JavaScript 设置cookie，获取cookie，删除cookie

设置cookie

  function setCookie(name, value,day=1) {
        //day 默认一天
        var exp = new Date();
        exp.setTime(exp.getTime() + 1000 * 60 * 60 * 24 *day);
        document.cookie = name + "=" + escape(value) + ";expires=" + exp.toGMTString();
    }

 getCookie: (name)  => {
  var arr;
  var reg  =  new  RegExp("(^| )"  + name  +  "=([^;]*)(;|$)");
  if (arr  = document.cookie.match(reg))
  return  unescape(arr[2]);
  else
  return  null;
    },

 removeCookie: (name)  => {
  var exp  =  new  Date();
        exp.setTime(exp.getTime()  -  1);
  var cval  =  Vue.prototype.$Utils.getCookie(name);
  if (cval  !=  null)
            document.cookie  = name  +  "="  + cval  +  ";expires="  + exp.toGMTString();
    },

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