[流程控制变量](%E6%B5%81%E7%A8%8B%E6%8E%A7%E5%88%B6.md) [对话类变量](%E5%AF%B9%E8%AF%9D%E7%B1%BB%E5%8F%98%E9%87%8F.md) [网络访问变量](%E7%BD%91%E7%BB%9C%E8%AE%BF%E9%97%AE%E5%8F%98%E9%87%8F.md) [数据库操作变量](%E6%95%B0%E6%8D%AE%E5%BA%93%E6%93%8D%E4%BD%9C%E5%8F%98%E9%87%8F.md) [文本操作变量](%E6%96%87%E6%9C%AC%E6%93%8D%E4%BD%9C%E5%8F%98%E9%87%8F.md) [官方的特殊变量](%E5%AE%98%E6%96%B9%E7%9A%84%E7%89%B9%E6%AE%8A%E5%8F%98%E9%87%8F.md) [try catch](trycatch.md)