Query strings are a way to pass information between web pages and applications, often used for filtering, searching, or customizing the user experience. By extracting data from query strings, web applications can adjust their behavior based on user input or other contextual information provided via the URL.

## Example
Let's consider a simple URL example with a query string: 
```
https://example.com/products?category=electronics&price=100
``` 
In this URL:
- The base URL is `https://example.com/products`;
- The query string begins with a question mark `?`;
- There are two parameters, `category` and `price`;
- The values associated with these parameters are `electronics` and `100`.

When a user accesses this URL, the web application can read and interpret the query string. For instance, it could filter products by "electronics" category and display items priced at or below $100. This enables users to access specific content or custom views of a website directly.

Learn to manage navigation in React applications using React Router. Understand the structure of URLs and the role of routing in web apps. Set up React Router to create multi-page applications with dynamic content based on URL paths. Work with advanced features like query strings and URL parameters to handle application state and user navigation.

Learn the theoretical basics of concepts such as URL, domain, protocol, query parameters, and more. Understand the significance of routing in web applications and why we need the React Router library.

Discover how to create an entire React application from scratch, with the ability to display content that adapts based on the URL using React Router functionality.

Explore using query strings for sharing and managing application state via URLs, work with different data types in query parameters, and leverage React Router for navigation and effects based on URL changes.

React Router Essentials

Understanding Query Strings in URLs

React Router Essentials

Understanding Query Strings in URLs