Introduction to Express - Query Parameters

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.

Prerequisites

• Introduction to Express - Express Setup
• Introduction to Express - Express Routing