LangChain Tutorial on Scrimba
Quick Answer: Pro, 94-minute Intermediate course. You work with LangChain Expression Language (LCEL) to build a chatbot that can use structured knowledge and tool-style patterns. For developers who know JavaScript and want a guided first pass at chaining LLM steps in code.
Last reviewed: March 2026.
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LangChain Tutorial
ProPut yourself on the bleeding edge of AI by harnessing the power of LangChain Expression Language to build a chatbot that has deep knowledge of a
View on Scrimba (opens in a new tab)About This Course
Use LangChain Expression Language (LCEL) in JavaScript to compose LLM steps, tools, and retrieval into a chatbot-shaped project you can reason about—not a one-off prompt in a playground.
- Duration: 94 min
- Level: Intermediate
- Access: Scrimba Pro required
What Makes This Course Distinctive
The course centers on LangChain.js and LCEL, which is how many teams compose prompts, retrievers, and tools without writing spaghetti glue code. Interactive screencasts help because LLM pipelines fail in subtle ways, and you want to tweak one step and rerun immediately. You build toward a chatbot-shaped project so the abstractions connect to user-visible behavior, not notebook snippets alone. Expect a practical slice of the ecosystem rather than every integration and provider. It lines up with the AI Engineer Path if you are stacking AI courses on Scrimba. You still need patience for fast-moving library APIs and should pair this with general prompt and safety reading outside the course.
Who Is This Course For?
JavaScript developers exploring AI app stacks who want LangChain-style composition with real typing practice. Backend or fullstack engineers adding LLM features to existing products also fit.
Not ideal if: You want a Python-only LangChain track, or you need production evals, red-teaming, and compliance as the main curriculum.
Part of These Learning Paths
Choose This If
Choose this course if:
- You want hands-on LCEL patterns instead of only reading LangChain docs.
- You plan to connect retrieval or tool use to a chat UI and need a structured first build.
- You are taking multiple AI courses on Scrimba and want a JavaScript-native chain layer.
Related Courses
Related Pages
- AI Engineer Path
- Practice JavaScript Arrays | Practice API Calls
- JavaScript Courses
- All Courses
- Scrimba Pricing | Pro vs Free
- Scrimba Review 2026
No. This course requires a Scrimba Pro subscription. See Scrimba Pricing for current rates and discounts.
The course contains 94 min of interactive content. Most learners complete it in 1-2 weeks at a moderate pace.
After completing this course, you will have practical experience building real projects using LangChain Tutorial concepts.
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