123FormBuilder is a free form builder with conditional logic functionality, allowing its users to change the behavior of their web forms based on the input provided by their respondents.
With conditional logic you can change the behavior of your form based on user input and make your online forms more dynamic. At 123FormBuilder you can create complex and advanced rules that affect the behavior of your online forms. There are three types of rules you can create:
All of the three types of rules are located in the Form Settings → Rules section of your form, under separated tabs.
To create a rule, click on the Add Rule button and a line will be displayed below. Use the first dropdown to select the field, the second to select the operator and the last field to conclude the condition. For input fields, you need to type a value. For choice fields such as radio buttons or check boxes, you have a dropdown with the predefined values is checked and is not checked.
The grey plus button on the right creates a new condition that is linked to the previous one through connectors. Conditions from the same rule are linked either with the connector AND or OR. The grey button will appear next to the last condition of each rule or subrule.
If you want to edit a condition from your rule, hover over it and press the button Edit or Delete if you want to delete it completely. Next to these buttons you’ll find the Subrule button that creates a subrule within the respective condition.
If you want to delete a subrule, hover on top of the condition and select the Delete button.
To delete a rule, hover over the layout of the rule and tick the checkbox on the top right. Press Delete on top to delete it or Duplicate to make a copy of the rule. You can select several rules and delete or duplicate them at the same time. Use the Unselect rules button to clear all selections.