CORS, also known as Cross-Origin Resource Sharing, is something every web developer has to deal with at some point. Chances are if you are watching this video then you are probably dealing with a CORS error right now. In this video I will tell you what CORS is and how you can fix CORS errors. 📚 Materials/References: CORS Blog Article: https://blog.webdevsimplified.com/2021-05/cors 🌎 Find Me Here: My Blog: https://blog.webdevsimplified.com/ My Courses: https://courses.webdevsimplified.com/ Patreon: https://www.patreon.com/WebDevSimplified Twitter: https://twitter.com/DevSimplified Discord: https://discord.gg/7StTjnR GitHub: https://github.com/WebDevSimplified CodePen: https://codepen.io/WebDevSimplified ⏱️ Timestamps: 00:00 - Introduction 00:24 - Basic CORS 03:30 - Preflight Methods 05:19 - Sending Credentials #CORS #WDS #NodeJS