sanbuphy
73f4788d7e
- Update READMEs and docs across multiple languages - Enhance interactive demos for Agent, LLM, VLM, Audio, Image Gen, Terminal, and Web Basics - Add new appendix sections for Database and IDE intros - Update VitePress config, theme, and utility scripts - Clean up unused assets and components
333 lines
10 KiB
Vue
333 lines
10 KiB
Vue
<!--
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WebTechTriad.vue
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三剑客轻交互：同一段小页面，切换 HTML/CSS/JS。
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目标：让读者“看到页面上的某一块”就能立刻找到“代码里的哪一行”，再用三步解释发生了什么。
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风格：先玩后讲，句子短。
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-->
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<template>
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<div class="triad">
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<div class="top">
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<div>
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<div class="title">先玩一下：同一段页面，切换层次</div>
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<div class="subtitle">HTML 定骨架 → CSS 换外观 → JS 让它动起来</div>
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</div>
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<div class="modes">
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<button
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v-for="m in modes"
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:key="m.id"
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:class="['mode', { active: current === m.id }]"
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@click="current = m.id"
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>
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{{ m.label }}
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</button>
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</div>
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</div>
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<div class="preview" :class="current">
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<div class="hint">点一下标题/段落/按钮，我会在下面的代码里高亮对应行。</div>
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<h1
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class="hero"
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:class="{ selected: selectedPart === 'h1' }"
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@click="selectedPart = 'h1'"
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>
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<span class="badge">①</span>
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欢迎来到我的网站
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</h1>
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<p
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class="desc"
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:class="{ selected: selectedPart === 'p' }"
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@click="selectedPart = 'p'"
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>
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<span class="badge">②</span>
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这是一段描述文字，告诉用户这里能做什么。
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</p>
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<button
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class="cta"
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:class="{ selected: selectedPart === 'btn' }"
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@click="selectedPart = 'btn'; increment()"
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>
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<span class="badge">③</span>
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点我试试看 ({{ clicks }})
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</button>
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<div class="click-tip" v-if="current === 'js'">
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现在再点一次按钮计数会变：这是 JS 在改页面。
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</div>
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</div>
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<div class="code-block">
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<div class="code-title">{{ codeTitle }}</div>
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<div class="code-content">
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<div
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v-for="(line, i) in codeLines"
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:key="i"
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:class="['line', { hl: line.key === selectedPart }]"
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>
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{{ line.text }}
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</div>
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</div>
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</div>
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<div class="explain">
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<div class="card">
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<div class="card-title">对照：页面 ↔ 代码</div>
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<div class="map">
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<button
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v-for="row in mappingRows"
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:key="row.key"
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:class="['map-row', { active: selectedPart === row.key }]"
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@click="selectedPart = row.key"
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>
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<span class="left">{{ row.left }}</span>
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<span class="right">{{ row.right }}</span>
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</button>
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</div>
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</div>
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<div class="card">
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<div class="card-title">发生了什么（简单版）</div>
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<ol class="steps">
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<li v-for="s in steps" :key="s">{{ s }}</li>
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</ol>
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</div>
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</div>
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<div class="one-line">
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<span class="one-line-title">一句话总结：</span>
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<span class="one-line-body">{{ oneLine }}</span>
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</div>
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</div>
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</template>
