// const Qrcode = this.$refs?.Qrcode
// const exportLink = Qrcode.$el.currentSrc // base64码
const iconUrl = this.$refs['Qrcode'].$el.src
const a = document.createElement('a')
const event = new MouseEvent('click')
a.download = 'MyInviteCode'
a.href = iconUrl
a.dispatchEvent(event)