[一、昨日回顾](%E4%B8%80%E3%80%81%E6%98%A8%E6%97%A5%E5%9B%9E%E9%A1%BE11.md) [二、今日目标](%E4%BA%8C%E3%80%81%E4%BB%8A%E6%97%A5%E7%9B%AE%E6%A0%8711.md) [三、完成省市县三级联动](%E4%B8%89%E3%80%81%E5%AE%8C%E6%88%90%E7%9C%81%E5%B8%82%E5%8E%BF%E4%B8%89%E7%BA%A7%E8%81%94%E5%8A%A8.md) [四、优化省市县三级联动](%E5%9B%9B%E3%80%81%E4%BC%98%E5%8C%96%E7%9C%81%E5%B8%82%E5%8E%BF%E4%B8%89%E7%BA%A7%E8%81%94%E5%8A%A8.md) [五、服务器返回XML格式的数据](%E4%BA%94%E3%80%81%E6%9C%8D%E5%8A%A1%E5%99%A8%E8%BF%94%E5%9B%9EXML%E6%A0%BC%E5%BC%8F%E7%9A%84%E6%95%B0%E6%8D%AE.md) [六、FormData对象](%E5%85%AD%E3%80%81FormData%E5%AF%B9%E8%B1%A1.md) [七、跨域请求](%E4%B8%83%E3%80%81%E8%B7%A8%E5%9F%9F%E8%AF%B7%E6%B1%82.md) [八、实现跨域请求](%E5%85%AB%E3%80%81%E5%AE%9E%E7%8E%B0%E8%B7%A8%E5%9F%9F%E8%AF%B7%E6%B1%82.md)