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<script setup>
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import { computed, ref } from 'vue'
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const modes = [
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{ id: 'html', label: '看骨架 (HTML)' },
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{ id: 'css', label: '看外观 (CSS)' },
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{ id: 'js', label: '看交互 (JS)' }
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]
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const current = ref('html')
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const clicks = ref(0)
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const selectedPart = ref('h1') // 'h1' | 'p' | 'btn'
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const codeTitle = computed(() => {
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if (current.value === 'html') return 'HTML 片段：告诉浏览器这是什么'
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if (current.value === 'css') return 'CSS 片段：决定长什么样'
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return 'JS 片段：让它动起来'
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})
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const codeLines = computed(() => {
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if (current.value === 'html') {
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return [
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{ key: 'h1', text: '<h1>欢迎来到我的网站</h1>' },
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{ key: 'p', text: '<p>这是一段描述文字...</p>' },
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{ key: 'btn', text: '<button>点我试试看</button>' }
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]
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}
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if (current.value === 'css') {
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return [
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{ key: 'h1', text: '.hero { color: #0ea5e9; font-size: 24px; }' },
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{ key: 'p', text: '.desc { color: #111827; }' },
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{ key: 'btn', text: '.cta { background: #0ea5e9; color: #fff; border-radius: 10px; }' }
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]
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}
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return [
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{ key: 'btn', text: "const btn = document.querySelector('button')" },
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{ key: 'btn', text: 'let count = 0' },
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{ key: 'btn', text: "btn.addEventListener('click', () => {" },
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{ key: 'btn', text: ' count++' },
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{ key: 'btn', text: " btn.textContent = '点我试试看 (' + count + ')'" },
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{ key: 'btn', text: '})' }
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]
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})
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const mappingRows = computed(() => {
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if (current.value === 'html') {
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return [
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{ key: 'h1', left: '① 标题', right: '<h1>...</h1>' },
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{ key: 'p', left: '② 段落', right: '<p>...</p>' },
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{ key: 'btn', left: '③ 按钮', right: '<button>...</button>' }
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]
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}
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if (current.value === 'css') {
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return [
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{ key: 'h1', left: '① 标题', right: '.hero { ... }' },
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{ key: 'p', left: '② 段落', right: '.desc { ... }' },
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{ key: 'btn', left: '③ 按钮', right: '.cta { ... }' }
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]
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}
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return [
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{ key: 'h1', left: '① 标题', right: '（此例未涉及）' },
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{ key: 'p', left: '② 段落', right: '（此例未涉及）' },
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{ key: 'btn', left: '③ 按钮', right: "addEventListener('click', ...)" }
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]
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})
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const steps = computed(() => {
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if (current.value === 'html') {
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return [
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'浏览器读到 HTML：知道页面上有“标题/段落/按钮”。',
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'把它们先按默认规则摆出来（所以看起来很朴素）。',
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'下一步才轮到 CSS 和 JS。'
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]
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}
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if (current.value === 'css') {
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return [
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'浏览器先把 HTML 结构摆好。',
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'再读取 CSS：给标题/段落/按钮套上颜色、字号、间距。',
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'重新绘制外观：你看到页面“变好看”。'
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]
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}
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return [
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'页面先按 HTML+CSS 显示出来。',
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'JS 给按钮装上“点击开关”（事件监听）。',
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'你点击按钮时：JS 改按钮文字/计数，页面立即更新。'
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]
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})
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const oneLine = computed(() => {
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if (current.value === 'html') return '先把“有哪些东西、是什么东西”说清楚。'
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if (current.value === 'css') return '在不改结构的前提下，把外观调到你想要的样子。'
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return '把“点击/输入”等行为接上逻辑，让页面能互动。'
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})
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// Keep the demo behavior: only JS mode should increment on click.
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// We implement it by watching mode and only allowing clicks to increment in JS mode.
