export function getCookie(name: string) {
  const reg = new RegExp('(^| )' + name + '=([^;]*)(;|$)')
  const arr = document.cookie.match(reg)
  if (arr) {
    return unescape(arr[2])
  } else {
    return null
  }
}

export function setCookie (name: string, value: string) {
  const Days = 3000
  const exp: any = new Date()
  exp.setTime(exp.getTime() + Days * 24 * 60 * 60 * 1000)
  document.cookie = name + '=' + escape(value) + ';expires=' + exp.toGMTString() + ';path=/'
}

export function deleteCookie (name: string) {
  const exp: any = new Date()
  exp.setTime(exp.getTime() - 1)
  const cval = getCookie(name)
  if (cval != null) {
    document.cookie = `${name}=${cval};expires=${exp.toGMTString()}`
  }
}