451 lines
16 KiB
HTML
451 lines
16 KiB
HTML
<!doctype html>
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<html lang="zh">
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<head>
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<meta charset="UTF-8" />
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<meta
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name="viewport"
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content="width=device-width, initial-scale=1.0, maximum-scale=1.5, user-scalable=yes"
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/>
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<title>轻量 · 代码差异对比器</title>
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<!-- Highlight.js 主题 (GitHub 风格) -->
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<link
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rel="stylesheet"
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href="https://cdnjs.cloudflare.com/ajax/libs/highlight.js/11.9.0/styles/github.min.css"
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/>
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<!-- Diff2Html 核心样式 -->
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<link
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rel="stylesheet"
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href="https://cdn.jsdelivr.net/npm/diff2html@3.4.47/bundles/css/diff2html.min.css"
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/>
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<!-- 引入 Tailwind CSS -->
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<script src="https://cdn.tailwindcss.com"></script>
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<!-- 配置 Tailwind 字体 -->
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<script>
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tailwind.config = {
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theme: {
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extend: {
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fontFamily: {
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sans: ['"Segoe UI"', "system-ui", "-apple-system", "sans-serif"],
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mono: ['"JetBrains Mono"', '"Fira Code"', "monospace"],
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},
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},
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},
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};
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</script>
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<!-- 针对动态生成的 DOM 和 JS 强关联类的少量自定义样式 -->
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<style type="text/tailwindcss">
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@layer components {
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/* 视图切换按钮的激活状态 (配合 JS) */
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.view-option.active {
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@apply bg-white text-blue-700 shadow-sm font-semibold;
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}
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/* JS 动态插入的空状态提示 */
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.empty-message {
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@apply p-10 text-center text-slate-500 bg-slate-50/50;
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}
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}
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/* 优化 diff2html 内部样式 (Tailwind 无法直接控制第三方库的内部 DOM) */
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.d2h-wrapper {
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font-size: 14px;
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}
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.d2h-file-header {
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display: none !important; /* 隐藏文件名条，更清爽 */
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}
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.d2h-code-line-ctn {
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@apply font-mono !important;
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}
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/* 覆盖 diff2html 默认的难看边框 */
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.d2h-file-wrapper {
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border: none !important;
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margin-bottom: 0 !important;
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}
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</style>
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</head>
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<body
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class="bg-slate-100 font-sans p-4 md:p-6 min-h-screen flex flex-col items-center text-slate-800"
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>
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<div
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class="max-w-[1600px] w-full bg-white rounded-[28px] shadow-xl shadow-slate-200/50 p-6 md:p-8 transition-all"
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>
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<!-- 标题区 -->
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<h1
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class="font-semibold text-2xl md:text-3xl text-slate-900 flex items-center gap-3 mt-1 mb-6 border-b-2 border-slate-100 pb-5"
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>
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⚖️ Diff Checker
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<span
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class="bg-gradient-to-br from-blue-600 to-blue-800 text-white text-sm font-medium px-3 py-1 rounded-full ml-2 shadow-sm"
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>
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代码高亮 · 即时对比
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</span>
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</h1>
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<!-- 双栏输入区 -->
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<div class="flex flex-col lg:flex-row gap-5 mb-6">
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<!-- 左侧面板 -->
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<div
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class="flex-1 flex flex-col bg-slate-50 rounded-2xl border border-slate-200 overflow-hidden shadow-sm"
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>
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<div
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class="flex items-center justify-between px-4 py-3 bg-slate-100/50 border-b border-slate-200"
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>
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<label class="font-semibold text-slate-700 flex items-center gap-2">
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📄 原始文本
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<span
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class="bg-slate-200 text-slate-600 text-xs px-2.5 py-0.5 rounded-full font-medium"
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>A</span
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>
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</label>
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<button
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id="clearLeftBtn"
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title="清空左侧"
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class="px-3 py-1 text-sm font-medium text-blue-600 bg-blue-50 border border-blue-200 rounded-full hover:bg-blue-100 transition-colors"
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>
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清空
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</button>
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</div>
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<textarea
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id="leftTextarea"
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class="w-full flex-1 min-h-[260px] h-[300px] p-4 font-mono text-sm leading-relaxed bg-white border-none outline-none resize-y text-slate-800 placeholder:text-slate-400 placeholder:italic"
