Ninja Forms Conditional Logic is a powerful feature of the Ninja Forms plugin for WordPress, which allows you to create dynamic forms based on user input. With Conditional Logic, you can set conditions to show, hide, or modify form fields depending on the user's selections or answers to previous questions. This enhances the user experience by creating personalized forms that adapt to the inputs provided.

Key Features of Ninja Forms Conditional Logic:

1. Show or Hide Fields Based on User Input:
   • You can display or hide specific fields based on the answers provided by the user in previous fields. For example, if a user selects "Yes" to a question, additional fields can appear for more details. If they select "No," those fields will be hidden.
   • This helps reduce form length and only shows relevant questions to the user.
2. Control Form Actions:
   • Conditional logic can be applied to control the form’s behavior. For example, you can make a field required or optional based on other fields’ values or set default values dynamically.
   • You can also decide if form submission should be allowed based on certain conditions, enhancing form validation.
3. Customizable Logic Rules:
   • Conditional Logic rules can be built using simple "if this, then that" statements. You can create conditions for different types of inputs, such as text fields, checkboxes, radio buttons, select menus, etc.
   • These rules can combine multiple conditions, allowing for complex logic (e.g., if a user selects a specific option AND provides a specific input, show another field).
4. Support for Multiple Conditions:
   • You can create more than one condition for a specific field, allowing for more complex forms. For example, you could show a field only if a user selects a particular option AND fills in another field with a specific value.
5. Conditional Actions and Email Triggers:
   • You can trigger conditional actions based on form submissions. For example, send a different email confirmation based on user selection or redirect to a different page based on what the user chooses in the form.
   • This functionality is especially useful for creating multi-step forms, surveys, or order forms where different information is needed based on initial choices.
6. Easy Interface to Set Conditions:
   • Setting up conditional logic in Ninja Forms is user-friendly. Using an intuitive graphical interface, you can easily select the fields, actions, and conditions without needing any coding knowledge.
   • You can add conditions directly within the form editor, and the changes are applied instantly, giving you a live preview of the behavior.
7. Conditional Logic for Notifications:
   • You can set conditional logic for form notifications as well. For example, you might want to send a specific thank you message or confirmation email only when certain conditions are met (such as a specific checkbox or option being selected).
   • This allows you to send tailored, relevant emails to users based on their inputs.
8. Multiple Condition Types:
   • Ninja Forms supports a variety of condition types, including:
     • Is Equal To: The value matches exactly what was selected or input.
     • Is Not Equal To: The value does not match the specified selection.
     • Contains: The field contains the specified text.
     • Does Not Contain: The field does not contain the specified text.
     • Is Greater Than / Less Than: This is useful for numeric fields or ranges.
9. Conditional Logic for Multi-Page Forms:
   • If you're using a multi-page form with Ninja Forms, you can apply conditional logic to decide whether to display the next page based on user input, making your forms more dynamic and personalized.

How to Use Conditional Logic in Ninja Forms:

1. Install and Activate Ninja Forms:
   • If you haven’t already, install and activate the Ninja Forms plugin from the WordPress Plugin Repository.
   • For Conditional Logic, you may need to install the Ninja Forms Conditional Logic Add-On, which is available as a premium extension.
2. Create or Edit a Form:
   • Go to your WordPress dashboard and navigate to Ninja Forms > All Forms.
   • Create a new form or select an existing form to edit.
3. Add Fields to the Form:
   • Add the fields that will be part of your form (text fields, dropdowns, radio buttons, checkboxes, etc.). You can later define conditions for when each field is shown or hidden.
4. Enable Conditional Logic for a Field:
   • Click on the specific field that you want to apply conditional logic to.
   • In the Field Settings panel, scroll down to the Conditional Logic section.
   • Enable Conditional Logic for the field.
5. Set the Conditions:
   • For each field, you can define the condition for when it should be shown or hidden. For example:
     • Choose the field (e.g., a dropdown or checkbox) that the condition is based on.
     • Set the operator (e.g., “is equal to” or “contains”).
     • Choose the value that triggers the condition (e.g., a specific option in a dropdown).
   • You can also add multiple conditions to create more complex rules.
6. Test the Conditional Logic:
   • Once you’ve set the conditions, preview your form on the front end of your website.
   • Test the form to ensure that the fields are showing or hiding based on the selections or inputs the user provides.
7. Save and Publish:
   • Once you’re satisfied with the conditional logic settings, save your form.
   • