NextJS Tutorial #23 - POST Method | Backend and Frontend

Description

In this video, we learn how to create a POST API using Next.js App Router and handle form submissions from the frontend. You will understand what a POST API is, how the POST method works, and how to create a backend endpoint inside the app/api folder. We also test the API using the browser, Thunder Client, and Postman. Finally, we connect the API to the frontend using fetch() with a form submission example. Topics covered in this video: --What is a POST API --Creating POST method in Next.js API Routes --Testing POST API using Thunder Client --Testing POST API using Postman --Frontend fetch() with form submit --Sending JSON data to backend --Common interview questions on POST APIs in Next.js This video is perfect for beginners, students, freshers, and developers building full-stack applications with Next.js in 2026. 📢 Subscribe & Turn On Notifications to follow this NextJS Course Day-by-Day! 📢 *Resources:* 👉 *NextJS Documentation* - https://nextjs.org/learn/react-foundations 👉 *GitHub Code Link* - https://github.com/mohitdjcet/nextJS-Tutorial 📂 *Playlist Links:* - DSA Full Tutorial: https://www.youtube.com/playlist?list=PLsjpRo2EZP1LKQePmuWv8jppLddppmGkn - React 19 Full Course : https://youtu.be/cHIn7PUAxlg - NodeJS Full Course: https://youtu.be/pdk60AyhMNM - JavaScript Full Course: https://youtu.be/moRFcW7xayc -GitHub Copilot Full Course:https://youtu.be/hebwERejgI4 - HTML Crash Course : https://youtu.be/Zb_-6SttO3M - CSS Crash Course : https://youtu.be/b7PlBCjAJco 🔗 *Follow Me for Updates:* - TopMate:[Connect with Me](https://topmate.io/mohitdecodes) - WhatsApp:[Connect with Me](https://whatsapp.com/channel/0029Vb6CABUIHphQqGRYP71u) - Instagram: [Connect with Me](https://www.instagram.com/mohit_decodes/) - Facebook: [Connect with Me](https://www.facebook.com/mohitdecode/) - LinkedIn: [Connect with Me](https://www.linkedin.com/in/mohitdecodes/) - GitHub: [Explore My Projects](https://github.com/mohitdjcet/) nextjs post api tutorial, create post api nextjs app router, nextjs api routes post method, nextjs form submit api example, nextjs backend tutorial 2026, nextjs rest api post example, thunder client postman nextjs api, nextjs interview questions api routes, mohit decodes nextjs #nextjs #apiroutes #backend #postapi #nextjs2026 #webdevelopment #frontenddevelopment #javascript #learnnextjs #coding #mohitdecodes --- Copyright Notice: © Mohit Decodes. All rights reserved. Unauthorized reproduction or distribution of this content is prohibited. For permissions, contact via LinkedIn or email.