How to Resolve the ‘props’ is not defined Error in React Apps

Introduction

React is a powerful library for building user interfaces, but even seasoned developers can encounter common errors that can disrupt the development process. One such frequent issue is the ‘props’ is not defined error. This can be a stumbling block, especially for those new to React or programming in general. In this article, we will delve into this error, understand why it happens, and explore possible solutions.

Understanding the Error

The ‘props’ is not defined error usually occurs when you try to access the props object in a component but it's not properly passed or defined. This is a common mistake, especially when refactoring components or converting functional components to class components. It's crucial to understand how props work to effectively pass data between components in React.

Common Scenarios and Solutions

1. Defining Props in Functional Components

For functional components, props are usually passed as an argument to the function. If you forget to declare props in the function signature, you will encounter the error. Here's how you can correctly define it:

function MyComponent(props) {
  return
{props.title}
;
}