1. You answered your own question: JavaScript code cannot be run in JMeter.
1. Also, if you're on Java 15+ you won't be able able to choose JavaScript in JSR223 test elements because it has been removed from JDK<https://openjdk.org/jeps/372> 2. There could be inconsistencies between Postman JavaScript API and JMeter so you won't have access to pm. namespace in JMeter So you either need to restore JavaScript engine by adding Mozilla Rhino<https://github.com/mozilla/rhino> or switching to GraalVM<https://www.graalvm.org/> or re-write your code in Groovy. The latter option is better from performance perspective as Groovy scripts can be compiled and cached and it matters especially for "heavy" tasks like cryptography. More information: Apache Groovy: What Is Groovy Used For?<https://www.blazemeter.com/blog/apache-groovy> ________________________________ From: Abhitosh Patil <abhitosh...@gmail.com> Sent: Wednesday, April 2, 2025 5:14 PM To: JMeter Users List <user@jmeter.apache.org> Subject: Need to execute javascript using JMeter We have a requirement to generate unique authentication signature to pass as a header in API request. We have a pre-request javascript for same in postman tool. Same javascript we tried in JMeter using jsr223 and beanshell elements. But it's not working. Any solution for this?