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const increment = () => {
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if (current.value !== 'js') return
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clicks.value++
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}
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</script>
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<style scoped>
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.triad {
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border: 1px solid var(--vp-c-divider);
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border-radius: 12px;
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background: var(--vp-c-bg-soft);
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padding: 16px;
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margin: 20px 0;
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display: flex;
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flex-direction: column;
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gap: 12px;
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}
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.top { display: flex; justify-content: space-between; align-items: center; gap: 12px; flex-wrap: wrap; }
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.title { font-weight: 800; font-size: 16px; }
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.subtitle { color: var(--vp-c-text-2); font-size: 13px; margin-top: 4px; }
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.modes { display: flex; gap: 8px; flex-wrap: wrap; }
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.mode {
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border: 1px solid var(--vp-c-divider);
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background: var(--vp-c-bg);
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padding: 6px 12px;
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border-radius: 6px;
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cursor: pointer;
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font-size: 13px;
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transition: all 0.2s;
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}
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.mode:hover { background: var(--vp-c-bg-soft); }
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.mode.active {
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border-color: var(--vp-c-brand);
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color: var(--vp-c-brand);
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background: var(--vp-c-brand-dimm);
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}
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.preview {
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border: 1px solid var(--vp-c-divider);
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border-radius: 12px;
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padding: 24px;
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background: var(--vp-c-bg);
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display: flex;
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flex-direction: column;
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gap: 16px;
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transition: all 0.2s;
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}
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.hint { color: var(--vp-c-text-2); font-size: 13px; margin-bottom: 8px; }
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.badge {
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display: inline-flex;
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align-items: center;
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justify-content: center;
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width: 20px;
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height: 20px;
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border-radius: 6px;
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background: var(--vp-c-bg-soft);
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border: 1px solid var(--vp-c-divider);
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margin-right: 12px;
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font-weight: 800;
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font-size: 12px;
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flex-shrink: 0;
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}
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.hero { margin: 0; cursor: pointer; display: flex; align-items: center; line-height: 1.4; }
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.desc { margin: 0; color: var(--vp-c-text-2); cursor: pointer; display: flex; align-items: center; line-height: 1.5; }
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.cta {
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width: fit-content;
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border: 1px solid var(--vp-c-divider);
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border-radius: 8px;
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padding: 8px 16px;
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cursor: pointer;
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background: var(--vp-c-bg);
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display: flex;
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align-items: center;
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font-size: 14px;
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transition: all 0.2s;
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}
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.selected {
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outline: 2px solid var(--vp-c-brand);
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outline-offset: 4px;
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border-radius: 4px;
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}
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.click-tip { margin-top: 6px; color: var(--vp-c-text-2); font-size: 13px; }
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.preview.css .hero { color: #0ea5e9; }
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.preview.css .desc { color: var(--vp-c-text-1); }
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.preview.css .cta { background: #0ea5e9; color: #fff; border-color: #0ea5e9; box-shadow: 0 4px 12px rgba(14,165,233,0.25); }
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.preview.js .cta { background: #22c55e; color: #fff; border-color: #22c55e; box-shadow: 0 4px 12px rgba(34,197,94,0.25); }
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.preview.js { border-color: rgba(34, 197, 94, 0.4); }
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.code-block { background: var(--vp-c-bg-alt); border: 1px solid var(--vp-c-divider); border-radius: 10px; padding: 16px; }
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.code-title { font-weight: 700; margin-bottom: 8px; font-size: 13px; color: var(--vp-c-text-2); }
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pre { margin: 0; background: #0b1221; color: #e5e7eb; border-radius: 8px; padding: 16px; font-family: var(--vp-font-family-mono); font-size: 13px; overflow-x: auto; line-height: 1.6; }
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.line { min-height: 1.6em; }
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.hl { background: rgba(34, 197, 94, 0.2); border-radius: 4px; display: block; width: 100%; }
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.explain { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 10px; }
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.card { background: var(--vp-c-bg); border: 1px dashed var(--vp-c-divider); border-radius: 10px; padding: 10px; }
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.card-title { font-weight: 700; margin-bottom: 4px; }
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.card-body { color: var(--vp-c-text-2); font-size: 13px; line-height: 1.5; }
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.map { display: flex; flex-direction: column; gap: 8px; margin-top: 8px; }
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.map-row {
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display: flex;
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justify-content: space-between;
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gap: 10px;
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padding: 10px;
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border-radius: 10px;
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border: 1px solid var(--vp-c-divider);
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background: var(--vp-c-bg);
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cursor: pointer;
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text-align: left;
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}
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.map-row.active {
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border-color: var(--vp-c-brand);
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box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
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}
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.left { font-weight: 800; }
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.right { color: var(--vp-c-text-2); }
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.steps { margin: 8px 0 0 18px; color: var(--vp-c-text-2); line-height: 1.6; }
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.one-line {
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background: var(--vp-c-bg);
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border: 1px solid var(--vp-c-divider);
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border-radius: 10px;
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padding: 10px 12px;
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font-size: 14px;
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}
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.one-line-title { font-weight: 800; }
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.one-line-body { color: var(--vp-c-text-2); }
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</style>
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