The differences between Query vs. URL Parameters in Express.js

The differences between Query vs. URL Parameters in Express.js

A frequently asked question is whether you should use query parameters or URL parameters for an API — and where the differences between the two lie, completely independent of the Express.js framework. The differences between Query vs. URL Parameters in Express.js

A frequently asked question is whether you should use query parameters or URL parameters for an API — and where the differences between the two lie, completely independent of the Express.js framework.

Here are all the answers and code samples you need to understand the differences and applications and build your next Express.js API with them.

Basic Syntax

Let’s first have a look at how the two are structured.

Query Parameter:domain.com/path?key=value

URL Parameter: domain.com/path/value

In both cases, the path is optional, of course, we can also accept parameters for the root-URL (domain.com/).

Real examples:

Query Parameter: domain.com/products?search=tomato

URL Parameter: domain.com/products/tomato

In both cases, tomato is the value we send to the webserver.

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