comparison code before-after diff monospace comparison code before after diff monospace refactor migration show before and after code comparison display side-by-side code diff
Code Comparison
Fetch pattern JSON:
curl https://webspire.de/patterns/comparison/code.json code.html
<section class="ws-comparison bg-[var(--ws-comparison-bg)] py-16">
<div class="mx-auto max-w-4xl px-6">
<div class="mx-auto max-w-2xl text-center">
<h2 class="text-2xl font-bold tracking-tight text-[var(--ws-comparison-text)] sm:text-3xl">Code Comparison</h2>
<p class="mt-3 text-base text-[var(--ws-comparison-text-soft)]">See the difference at a glance.</p>
</div>
<div class="mt-10 grid gap-6 sm:grid-cols-2">
<div class="overflow-hidden rounded-xl border border-red-200">
<div class="flex items-center gap-2 border-b border-red-200 bg-red-50 px-4 py-2.5">
<svg class="h-4 w-4 text-red-500" fill="none" viewBox="0 0 24 24" stroke-width="2" stroke="currentColor"><path stroke-linecap="round" stroke-linejoin="round" d="M6 18L18 6M6 6l12 12"/></svg>
<span class="text-sm font-semibold text-red-700">Before</span>
</div>
<pre class="overflow-x-auto bg-[var(--ws-code-preview-bg)] p-4 font-mono text-sm leading-relaxed text-slate-300"><code><span class="text-slate-500">// Nested callbacks</span>
getUser(id, <span class="text-amber-300">function</span>(user) {
getPosts(user, <span class="text-amber-300">function</span>(posts) {
getComments(posts, <span class="text-amber-300">function</span>(comments) {
render(comments);
});
});
});</code></pre>
</div>
<div class="overflow-hidden rounded-xl border border-emerald-200">
<div class="flex items-center gap-2 border-b border-emerald-200 bg-emerald-50 px-4 py-2.5">
<svg class="h-4 w-4 text-emerald-500" fill="none" viewBox="0 0 24 24" stroke-width="2" stroke="currentColor"><path stroke-linecap="round" stroke-linejoin="round" d="M4.5 12.75l6 6 9-13.5"/></svg>
<span class="text-sm font-semibold text-emerald-700">After</span>
</div>
<pre class="overflow-x-auto bg-[var(--ws-code-preview-bg)] p-4 font-mono text-sm leading-relaxed text-slate-300"><code><span class="text-slate-500">// Async/await</span>
<span class="text-amber-300">const</span> user = <span class="text-purple-400">await</span> getUser(id);
<span class="text-amber-300">const</span> posts = <span class="text-purple-400">await</span> getPosts(user);
<span class="text-amber-300">const</span> comments = <span class="text-purple-400">await</span> getComments(posts);
render(comments);</code></pre>
</div>
</div>
</div>
</section>
Details
Responsive Dark Mode Tailwind Only SSR Safe Copy & Paste
Stable Published
comparisoncodebefore-afterdiffmonospace
Slots
| Name | Required | Description |
|---|---|---|
| heading | Yes | Section title and subtitle. |
| before | Yes | Code block showing the old or less desirable approach. |
| after | Yes | Code block showing the new or improved approach. |
Side-by-side code comparison with color-coded before (red) and after (green) panels. Uses monospace font on a dark code background. Ideal for migration guides, refactoring showcases, and API change documentation.