Parsing URL & Query Params and sending back appropriate data in NodeJS with Express & MongoDB
Tehseen Ahmed
Self Employeed MERN Stack Developer
Let's Talk About Url and Query Parameters
URL Params or Route Params!
- Route parameters are named URL segments that are used to capture the values specified at their position in the URL.
- The captured values are populated in the req.params object, with the name of the route parameter specified in the path as their respective keys.
Route path: /users/:userId/books/:bookId
Request URL: http://test.com/users/34/books/8989
req.params: { "userId": "34", "bookId": "8989" }Query Params!
- In simple terms, a query string is the part of a URL (Uniform Resource Locator) after the question mark (?).
- It is meant to send small amounts of information to the server via the URL.
- This information is usually used as parameters to query a database, or maybe to filter results. It's really up to you what they're used for.
Request URL: http://test.com/?username=ali&age=18