The "cannot read property map of undefined" error occurs when we try to call the map method on a variable that stores an undefined or null value.
Removing a specific item from an array is the most use case a developer runs into. You will learn more than 7 ways to achieve this.
The "cannot read property split of undefined" error occurs when we try to call the split() method on a variable that stores an undefined value.
React is one of the most popular libraries in the frontend world. Being a backend developer for over 10 years, I agree. I started with React 4 years ago and found it incredible 😅. And there is no reason for me to switch. Developers, you can buy some paid courses online