1. You can use JavaScript/Deluge snippets to display/hide the question or to skip the pages based on code (arithmetic operations) result, from previous questions. Only basic codes can be used and executed in a survey.
   
   
2. Built-in variables provided in the insert variable box can be used. All other built-in JavaScript methods are restricted. Only the functions listed below will be allowed.   ( isNaN, isFinite, parseFloat, parseInt, Math, createDate.)
   For example, we can use application.createDate() instead of Date() or this.Date(). Both Date() and this.Date() are restricted.
   
   
3. Variables can only be declared using var/const/let before entering the code.
   
   
4. If the JavaScript snippet code you have entered in the condition is invalid or takes longer time than expected, the condition result will be considered as false.
   
   
5. To ensure security, all responses are treated as String data. If a user intends to utilize a response as an integer, they must employ the "parseInt" function to convert it from a string to an integer. This is crucial, especially for number-type or slider questions, as the response might be employed in conditions or calculations for security purposes.
   
   
6. If restricted keywords are used, an error will be thrown and the logic/condition will not be saved.
   
   The Following keywords are restricted to be saved :

1. If your survey is multilingual, you need to enter the specific language’s translation code to enable the condition or logic within the survey. For example, for the Tamil language "ta" should be given.
   
   
2. If you have added conditions using the Date & Time question, then you have to use the same date format used in the previous question.
   
   
3. You can do sample test while adding conditions to question/pages.To test, enter the code, then click Test with sample data. It will generate the sample data. Click the Run button to view the sample result. You can add code and regenerate or modify the sample data as many times as you want to test.

1. To track the flow of the code, you can use the log feature provided in the insert variable box. You can view the log along with result of the sample test.
   
   
2.  While using script conditions in URL Parameter, you must enter  the param value inside square brackets. For example, application. survey.urlparam ["userName"] in JavaScript, because special characters are not allowed in the JSON key in dot notation.
   
   
3. To avoid syntax errors, javascript code should contain javascript syntax and it should always end either with semicolon or be properly wrapped inside curly braces.

var rating = application.survey.question.C.response + application.survey.question.D.response; 
if (application.survey.question.A.response == "Single" || application.survey.question.B.response == 2)
{
    return true;
}
else if (rating > 10)
{
    return true;

The provided Deluge code snippet demonstrates a simple condition using an if statement.
This code snippet checks a specific response value and returns true if it matches the string 'Single'.

 
if(application.get('survey').get('question').get('C').get('response') == 'Single' )
 
{
 
return true;
 
}

Read more about built-in Deluge functions here. You can only use text functions, Date- Time functions, Number functions and some Common functions.

1. Hover over the question that you want to apply the logic to, then click .
   
   
2.  Click Display Logic. You can also click the question to edit and select the Display Logic tab.
   
   
3.  Click the dropdown and select the display/hide option for the question.
4. Always display this question
   
5. Never display this question
   
6. Display this question only if a certain condition is met
   
7. Hide this question only if a certain condition is met
   
   
8.  If you select Display this question only if a certain condition is met, or Hide this question only if a certain condition is met, the Condition section will be displayed.
   
   
9. Select a condition in the Condition List Box.
   

1. Select a question or custom script (JavaScript snippet) in the If dropdown.
   You can either use Built in Functions or write a simple JavaScript function based on your requirement, to set up a Display logic condition for that particular question.
    

1. Type in or choose the answer you're looking for in the Operand box.

1. Click + to add multiple conditions.

Note Multiple conditions work in a pattern similar to this: (((((C1 and/or C2) and/or C3) and/or C4) and/or C5) and/or ...) where C1, C2, C3, ... are the conditions.

1. Click X to remove conditions.
   
2.  Click And/Or to connect multiple conditions. Click Save.
   

1. Click the question that you want to apply the answer display logic to, and select the Answer Display Logic tab. You could also hover over the question and select Actions > Display Logic to get there.
   
