[2.1、小程序](2.1%E3%80%81%E5%B0%8F%E7%A8%8B%E5%BA%8F.md) [2.2、微信公众号](2.2%E3%80%81%E5%BE%AE%E4%BF%A1%E5%85%AC%E4%BC%97.md) [2.3、百度小程序](2.3%E3%80%81%E7%99%BE%E5%BA%A6%E5%B0%8F%E7%A8%8B%E5%BA%8F.md)