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README.md

练习 5：Promise 基础

目标

学会用 Promise 表达异步结果。

你要练什么

  • Promise
  • .then()
  • .catch()

任务

  • 调用模拟请求函数
  • 成功时渲染课程数据
  • 失败时渲染错误状态

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