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README.md

练习 9：async / await 面板

目标

学会用 async / await 写一个更直观的异步流程。

你要练什么

  • async
  • await
  • try...catch
  • DOM 更新

任务

  • 点击按钮后进入加载状态
  • 等待异步函数返回用户信息
  • 把结果渲染到卡片里
  • 如果失败，显示错误信息

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