What is Langchain.js and its use cases

Example app with Langchain.js and React.js: https://www.js-craft.io/blog/reactjs-...


Langchain is a framework meant to facilitate the interaction between an AI model and a traditional web application.

Langchain is to the LLM - webapp communication kind of what jQuery is to Javascript, or Django to Python. It gives you a standardized way of doing stuff.