initial commit: slides + practica_resueltos + README

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
2026-05-29 11:50:55 +02:00
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+---
+layout: default
+---
+
+# CheerioWebBaseLoader
+
+<v-clicks>
+
+Carga páginas web como documentos (sin ejecutar JavaScript)
+
+### Instalación
+
+```bash
+npm install @langchain/community cheerio
+```
+
+### Uso
+
+```typescript
+import "cheerio";
+import { CheerioWebBaseLoader } from
+  "@langchain/community/document_loaders/web/cheerio";
+
+const loader = new CheerioWebBaseLoader(
+  "https://blog.langchain.dev/what-is-an-agent/",
+  { selector: "article" } // selector CSS para filtrar contenido
+);
+const docs = await loader.load();
+
+console.log(docs[0].pageContent.substring(0, 300));
+console.log(docs[0].metadata);
+// { source: 'https://blog.langchain.dev/...', title: '...' }
+```
+
+<div class="mt-4 p-4 bg-yellow-500/10 rounded">
+⚠️ Para SPAs o páginas con JS dinámico, usa <b>Playwright</b> o <b>Puppeteer</b>
+</div>
+
+</v-clicks>