const loadButton = document.getElementById("load-btn"); const status1 = document.getElementById("status"); const output = document.getElementById("output"); // 任务: // 1. 点击按钮后把状态改成“加载中...” // 2. 用 fetch 请求 https://jsonplaceholder.typicode.com/posts/1 // 3. 用 await 等待响应对象 // 4. 调用 res.json() 解析数据 // 5. 把 title 和 body 渲染到页面 // 6. 失败时显示“加载失败” loadButton.addEventListener("click", async () => { status1.textContent = "加载中..." try { let a = await fetch("https://jsonplaceholder.typicode.com/posts/1") let data = await a.json() status1.textContent = "加载成功" const { title, body } = data output.textContent = `title:${title} body:${body}` } catch (error) { status1.textContent = "加载失败" } })