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placeholder="粘贴或输入原始代码 / 文本…"
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>
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function hello() {
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console.log("Hello World");
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return "Hi";
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}</textarea
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>
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</div>
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<!-- 右侧面板 -->
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<div
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class="flex-1 flex flex-col bg-slate-50 rounded-2xl border border-slate-200 overflow-hidden shadow-sm"
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>
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<div
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class="flex items-center justify-between px-4 py-3 bg-slate-100/50 border-b border-slate-200"
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>
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<label class="font-semibold text-slate-700 flex items-center gap-2">
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📝 修改文本
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<span
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class="bg-slate-200 text-slate-600 text-xs px-2.5 py-0.5 rounded-full font-medium"
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>B</span
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>
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</label>
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<button
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id="clearRightBtn"
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title="清空右侧"
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class="px-3 py-1 text-sm font-medium text-blue-600 bg-blue-50 border border-blue-200 rounded-full hover:bg-blue-100 transition-colors"
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>
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清空
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</button>
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</div>
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<textarea
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id="rightTextarea"
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class="w-full flex-1 min-h-[260px] h-[300px] p-4 font-mono text-sm leading-relaxed bg-white border-none outline-none resize-y text-slate-800 placeholder:text-slate-400 placeholder:italic"
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placeholder="粘贴或输入修改后的版本…"
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>
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function hello() {
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console.log("Hello, Diff Checker!");
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return "Hey there";
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}</textarea
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>
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</div>
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</div>
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<!-- 工具栏 -->
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<div class="flex flex-wrap items-center justify-between my-4 gap-4">
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<div class="flex flex-wrap items-center gap-4">
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<!-- 语言选择 -->
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<div
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class="flex items-center gap-2 bg-slate-100 px-4 py-1.5 rounded-full"
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>
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<label class="font-medium text-slate-700 text-sm"
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>🔤 语言高亮</label
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>
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<select
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id="languageSelect"
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class="bg-white border border-slate-300 rounded-full px-3 py-1 text-sm font-medium text-slate-800 outline-none cursor-pointer shadow-sm hover:border-blue-500 transition-colors"
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>
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<option value="javascript" selected>JavaScript</option>
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<option value="typescript">TypeScript</option>
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<option value="html">HTML</option>
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<option value="css">CSS</option>
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<option value="json">JSON</option>
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<option value="python">Python</option>
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<option value="java">Java</option>
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<option value="cpp">C++</option>
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<option value="plaintext">纯文本 (无高亮)</option>
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</select>
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</div>
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<!-- 视图切换 -->
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<div class="flex bg-slate-100 rounded-full p-1" id="viewToggle">
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<button
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class="view-option active px-4 py-1.5 rounded-full text-sm font-medium bg-transparent text-slate-500 hover:text-slate-800 transition-all"
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data-view="side-by-side"
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>
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📊 并排
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</button>
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<button
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class="view-option px-4 py-1.5 rounded-full text-sm font-medium bg-transparent text-slate-500 hover:text-slate-800 transition-all"
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data-view="line-by-line"
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>
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📋 行内
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</button>
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</div>
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</div>
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<!-- 操作按钮 -->
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<div class="flex gap-3 flex-wrap">
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<button
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id="swapBtn"
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title="交换左右内容"
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class="inline-flex items-center gap-1.5 bg-white border border-slate-300 rounded-full px-5 py-2 font-medium text-sm text-slate-700 cursor-pointer transition-all shadow-sm hover:-translate-y-px hover:shadow-md hover:border-slate-400"
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>
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🔄 交换
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</button>
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<button
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id="exampleBtn"
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title="重置为示例"
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class="inline-flex items-center gap-1.5 bg-white border border-slate-300 rounded-full px-5 py-2 font-medium text-sm text-slate-700 cursor-pointer transition-all shadow-sm hover:-translate-y-px hover:shadow-md hover:border-slate-400"
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>
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📋 示例
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</button>
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<button
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id="compareBtn"
