hands-on lab

Working With Express - Route and Query Parameters

Up to 45m
Get guided in a real environmentPractice with a step-by-step scenario in a real, provisioned environment.
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In this lab, you will learn how to create routes that will accept route and query parameters inside an Express application. The route parameter,  which is sometimes referred to as the path parameter, is a named segment of the route and is used to access a specific resource of data. A query parameter, also known as a query string, is a set of parameters attached to the URL. The query parameter is often used to request data based on given criteria. The lab scenario is a clothing company that is creating a custom CRM for its customers. You are building the routes for this express application. The data structure for this application is located in the customerdata.js file that is inside the data folder. You can use this as a reference to understand how the routes are created to access specific data resources. If this is your first time working on the new express lab, make sure to watch the Introduction to Express Labs Video.

Learning Objectives

Upon completion of this beginner, you will be able to:

  • Understand how route parameters work in Express
  • Understand how query parameters work in Express
  • Be able to implement a GET route with a route parameter as part of the path
  • Be able to implement a GET route to capture a query parameter

Intended Audience

  • Software Engineers


Completion of the following content is strongly recommended before attempting this lab:

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

Lab steps

Creating a GET Route With a Route Parameter for the User ID
Creating a GET Route With That Accepts a Query Parameter for User Shirt Size
Creating a GET Route With a Route Parameter for User State
Creating a Get Route With That Accepts a Query Parameter for User Postal Code