Conditional logic enables you to create dynamic form paths that guide respondents to relevant questions based on their responses. Respondents never have to skip irrelevant questions — because with display logic, they’ll never even see them.
Conditional logic is available for free to all Formly users.
How to create logic
1. Open form from your Dashboard and go to Logic tab (Display Logic will be selected as a default)
2. Click on Display Logic and then + Add Logic
3. Select the question and appropriate condition.
After adding a conditional logic block to your form, you can select from three types of actions to trigger. You’ll find them in the Then dropdown:
Show
In the example below, Q2 and Q3 will be shown when the Respondent selects Yes in Q1.
Newsletter Preferences Form
Q1. Would you like to customize your newsletter topics?
Yes
No
Q2. What topics are you interested in?
(Multiple choice: Marketing, Tech News, Product Updates)
Q3. How often would you like to receive emails?
Weekly
Monthly
Conditional Logic: If Q1 = Yes → SHOW Q2 and Q3
Click ⠇next to the logic block to add new condition, remove, or duplicate.
If you set Show logic then the question will be hidden by default and it is only shown when the condition is met.
If you use Show logic, the question will appear in its original position in the form — it won’t skip ahead.
If you want the respondent to go directly to a specific question, use Jump to instead.
Pro Tip! Change form settings to "Single Page Layout" while testing so it's easier to check the logic.
Below, you can try out the form we built in this guide:
Newsletter Preferences Form - https://getformly.app/Xl4SvQ
Hide
In the example below, Q2 will be shown by default but when the Respondent selects No in Q1 then Q2 gets hidden.
Event Registration Form
Q1. Will you attend the event in person?
Yes
No
Q2. Please select your dietary preferences (for catering):
(Multiple choice: visible by default)
Vegetarian
Vegan
Gluten-Free
Halal
No preference
Conditional Logic: If Q1 = No → HIDE Q2
If you set Hide logic then the question will be shown by default and it is only hidden when the condition is met.
Pro Tip! Change form settings to "Single Page Layout" while testing so it's easier to check the logic.
Below, you can try out the form we built in this guide:
Event Registration Form - https://getformly.app/ltzBTL
Jump to
In the example below, If Q1 = Website Navigation → JUMP to Q4 Otherwise → Continue to Q2
Service Feedback Form
Q1. What service did you use?
Technical Support
Billing
Website Navigation
Q2. How satisfied were you with the support agent?
Very satisfied
Neutral
Unsatisfied
Q3. What could we improve?
Q4. What part of the website was confusing?
Homepage
Login
Checkout
Conditional Logic:
If Q1 = Website Navigation → JUMP to Q4
Otherwise → Continue to Q2
Note 1 - Jump to option only works with the Slides Layout (one question per page). It won’t work in the Single Page Layout (all questions on one page).
Note 2 - Jump to option only works when the IF condition is based on a question. It doesn’t work with Variables — use the Show option instead.
Below, you can try out the form we built in this guide:
Service Feedback Form - https://getformly.app/AyDPZ3
4. Click Save to set the display logic for your form.
Here are more examples of when to use Logic:
Show a relevant Thank You screen based on their quiz score.
Display the top category respondents picked the most in a personality quiz.
Smart product recommendations based on respondents answers.
Show or hide questions in a newsletter preferences or event registration form based on their answers.
Test your form
Before sending your form to respondents, test different scenarios by selecting different answer options each time.