I Finally Understood LLMs Using JavaScript

📰 Medium · JavaScript

Learn how to understand LLMs by rebuilding tokenization, embeddings, attention, and text generation using JavaScript

intermediate Published 18 May 2026
Action Steps
  1. Rebuild tokenization using JavaScript to understand how LLMs process text
  2. Implement embeddings in JavaScript to learn how LLMs represent words as vectors
  3. Use JavaScript to recreate attention mechanisms in LLMs and see how they focus on specific parts of the input
  4. Build a text generation model using JavaScript to understand how LLMs create coherent text
Who Needs to Know This

Developers and data scientists on a team can benefit from this article to gain a deeper understanding of LLMs and how to implement them using JavaScript

Key Insight

💡 Rebuilding LLM components in JavaScript can help developers and data scientists understand how they work and make them more accessible

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💡 Rebuild LLMs in JavaScript to gain a deeper understanding of tokenization, embeddings, attention, and text generation!
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