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class="inline-flex items-center gap-1.5 bg-blue-700 border border-blue-700 text-white rounded-full px-6 py-2 font-medium text-sm cursor-pointer transition-all shadow-md shadow-blue-700/20 hover:bg-blue-600 hover:border-blue-600 hover:-translate-y-px hover:shadow-lg hover:shadow-blue-700/30"
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>
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✨ 对比差异
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</button>
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</div>
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</div>
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<!-- 差异结果区域 -->
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<div
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class="mt-6 rounded-2xl border border-slate-200 bg-white overflow-hidden shadow-sm"
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>
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<div
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class="px-5 py-3 bg-slate-50 border-b border-slate-200 font-semibold text-slate-800 flex items-center justify-between"
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>
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<span class="flex items-center gap-2">📌 差异结果</span>
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<span
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id="diffStats"
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class="text-sm font-normal text-slate-500"
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></span>
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</div>
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<div id="diff-output" class="overflow-x-auto bg-white">
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<div class="empty-message">
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点击「对比差异」查看并排/行内对比，支持语法高亮
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</div>
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</div>
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</div>
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<div class="mt-5 text-right text-sm text-slate-400 font-medium">
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⚡ 基于 diff2html · 高亮 by highlight.js
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</div>
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</div>
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<!-- 依赖库 -->
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<script src="https://cdn.jsdelivr.net/npm/diff@5.1.0/dist/diff.min.js"></script>
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<script src="https://cdnjs.cloudflare.com/ajax/libs/highlight.js/11.9.0/highlight.min.js"></script>
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<script src="https://cdn.jsdelivr.net/npm/diff2html@3.4.47/bundles/js/diff2html.min.js"></script>
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<!-- 核心逻辑 (保持不变) -->
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<script>
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(function () {
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"use strict";
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const leftTextarea = document.getElementById("leftTextarea");
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const rightTextarea = document.getElementById("rightTextarea");
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const compareBtn = document.getElementById("compareBtn");
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const swapBtn = document.getElementById("swapBtn");
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const exampleBtn = document.getElementById("exampleBtn");
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const clearLeftBtn = document.getElementById("clearLeftBtn");
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const clearRightBtn = document.getElementById("clearRightBtn");
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const languageSelect = document.getElementById("languageSelect");
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const diffOutput = document.getElementById("diff-output");
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const diffStats = document.getElementById("diffStats");
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const viewOptions = document.querySelectorAll(".view-option");
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let currentView = "side-by-side";
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function getSelectedLanguage() {
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return languageSelect.value;
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}
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function getHighlightConfig() {
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const lang = getSelectedLanguage();
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if (lang === "plaintext") return false;
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return { enabled: true, language: lang };
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}
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function generateUnifiedDiff(original, modified) {
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return Diff.createTwoFilesPatch(
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"原始",
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"修改",
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original || "",
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modified || "",
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"",
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"",
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{ context: 4 },
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);
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}
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function renderDiff() {
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const leftText = leftTextarea.value;
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const rightText = rightTextarea.value;
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let diffString;
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try {
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diffString = generateUnifiedDiff(leftText, rightText);
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} catch (e) {
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diffOutput.innerHTML = `<div class="empty-message" style="color:#ef4444;">生成差异时出错: ${e.message}</div>`;
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diffStats.textContent = "";
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return;
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}
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const configuration = {
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drawFileList: false,
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matching: "lines",
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outputFormat: currentView,
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highlight: getHighlightConfig(),
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renderNothingWhenEmpty: false,
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};
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let diffHtml = "";
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try {
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diffHtml = Diff2Html.html(diffString, configuration);
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} catch (e) {
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console.warn(e);
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diffOutput.innerHTML = `<div class="empty-message">渲染差异失败，请检查输入</div>`;
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diffStats.textContent = "";
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return;
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}
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diffOutput.innerHTML = diffHtml;
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const selectedLang = getSelectedLanguage();
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if (selectedLang !== "plaintext") {
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const codeBlocks = diffOutput.querySelectorAll("code");
