SurveyToGo: fully supports scripting and usage of branch rules (Jump rules).
From the simplest ones, to the most complicated.

In this ‘How to’ I will show you the simple steps in order to start implementing your branch rules (Jump rules).

Step 1: Add a new instance of a Jump Rule.

Step 2: Configuring The Branch rule’s condition.

Step 3: Configuring the Branch Rules Action & Target.

 

Step 1: Adding a new instance of a Jump rule.

A Branch rule is a condition that will be checked once a question was finished, if the condition is valid, the action configured would be executed:

First of all, you should go into the desired question’s Rules Tab and create a new instance of a branch rule, as the following picture:

Step 2: Configuring the Branch Rule’s condition.

If you click the ‘<Set condition>’ text box, you would be able to enter your own script for the condition, for example:
‘Answer(CurrQues)==2′

Any script that eventually returns a true\false value is valid here.

Step 3: Configuring the Branch Rules Action & Target.

By clicking on the ‘<Set Action>’ text box, you would be able to set the desired action:

And the same for the ‘Target’ text box, for example:

This branch rule, will go to question index 3, if the answer of the current question is 2.