test-repo/docs/.vitepress/theme/components/appendix/web-basics/DomManipulator.vue

<!--
  DomManipulator.vue
  DOM 速体验：输入标题+切换高亮类，直观看到文本和样式变化。
-->
<template>
  <div class="dom-demo">
    <div class="controls">
      <div class="field">
        <label>改个标题</label>
        <input v-model="title" placeholder="输入新标题" />
      </div>
      <div class="field checkbox">
        <label
          ><input type="checkbox" v-model="highlight" /> 高亮模式
          (class="highlight")</label
        >
      </div>
    </div>

    <div class="card" :class="{ highlight }">
      <h2 id="hero">{{ title }}</h2>
      <p id="desc">这里是段落说明，勾选高亮看看变化。</p>
      <button @click="toggleText">{{ buttonText }}</button>
    </div>

    <pre class="code"><code>// JS 改内容
const titleEl = document.getElementById('hero')
titleEl.textContent = '{{ title }}'

// JS 切 class
const card = document.querySelector('.card')
card.classList.toggle('highlight', {{ highlight }})</code></pre>
  </div>
</template>

<script setup>
import { ref } from 'vue'

const title = ref('欢迎来到我的网站')
const highlight = ref(false)
const buttonText = ref('点我试试')

const toggleText = () => {
  buttonText.value = buttonText.value === '点我试试' ? '再点一次' : '点我试试'
}
</script>

<style scoped>
.dom-demo {
  border: 1px solid var(--vp-c-divider);
  border-radius: 12px;
  background: var(--vp-c-bg-soft);
  padding: 16px;
  margin: 20px 0;
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.controls {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 10px;
}
.field {
  background: var(--vp-c-bg);
  border: 1px solid var(--vp-c-divider);
  border-radius: 10px;
  padding: 10px;
  display: flex;
  flex-direction: column;
  gap: 6px;
}
.checkbox {
  flex-direction: row;
  align-items: center;
  gap: 8px;
}
input[type='text'],
input[type='checkbox'] {
  accent-color: var(--vp-c-brand);
}

.card {
  border: 1px solid var(--vp-c-divider);
  border-radius: 12px;
  padding: 16px;
  background: var(--vp-c-bg);
  transition: all 0.2s;
}
.card.highlight {
  border-color: #f59e0b;
  box-shadow: 0 8px 18px rgba(245, 158, 11, 0.2);
  background: #fff7ed;
}
.card h2 {
  margin: 0 0 8px 0;
}
.card p {
  margin: 0 0 12px 0;
  color: var(--vp-c-text-2);
}
.card button {
  background: var(--vp-c-brand);
  color: #fff;
  border: none;
  border-radius: 8px;
  padding: 8px 12px;
  cursor: pointer;
}

.code {
  background: #0b1221;
  color: #e5e7eb;
  border-radius: 10px;
  padding: 12px;
  font-family: var(--vp-font-family-mono);
  font-size: 13px;
  overflow-x: auto;
}
</style>