What are Postman collection variables and how do I use them?

What are Postman collection variables and how do I use them?

Postman collection variables are key-value pairs that allow you to store and reuse values across requests in a collection. You can define them in the collection settings and reference them in your requests using the syntax {{variableName}}.

Can you give me an example of how to set a collection variable?

Sure! To set a collection variable, go to your collection, click on the 'Variables' tab, and add a new variable by providing a name and value. For example, you could create a variable named 'baseUrl' with the value 'https://api.example.com'.

How do I reference this variable in my requests?

You can reference the variable in your request URL or body by using the syntax {{baseUrl}}. For instance, if you want to make a GET request to an endpoint, you would use {{baseUrl}}/endpoint.

Can I update the value of a collection variable during a request?

Yes, you can update the value of a collection variable using the 'Tests' tab in your request. You can use the pm.collectionVariables.set('variableName', newValue) method to change its value.