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test-repo/docs/.vitepress/theme/components/appendix/web-basics/FrontendEvolutionDemo.vue
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668 lines
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Vue

<template>
<div class="frontend-evolution-demo">
<!-- Modern Timeline -->
<div class="timeline-container">
<div class="timeline-track"></div>
<button
v-for="(stage, index) in stages"
:key="index"
class="timeline-node"
:class="{ active: currentStage === index, passed: currentStage > index }"
@click="currentStage = index"
>
<div class="node-dot">
<div class="inner-dot"></div>
</div>
<div class="node-content">
<span class="year-badge">{{ stage.year }}</span>
<span class="node-label">{{ stage.label }}</span>
</div>
</button>
</div>
<div class="content-wrapper">
<transition name="fade-slide" mode="out-in">
<div :key="currentStage" class="stage-content">
<div class="header-section">
<h3>
<span class="stage-index">{{ indexToRoman(currentStage + 1) }}.</span>
{{ stages[currentStage].title }}
</h3>
<p>{{ stages[currentStage].desc }}</p>
</div>
<div class="visualization-grid">
<!-- Code Editor -->
<div class="mac-window code-window">
<div class="window-bar">
<div class="traffic-lights">
<span class="light red"></span>
<span class="light yellow"></span>
<span class="light green"></span>
</div>
<div class="window-title">{{ stages[currentStage].codeTitle }}</div>
</div>
<div class="editor-content">
<pre><code>{{ stages[currentStage].code }}</code></pre>
</div>
</div>
<!-- Diagram View -->
<div class="mac-window diagram-window">
<div class="window-bar">
<div class="window-title">Architecture Pattern</div>
</div>
<div class="diagram-canvas">
<!-- Stage 0: Static -->
<div v-if="currentStage === 0" class="diagram static">
<div class="flow-stack">
<div class="concept-box html">
<span class="icon">📄</span> HTML (Content)
</div>
<div class="flow-arrow"></div>
<div class="concept-box browser">
<span class="icon">🌍</span> Browser (Display)
</div>
</div>
<div class="side-note">Server sends complete HTML</div>
</div>
<!-- Stage 1: jQuery -->
<div v-if="currentStage === 1" class="diagram jquery">
<div class="concept-box dom">
<span class="icon">🌳</span> DOM Tree
</div>
<div class="chaos-arrows">
<svg viewBox="0 0 100 60" class="chaos-svg">
<path d="M10,10 Q50,5 90,10" class="arrow-path" marker-end="url(#arrowhead)"/>
<path d="M90,50 Q50,55 10,50" class="arrow-path" marker-end="url(#arrowhead)"/>
<path d="M20,20 Q50,40 80,20" class="arrow-path dashed" marker-end="url(#arrowhead)"/>
</svg>
<span class="label-action">Direct Manipulation</span>
<span class="label-event">Events</span>
</div>
<div class="concept-box js">
<span class="icon">🍝</span> jQuery / JS
</div>
<!-- SVG Marker Definition -->
<svg style="position: absolute; width: 0; height: 0;">
<defs>
<marker id="arrowhead" markerWidth="10" markerHeight="7" refX="9" refY="3.5" orient="auto">
<polygon points="0 0, 10 3.5, 0 7" fill="#666" />
</marker>
</defs>
</svg>
</div>
<!-- Stage 2: MVC -->
<div v-if="currentStage === 2" class="diagram mvc">
<div class="mvc-triangle">
<div class="concept-box model">Model</div>
<div class="concept-box view">View</div>
<div class="concept-box controller">Controller</div>
<!-- Connecting Lines -->
<div class="line m-v"></div>
<div class="line v-c"></div>
<div class="line c-m"></div>
</div>
<div class="mvc-desc">Two-way Binding</div>
</div>
<!-- Stage 3: Component -->
<div v-if="currentStage === 3" class="diagram component">
<div class="comp-structure">
<div class="comp-box root">
<span class="comp-label">App</span>
<div class="comp-children">
<div class="comp-box header">Header</div>
<div class="comp-box list">
ProductList
<div class="comp-children row">
<div class="comp-box item">Item</div>
<div class="comp-box item">Item</div>
</div>
</div>
</div>
</div>
</div>
<div class="flow-pill">
State UI = f(State)
</div>
</div>
</div>
</div>
</div>
</div>
</transition>
</div>
</div>
</template>
<script setup>
import { ref } from 'vue'
const currentStage = ref(0)
const indexToRoman = (num) => {
const map = { 1: 'I', 2: 'II', 3: 'III', 4: 'IV' }
return map[num] || num
}
const stages = [
{
year: '1990s',
label: 'Static Web',
title: 'The Static Era',
desc: 'Web pages were just digital documents. The server sent HTML, and the browser rendered it. Want new content? Refresh the whole page.',
codeTitle: 'index.html',
code: `<html>
<body>
<h1>Hello World</h1>
<p>Static content served by server.</p>
</body>
</html>`
},
{
year: '2005+',
label: 'jQuery Era',
title: 'Imperative DOM',
desc: 'JS directly manipulated the DOM. "Find that button, add a click listener, change that div\'s color". Logic became tangled like "spaghetti".',
codeTitle: 'script.js',
code: `$('#btn').click(function() {
// Find & Modify directly
$('.box').show();
$('.text').text('Loading...');
// Callback hell...
$.ajax('/api', function(data) {
$('.content').html(data);
});
});`
},
{
year: '2010+',
label: 'MVC/MVVM',
title: 'Framework Era',
desc: 'Separation of concerns. Data (Model) and View were separated. Two-way data binding (like in AngularJS) was magic but performance-heavy.',
codeTitle: 'controller.js',
code: `$scope.user = { name: 'Bob' };
// Magic: Data changes -> View updates
$scope.updateName = function() {
$scope.user.name = 'Alice';
};`
},
{
year: '2013+',
label: 'Component',
title: 'Component Era',
desc: 'UI is broken into independent "Lego blocks" (Components). Declarative: You define "What it looks like given State X", framework handles the "How".',
codeTitle: 'ProductCard.vue',
code: `<template>
<div class="card">
<h3>{{ product.name }}</h3>
<button @click="buy">Buy</button>
</div>
</template>
<script>
// State driven
export default {
props: ['product'],
methods: { buy() { ... } }
}
<\/script>`
}
]
</script>
<style scoped>
.frontend-evolution-demo {
border-radius: 16px;
background: var(--vp-c-bg);
box-shadow: 0 8px 30px rgba(0,0,0,0.05);
border: 1px solid var(--vp-c-divider);
overflow: hidden;
margin: 2rem 0;
font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}
/* --- Timeline --- */
.timeline-container {
padding: 2rem 1rem 1rem;
background: linear-gradient(to bottom, var(--vp-c-bg-soft), var(--vp-c-bg));
display: flex;
justify-content: space-between;
position: relative;
border-bottom: 1px solid var(--vp-c-divider);
}
.timeline-track {
position: absolute;
top: 2.5rem; /* Center with dots */
left: 3rem;
right: 3rem;
height: 2px;
background: var(--vp-c-divider);
z-index: 0;
}
.timeline-node {
position: relative;
z-index: 1;
background: transparent;
border: none;
display: flex;
flex-direction: column;
align-items: center;
cursor: pointer;
padding: 0;
width: 25%;
transition: all 0.3s ease;
opacity: 0.6;
}
.timeline-node:hover {
opacity: 0.9;
}
.timeline-node.active, .timeline-node.passed {
opacity: 1;
}
.node-dot {
width: 16px;
height: 16px;
border-radius: 50%;
background: var(--vp-c-bg);
border: 2px solid var(--vp-c-text-3);
margin-bottom: 0.8rem;
display: flex;
align-items: center;
justify-content: center;
transition: all 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}
.inner-dot {
width: 0;
height: 0;
border-radius: 50%;
background: var(--vp-c-brand);
transition: all 0.3s;
}
.timeline-node.active .node-dot {
border-color: var(--vp-c-brand);
transform: scale(1.3);
box-shadow: 0 0 0 4px var(--vp-c-bg-soft);
}
.timeline-node.active .inner-dot {
width: 8px;
height: 8px;
}
.timeline-node.passed .node-dot {
border-color: var(--vp-c-brand);
background: var(--vp-c-brand);
}
.node-content {
text-align: center;
display: flex;
flex-direction: column;
align-items: center;
gap: 0.2rem;
}
.year-badge {
font-size: 0.75rem;
font-family: var(--vp-font-family-mono);
background: var(--vp-c-bg-alt);
padding: 2px 6px;
border-radius: 4px;
color: var(--vp-c-text-2);
}
.node-label {
font-size: 0.9rem;
font-weight: 600;
color: var(--vp-c-text-1);
}
/* --- Content --- */
.content-wrapper {
padding: 2rem;
min-height: 400px;
}
.header-section {
text-align: center;
margin-bottom: 2rem;
max-width: 600px;
margin-left: auto;
margin-right: auto;
}
.header-section h3 {
font-size: 1.5rem;
margin-bottom: 0.5rem;
background: linear-gradient(120deg, var(--vp-c-brand), #8b5cf6);
-webkit-background-clip: text;
-webkit-text-fill-color: transparent;
}
.stage-index {
color: var(--vp-c-text-3);
-webkit-text-fill-color: var(--vp-c-text-3);
margin-right: 0.5rem;
font-weight: normal;
}
.header-section p {
font-size: 1rem;
color: var(--vp-c-text-2);
line-height: 1.6;
}
/* --- Visualization Grid --- */
.visualization-grid {
display: grid;
grid-template-columns: 1fr 1fr;
gap: 2rem;
align-items: stretch;
}
@media (max-width: 768px) {
.visualization-grid {
grid-template-columns: 1fr;
}
}
.mac-window {
border-radius: 12px;
border: 1px solid rgba(0,0,0,0.1);
box-shadow: 0 10px 30px rgba(0,0,0,0.1);
overflow: hidden;
display: flex;
flex-direction: column;
background: white;
transition: transform 0.3s ease;
}
.mac-window:hover {
transform: translateY(-5px);
}
.code-window {
background: #1e1e2e; /* Dark theme */
}
.diagram-window {
background: var(--vp-c-bg-alt);
}
.window-bar {
padding: 0.8rem 1rem;
background: rgba(255,255,255,0.05); /* Transparent on dark */
border-bottom: 1px solid rgba(255,255,255,0.1);
display: flex;
align-items: center;
position: relative;
}
.diagram-window .window-bar {
background: white;
border-bottom: 1px solid rgba(0,0,0,0.05);
}
.traffic-lights {
display: flex;
gap: 6px;
}
.light {
width: 10px;
height: 10px;
border-radius: 50%;
}
.light.red { background: #ff5f56; }
.light.yellow { background: #ffbd2e; }
.light.green { background: #27c93f; }
.window-title {
position: absolute;
left: 0;
right: 0;
text-align: center;
font-size: 0.8rem;
color: #9ca3af;
font-family: var(--vp-font-family-mono);
}
.diagram-window .window-title {
color: var(--vp-c-text-2);
font-weight: 600;
}
.editor-content {
padding: 1rem;
overflow: auto;
flex: 1;
}
.editor-content pre {
margin: 0;
background: transparent;
padding: 0;
}
.editor-content code {
font-family: 'Fira Code', 'Menlo', monospace;
font-size: 0.85rem;
line-height: 1.5;
color: #a6accd;
}
.diagram-canvas {
padding: 2rem;
flex: 1;
