LangChain supports both Python and JavaScript. This book focuses on the JavaScript version of LangChain.Price will increase soon!Save your time and learn up to 3X faster with a structured learning system that's carefully crafted for beginners.LangChainJS For Beginners will help you harness the power of LangChain and JavaScript to develop AI-powered applications.In this book, I'll be using a step-by-step, practical approach so that you can build cutting-edge AI solutions using LangChain and JavaScript.By the end of the book, you will understand how to build a Next.js web application that harnesses the power of LLMs such as OpenAI's GPT and Google's Gemini.What You'll LearnUnderstand the benefits of using LangChain.jsMaster LangChain features such as chains, agents, and document loaderIntegrate open-source LLMs into LangChainCreate prompt templates for specific use casesMaster LCEL, the LangChain Expression LanguageCreating chunks and embeddings using a vector databaseHow to chat with PDF documents using AIHow to chat with YouTube videos using AIHow to send multimodal messages to AIUse Next.js and LangChain to create AI-powered web applicationsDeploying AI-powered web application to productionWho is this for?Software Engineers and Developers wanting to learn how to build Generative AI applications with LangChain and JavaScript.JavaScript beginners wanting to explore LangChain and LLM programmingThe book is designed to be easy to understand accessible to anyone looking to learn LangChain.It provides a step-by-step practical guide that will help you understand how to use LangChain to develop AI-powered applications.Plus, I take extra time to make sure my book is engaging and fun so you will stay motivated.Book ContentIn the contents of this book, we will Chapter 1: Introduction to Generative AI Applications Chapter 2: Your First LangChain Application (With Google Gemini)Chapter 3: Using OpenAI LLM in LangChainChapter 4: Using Open-Source LLMs in LangChainChapter 5: Enabling User Input With PromptsChapter 6: LangChain Prompt TemplatesChapter 7: The LangChain Expression Language (LCEL)Chapter 8: Regular Sequential ChainsChapter 9: Implementing Chat History in LangChain Chapter 10: AI Agents and ToolsChapter 11: Interacting With Documents in LangChainChapter 12: Uploading Different Document TypesChapter 13: Chat With YouTube VideosChapter 14: Interacting With Images Using Multimodal MessagesChapter 15: Developing AI-powered Next.js ApplicationChapter 16: Deploying Next.js AI Application to ProductionWe focus only on the essentials and apply what we've learned by building simple projects using JavaScript and Langchain.You will see how LangChain can integrate into JavaScript web framework like Next.js seamlessly.RequirementsTo experience the full benefit of this book, basic knowledge of JavaScript and Next.js is required.Accelerate Your Coding JourneyStop wasting your precious time trying to connect incomplete tutorials from different sources.