永兴集团
/**
* @Date: 2020-09-01 17:32:40
* @LastEditors: zhouqi
* @description: 获取cookie
* @param {type} cookieName:键名
* @return {type} 键值
*/
function getCookie(cookieName) {
var allCookies = document.cookie;
var cookiePos = allCookies.indexOf(cookieName);
//把cookiePos放在值的开始，只要给值加1即可。
cookiePos += cookieName.length + 1;
//这里容易出问题，所以请大家