feat: Add Vue3 exercises and interview plan

- Introduced Vue3 exercises covering composable API, reactivity, lifecycle hooks, and built-in components. - Added structured interview plan for frontend candidates focusing on HTML, CSS, JavaScript, TypeScript, and Vue. - Included starter files for each exercise and detailed README documentation for guidance.
2026-03-24 23:02:58 +08:00
parent 3435848495
commit d0d8be443b
41 changed files with 1551 additions and 5 deletions
--- a/08-vue3/11-before-hooks-and-expose/README.md
+++ b/08-vue3/11-before-hooks-and-expose/README.md
@@ -0,0 +1,24 @@
+# 练习 11：before 系列生命周期和 expose
+
+## 目标
+
+学会在组合式 API 中使用 before 系列生命周期，并理解子组件如何有选择地暴露能力给父组件。
+
+## 你要练什么
+
+- `onBeforeMount`
+- `onBeforeUpdate`
+- `onBeforeUnmount`
+- `expose`
+
+## 任务
+
+- 在不同生命周期里输出日志
+- 父组件通过模板 `ref` 获取子组件实例
+- 子组件通过 `expose` 暴露一个 `focusInput` 方法
+- 父组件点击按钮后调用这个暴露出来的方法
+
+## 文件
+
+- [starter.html](/Users/lijiaqing/home/wwwroot/front-end-example/08-vue3/11-before-hooks-and-expose/starter.html)
+- [starter.js](/Users/lijiaqing/home/wwwroot/front-end-example/08-vue3/11-before-hooks-and-expose/starter.js)
--- a/08-vue3/11-before-hooks-and-expose/starter.html
+++ b/08-vue3/11-before-hooks-and-expose/starter.html
@@ -0,0 +1,25 @@
+<!DOCTYPE html>
+<html lang="zh-CN">
+  <head>
+    <meta charset="UTF-8" />
+    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
+    <title>before 系列生命周期和 expose</title>
+    <style>
+      body { margin: 0; padding: 32px; font-family: "PingFang SC", sans-serif; background: #f6f8fc; }
+      .panel { max-width: 760px; margin: 0 auto; padding: 24px; border-radius: 18px; background: #fff; border: 1px solid #dde5f2; }
+      button, input { padding: 12px 14px; border-radius: 12px; font: inherit; }
+      input { width: 100%; border: 1px solid #ccd7e9; margin-top: 12px; }
+      button { border: 0; background: #2d6cdf; color: #fff; cursor: pointer; margin-right: 10px; }
+    </style>
+  </head>
+  <body>
+    <section id="app" class="panel">
+      <button type="button" @click="focusChildInput">聚焦子组件输入框</button>
+      <button type="button" @click="showChild = !showChild">切换子组件显示</button>
+      <child-panel v-if="showChild" ref="childPanel"></child-panel>
+    </section>
+
+    <script src="https://cdn.jsdelivr.net/npm/vue@3/dist/vue.global.js"></script>
+    <script src="./starter.js"></script>
+  </body>
+</html>
--- a/08-vue3/11-before-hooks-and-expose/starter.js
+++ b/08-vue3/11-before-hooks-and-expose/starter.js
@@ -0,0 +1,59 @@
+const {
+  createApp,
+  ref,
+  onBeforeMount,
+  onBeforeUpdate,
+  onBeforeUnmount,
+} = Vue;
+
+createApp({
+  components: {
+    ChildPanel: {
+      template: `
+        <div>
+          <p>我是子组件</p>
+          <input ref="inputEl" type="text" placeholder="等待父组件调用 focus" />
+        </div>
+      `,
+      setup(props, { expose }) {
+        const inputEl = ref(null);
+
+        onBeforeMount(() => {
+          // 任务：输出 beforeMount 日志
+        });
+
+        onBeforeUpdate(() => {
+          // 任务：输出 beforeUpdate 日志
+        });
+
+        onBeforeUnmount(() => {
+          // 任务：输出 beforeUnmount 日志
+        });
+
+        function focusInput() {
+          // 任务：聚焦 inputEl
+        }
+
+        // 任务：通过 expose 暴露 focusInput
+
+        return {
+          inputEl,
+        };
+      },
+    },
+  },
+  setup() {
+    const showChild = ref(true);
+    const childPanel = ref(null);
+
+    function focusChildInput() {
+      // 任务：调用 childPanel.value 暴露出来的方法
+    }
+
+    return {
+      showChild,
+      childPanel,
+      focusChildInput,
+    };
+  },
+}).mount("#app");