QuestionPro's JavaScript logic facilitates the users to apply custom validation, special effects on the answer selection when the respondent is answering the surveys, etc. which enables the users to use their JavaScript knowledge and customize the survey to enhance the respondent's experience of answering the survey.
Yes, QuestionPro do have a dedicated documentation for the functions which can be used in the JavaScript logic. Also, you'll get the example scripts on the documentation which can be re-used or customized to meet your survey requirements.
Please refer to the detailed documentation for more information: Click here