Which of the following elements is used to define variables in JMeter | How to use

How to use user defined variables in Apache JMeter?

In JMeter, we can define variables in several ways. One way is to use the "User Defined Variables" element in the Test Plan. This element allows us to define variables with key-value pairs, where the key is the name of the variable and the value is the value assigned to it. These variables can be used throughout the test plan by referencing them with the ${variable_name} syntax.

Another way to define variables is to use the "CSV Data Set Config" element. This element allows us to read data from a CSV file and use it to define variables. Each row in the CSV file represents a set of values that can be assigned to variables. In the test plan, we can reference the variables using the same ${variable_name} syntax.

We can also define variables dynamically in a script using the JSR223 sampler. This sampler allows us to write custom code in various languages like Groovy, JavaScript, etc. to define variables based on conditions or logic. The variables can then be referenced in other parts of the test plan using the same ${variable_name} syntax.

Overall, defining variables in JMeter provides flexibility in customizing test plans and allows us to reuse values throughout the test plan.