   
2. Click the Add Logic tab.
   
   
3. Choose a display/hide condition from the dropdown list.
   
   
4. Click Select Choice to add the choices you want to display or hide.
   
   
5. Click the If dropdown and select an appropriate option.
   
   
6. Select a condition in the Condition list.
   

1. Select a question or custom script (JavaScript snippet) in the If dropdown.
   You can either use Built in Functions or write a simple JavaScript function based on your requirement, to set up a Answer logic condition for that particular question.
   
   

1. Type in or choose the answer you're looking for in the Operand box.
   
   
2. Click + to add multiple conditions.
   
   
3. Click X to remove conditions.
   
   
4. Click And/Or to connect multiple conditions.
   
   
5. Click Save.
   

1. Click the Page Skip Logic icon.
   
   
2.  Click Add Condition to redirect your respondents to specific pages based on their response.

1. Select a question or custom script (JavaScript snippet) in the If dropdown. You can either use Built in Funtions or write a simple JavaScript function based on your requirement, to set up a page skip logic condtion to your survey.
   

1. Select an operand in the second dropdown.
   
   
2. Choose an answer from the Select an option dropdown list.
   
   
3. Select the related action for the answer selected in the skip to dropdown list. You can redirect respondents  to the survey end page or to disqualification page.

1. Click + to add multiple conditions.
   Note: Multiple conditions work in a pattern similar to this: (((((C1 and/or C2) and/or C3) and/or C4) and/or C5) and/or ...) where C1, C2, C3, ... are conditions.
   
   
2. Select And/Or to connect multiple conditions.
   
   
3. Select Go to next page in the default flow if you want your respondents to move to the next page after they're done with the current page.

1. Select Survey End Page if you want to send them to the end page of the survey instead of moving them to a specific page.
   
   
2. Select Disqualification Page if you want to send them to a survey disqualification page.
   
   
3. Click Save.
   

1. Click the Hub tab and select Triggers.
   
   
2. Click Create in the Trigger Emails section.
   
   
3. Click Add Condition to set a condition to send an email based on the requirement.
   
   
4. You can choose any one of the following options to trigger emails.
   
   Question : Sending email based on the answer to a particular question.
   Response : Sending email based on the survey completion status based on the responses recieved.
   
   
5.  JavaScript /Deluge Snippet : Send email triggers by enabling programming language codes. You can either use Built-in Functions or write a simple JavaScript /Deluge function based on your requirement.

1. Click + to add multiple conditions.
   

1. Select a question from the If dropdown list.  
   
   
2. Set a condition for the selected question.
   
   
3. In the Operand box, type in the answer for the condition you've set.When the user submits their response, and if the question meets the conditions you've set, an email will be sent to the respondent. You can also apply multiple logic options in an email trigger.
   
   
4. Click Save. 

1. To add logic for your survey end page:
     
2. Click Survey End Page in the Settings tab.
   
   
3. Click Add Logic in the End Page Logic section.
   
   
4. Select a condition in the If list.
   
   
5. Select a question or custom script (JavaScript/Deluge snippet) in the If dropdown. You can either use Built in Functions or write a simple JavaScript/Deluge function based on your requirement, to set up a Survey end page condition for the survey.
   
   
6. Click X to remove conditions.

1.  Click And/Or to connect multiple conditions.
   
   
2. Click Save.
   
   

Advanced piping using Java Script Snippets :

To insert a Javascript Variable:

1. To add a new question, click the question type you'd like to use on the Survey Builder page, or drag a question from the left pane and drop it in the builder.
   
   
2. Click on the Insert Variable dropdown in the top-right corner and choose Javascript Snippet from the provided list.
   
   

1. Enter the code.Click insert variable(inside one), to use inbuilt functions in code.
   
2. Click Test with sample data.
   
3. Click the Run tab and check the result.
   
4. Click the Save button to save your changes.
   
   

1. Select the question in the survey in which you want to edit or delete the variable.
   
2. Click on the inserted variable
   
3. Click to edit the variable.
   
4. Make the necessary changes and click Update.
   
5. Click to delete the variable.