How to Run JavaScript in Jmeter using External JavaScript Files | Jmeter with below 5.0 Version only

How to Run JavaScript in Jmeter using External JavaScript Files

Run JavaScript in Jmeter or Load External JavaScript in Jmeter: In this tutorial will see how to run JavaScript in Jmeter or loading or running the JavaScript loading from external sources and you can use evaluated values and make use of it in your script.

Why do we need to use JavaScript in Jmeter?
In some scenarios like payment steps or some form submits in the application will use some front end encryption to encrypt the data sending from the browser.
While creating a performance script we should send the correlated and parameter data in the same way the browser is sending. In such cases, we need to encrypt the post data use JMeter before sending it to server.

How will we run JavaScript or external JavaScript in Jmeter?
To run JavaScript in Jmeter we have JSR223 Sampler where we can execute code of groovy, Java, JavaScript, Beanshell, etc.

JSR223 is available as Individual Sampler, Post Processor and Pre Processor for a Sampler

[СашаИванов-яжз]

Thank you from Russia:) Very little information, your video helped a lot!

[pavankarthik]

I am using jmeter 5.6.1 I am not getting javascript option in language section in JSR223 post processor can please help me on this

[AltafMuddassar]

Your voice is not clearly audible. reupload same video with clear voice.

[karthikl]

The concept is good. Pls repost the video with better Audi. It will be good.

[BabuReddyThokala]

Hi bro I am facing issue
1. I have recorded the script in jmeter which is an angular application (main.js, polyfills.js, vendor.js ) files are running in back ground
2. I am getting two values sender id and account id in the same request, I have searched in the all previous requests no where I found that value to do the correlation

Could you please help me how to implement.js files in jmeter and get that values generated to use in the subsequent requests

[namdevbedare]

Thanks it helped...one doubt..my jwt valid for 30 min..I had 20 requests..in that case what I need to do..