate();
vartime=now.getHours() +':'+now.getMinutes() +':'+now.getSeconds();
console.log(time+'邮件均为已读');
// 如果有邮件数字，则弹窗if (document.getElementById("mltree_3_span").children[0].innerText!=="") {
// alert("您存在未读邮件，请注意");if (Notification.permission==="granted") {
varnotification=newNotification("通知标题", { body: "您存在未读邮件，请注意" });
        } elseif (Notification.permission!=="denied") {
Notification.requestPermission().then(function(permission) {
if (permission==="granted") {varnotification=newNotification("通知标题", { body: "您存在未读邮件，请注意" });
    }
                });
        }
  }
// 刷新时间，此为30s}, 30000);