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if (codeBlocks.length > 0 && window.hljs) {
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codeBlocks.forEach((block) => {
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block.classList.forEach((cls) => {
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if (cls.startsWith("language-")) block.classList.remove(cls);
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});
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block.classList.add(`language-${selectedLang}`);
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if (block.dataset.highlighted) {
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delete block.dataset.highlighted;
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}
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try {
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hljs.highlightElement(block);
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} catch (e) {}
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});
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}
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}
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const addedLines = diffOutput.querySelectorAll(".d2h-ins").length;
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const deletedLines = diffOutput.querySelectorAll(".d2h-del").length;
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if (addedLines === 0 && deletedLines === 0) {
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diffStats.innerHTML =
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"<span class='text-emerald-600 font-medium'>✅ 内容相同</span>";
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} else {
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diffStats.innerHTML = `<span class='text-emerald-600 font-medium'>+${addedLines} 行添加</span> | <span class='text-rose-500 font-medium'>-${deletedLines} 行删除</span>`;
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}
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if (!diffHtml.trim() || diffOutput.innerText.trim() === "") {
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diffOutput.innerHTML =
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'<div class="empty-message">两个文本完全相同，没有差异</div>';
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diffStats.innerHTML =
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"<span class='text-slate-500'>⚖️ 无差异</span>";
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}
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}
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function setActiveView(view) {
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currentView = view;
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viewOptions.forEach((btn) => {
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const val = btn.getAttribute("data-view");
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if (val === view) {
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btn.classList.add("active");
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} else {
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btn.classList.remove("active");
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}
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});
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if (
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diffOutput.querySelector(".d2h-wrapper") ||
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diffOutput.children.length > 0
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) {
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renderDiff();
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}
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}
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function loadExample() {
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leftTextarea.value = `function hello() {\n console.log("Hello World");\n return "Hi";\n}`;
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rightTextarea.value = `function hello() {\n console.log("Hello, Diff Checker!");\n return "Hey there";\n}`;
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languageSelect.value = "javascript";
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renderDiff();
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}
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function swapTexts() {
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const temp = leftTextarea.value;
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leftTextarea.value = rightTextarea.value;
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rightTextarea.value = temp;
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renderDiff();
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}
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function clearLeft() {
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leftTextarea.value = "";
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renderDiff();
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}
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function clearRight() {
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rightTextarea.value = "";
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renderDiff();
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}
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compareBtn.addEventListener("click", renderDiff);
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swapBtn.addEventListener("click", swapTexts);
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exampleBtn.addEventListener("click", loadExample);
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clearLeftBtn.addEventListener("click", clearLeft);
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clearRightBtn.addEventListener("click", clearRight);
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languageSelect.addEventListener("change", () => {
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if (
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diffOutput.querySelector(".d2h-wrapper") ||
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diffOutput.children.length > 0
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) {
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renderDiff();
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}
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});
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viewOptions.forEach((btn) => {
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btn.addEventListener("click", (e) => {
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const view = e.currentTarget.getAttribute("data-view");
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setActiveView(view);
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});
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});
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document.addEventListener("keydown", (e) => {
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if ((e.ctrlKey || e.metaKey) && e.key === "Enter") {
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e.preventDefault();
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renderDiff();
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}
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});
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window.addEventListener("DOMContentLoaded", () => {
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renderDiff();
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});
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if (
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document.readyState === "complete" ||
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document.readyState === "interactive"
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) {
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setTimeout(renderDiff, 10);
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}
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})();
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</script>
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</body>
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</html>
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