Introduction to Express - Query Parameters

7m 3s

In this lesson, you will learn about Express Query Parameters. A query parameter, also referred to as a query string, is a parameter or set of parameters attached to the end of the request URL. Query parameters are typically used to filter for a specific set of data as part of the route request. 

Learning Objectives

  • Explain the query parameter
  • Learn how to implement a query parameter
  • Understand the req.query object
  • Learn how to access the query parameter from the req.query object
  • Learn the structure of a route to reject invalid query parameters

Intended Audience

This lesson is intended for anyone who wants to learn about Express.


About the Author
Farish Kashefinejad, opens in a new tab
Full-Stack Development Content Creator
Learning paths

Farish has worked in the EdTech industry for over six years. He is passionate about teaching valuable coding skills to help individuals and enterprises succeed.

Previously, Farish worked at 2U Inc in two concurrent roles. Farish worked as an adjunct instructor for 2U’s full-stack boot camps at UCLA and UCR. Farish also worked as a curriculum engineer for multiple full-stack boot camp programs. As a curriculum engineer, Farish’s role was to create activities, projects, and lesson plans taught in the boot camps used by over 50 University partners. Along with these duties, Farish also created nearly 80 videos for the full-stack blended online program.

Before 2U, Farish worked at Codecademy for over four years, both as a content creator and part of the curriculum experience team.

Farish is an avid powerlifter, sushi lover, and occasional Funko collector.

Covered Topics