No-Code Logic Builder
Control what respondents see without writing a single line of code. Set conditions on pages, panels, questions, validation rules, and default values — all from the same interface you design the form in.
Every respondent sees what's relevant to them
Long forms feel short when they only show what matters. A respondent who answers "No" to a screening question skips the entire follow-up section without ever noticing it existed.
- Visual rule editor — no code, no formulas to memorize
- Conditions can reference any prior question or computed value
- Multiple conditions combined with AND / OR operators
- Logic applies to pages, panels, individual questions, and validators
- Default values can be driven by expressions, not just static data
- Custom expression functions for domain-specific calculations
What logic can control
Conditions apply at every level of the form hierarchy — from an entire page down to a single choice option.
Page Branching
Skip pages or jump to specific pages based on responses. Build survey flows that adapt to each respondent without showing irrelevant sections.
Panel Visibility
Show or hide entire groups of questions based on a condition. Panels keep related questions together while logic keeps them contextually relevant.
Question Display Rules
Individual questions can appear or hide based on any combination of prior answers, computed scores, or metadata passed at load time.
Conditional Validation
Required-field rules, format checks, and custom validators apply only when a question is relevant — avoiding confusing errors on hidden fields.
Dynamic Defaults
Pre-populate a field with a calculated value or an answer from an earlier question, so respondents confirm rather than re-enter known information.
Expression Engine
Write conditions using a readable expression syntax — compare values, use arithmetic, call built-in functions, or register your own custom functions.
Build adaptive forms without touching code.
See how conditional logic works in the Endatix form designer.
Book a demoBuild adaptive forms without touching code.
See how conditional logic works in the Endatix form designer.
Book a demo