display: flex;
align-items: center;
justify-content: center;
min-height: 250px;
position: relative;
}
/* --- Diagram Specifics --- */
.concept-box {
background: white;
border: 1px solid rgba(0,0,0,0.1);
padding: 0.8rem 1.2rem;
border-radius: 8px;
box-shadow: 0 4px 6px rgba(0,0,0,0.05);
font-weight: 600;
font-size: 0.9rem;
display: flex;
align-items: center;
gap: 0.5rem;
z-index: 2;
}
.icon { font-size: 1.2rem; }
/* Static Diagram */
.diagram.static .flow-stack {
display: flex;
flex-direction: column;
align-items: center;
gap: 1rem;
}
.side-note {
margin-top: 1rem;
font-size: 0.8rem;
color: var(--vp-c-text-3);
background: rgba(0,0,0,0.05);
padding: 4px 8px;
border-radius: 4px;
}
/* jQuery Diagram */
.diagram.jquery {
flex-direction: column;
gap: 1rem;
width: 100%;
}
.chaos-arrows {
position: relative;
height: 80px;
width: 100%;
display: flex;
align-items: center;
justify-content: center;
}
.chaos-svg {
position: absolute;
top: 0;
left: 0;
width: 100%;
height: 100%;
overflow: visible;
}
.arrow-path {
fill: none;
stroke: #9ca3af;
stroke-width: 2;
}
.arrow-path.dashed {
stroke-dasharray: 4;
}
.label-action, .label-event {
font-size: 0.75rem;
background: white;
padding: 2px 4px;
border-radius: 4px;
z-index: 1;
box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}
.label-action { transform: translate(-20px, -10px); }
.label-event { transform: translate(20px, 10px); }
/* MVC Diagram */
.diagram.mvc {
flex-direction: column;
gap: 1rem;
}
.mvc-triangle {
position: relative;
width: 200px;
height: 160px;
}
.mvc-triangle .model { position: absolute; top: 0; left: 50%; transform: translateX(-50%); }
.mvc-triangle .view { position: absolute; bottom: 0; left: 0; }
.mvc-triangle .controller { position: absolute; bottom: 0; right: 0; }
.line {
position: absolute;
background: #cbd5e1;
z-index: 1;
}
.line.m-v {
height: 2px;
width: 110px;
top: 45%;
left: 20px;
transform: rotate(60deg);
}
.line.v-c {
height: 2px;
width: 100px;
bottom: 20px;
left: 50px;
}
.line.c-m {
height: 2px;
width: 110px;
top: 45%;
right: 20px;
transform: rotate(-60deg);
}
.mvc-desc {
margin-top: 1rem;
font-size: 0.85rem;
font-weight: bold;
color: var(--vp-c-brand);
}
/* Component Diagram */
.diagram.component {
flex-direction: column;
gap: 1.5rem;
}
.comp-structure {
display: flex;
justify-content: center;
}
.comp-box {
background: white;
border: 2px solid #3b82f6;
border-radius: 6px;
padding: 6px;
font-size: 0.8rem;
text-align: center;
box-shadow: 0 4px 0 rgba(59, 130, 246, 0.2);
}
.comp-box.root {
background: #eff6ff;
display: flex;
flex-direction: column;
gap: 8px;
padding: 10px;
}
.comp-label {
font-weight: bold;
color: #1e40af;
}
.comp-children {
display: flex;
gap: 8px;
justify-content: center;
}
.comp-children.row {
margin-top: 4px;
}
.comp-box.header { background: #dbeafe; border-style: dashed; }
.comp-box.list { background: #dbeafe; }
.comp-box.item { background: #bfdbfe; font-size: 0.7rem; padding: 4px; }
.flow-pill {
background: linear-gradient(90deg, #3b82f6, #8b5cf6);
color: white;
padding: 0.5rem 1.5rem;
border-radius: 20px;
font-weight: bold;
font-size: 0.9rem;
box-shadow: 0 4px 10px rgba(59, 130, 246, 0.3);
}
/* Transitions */
.fade-slide-enter-active,
.fade-slide-leave-active {
transition: all 0.4s ease;
}
.fade-slide-enter-from {
opacity: 0;
transform: translateY(20px);
}
.fade-slide-leave-to {
opacity: 0;
transform: translateY(-20px);
}
</style>