JMeter tutorial 17 - How to use Functions and Variables in JMeter

This is the seventeenth video of JMeter Tutorial series which covers how to use functions and variables in JMeter
Learning:

Functions:
• Values that can populate fields of any sampler or other element in a test tree
• Syntax: ${__functionName(par1, par2, par3…..)}, ${__functionName}
• Functions are case sensitive

Variables:

• Container to store values
• Syntax: ${variableName}
• Variables are local to a thread group

Function examples:

• Log – to log messages
Example: ${__log(hello Jmeter)}

• BeanShell – It evaluates the script passed to it and returns the result
Example: ${__BeanShell(1234*678,)} , ${__BeanShell(234*67,variable1)}

• Time – returns current time in various formats
Example: ${__time(dd/MM/yyyy,date)}

• Counter – Generates a new number each time it is called, starting from 1, and it gets incremented every time by +1
Example: ${__counter(,)}

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Automation Anywhere Tutorial Playlist:

[abridgetool]

How should I declare global variable which can be used between multiple thread groups? Thanks.

[Belalakhtar]

It increments value by 2 as like 2, 4, 6, 8... not as 1, 2, 3, 4. I am using the same as is ${__counter(, )} function. What could be the possible cause that it increment by 2 in place of 1? Support please.

[tulasiraochintala]

Hi. How to send content-Length in jmeter headers. its dynamically changing the value for each request

[TheBharat]

How to use functions in the text file.I am using a csv to read test data and want to update some values in the text file using the functiins

[kirankumaralam]

How can we pass the form parameters Jmeter...I have viewed all your videos.. did not find

[shirsN]

Hi, I'm using having http request under which i have one jdbc preprocessor. This preprocessor would run a query and will fetch a field which can either be a integer or a null value. Under jdbc preprocessor I have variable name as abc. Now i want to pass value of this ${abc} variable to http request json field say "pqr" : ${abc} . So when ${abc} holds intger value it works fine but if it has null value it returns ${abc} instead of null . How to make this work, would you please assist. As my requirement is also to pass null

[MultiDpz]

How to pass value from one thread to another ? ( how to set global variable ) ?

[vikasviky]

I need a help!
How can I extract JSON value from the encrypted value This is in Base64 encrypted format.
After Decode.
is there any function or Javascript library?

[Imdeeparajan]

Can you explain the random function and how to create Random values from csv file ....like when we need different values for sign up - userid and password. Can you please create a video on this

[kranthikumar]

Can you tell me how to use utc date and time zone in jmeter