How to Use Variables in Postman

Variables allow you to store and reuse values in your requests and scripts.
Try it yourself: www.postman.com/devrel/worksp...
Learn more: learning.postman.com/docs/sen...
00:00 - Start
00:20 - Variable Scopes
01:58 - How to re-use values using variables
03:52 - How to hide sensitive data using variables
05:48 - How to update values on the fly using variables
08:00 - How to loop over values from a file using variables

[@cjchand]

Excellent overview of Postman variable types and scopes. Truly appreciate the relevant examples used. This is perfect to help educate my users on the right way to manage secrets. Thanks!

[@45632476]

Thank you for a clear explanation. I've expanded my instruments now with "values".

[@7bagette]

Running with a data file was game changer, thank you!

[@markussiebeneick4075]

In the how to hide sensitive data section, by replacing Initial value with Enter API Key Here, should you instead say Add API Key in Current Value?

[@postman]

If used in "Current Value" then the collection would be pulling that text instead of the API Key and therefore the authentication would fail. Replacing the initial value with "add your api key as the current value" would be a good alternative here.

[@fabioquixada2316]

Niiiiice!!!

[@alexr7289]

Is there a way to view the variables used in the API call in the summary screen without having to drill into the call ie show it on the POST line.

[@postman]

Hey Alex, if you hover over the variable you'll see what it's resolving to.

[@jp-uno]

your example didn't work at 7:25 because it wasn't an integer. How to set to set the variable as an integer?

[@postman]

You can either save the value as an integer instead of string. Or you can cast the value to an integer by using the JavaScript method `parseInt()`.

[@shirishcin]

difference between int variable and string variable ? how can we declare those ? any difference "{{name}}" and for int as {{idnum}}

[@postman]

Postman stores variables as strings. If you want to use an integer variable in a script, you can cast `idnum` to an integer data type, such as `parseInt(idnum)`.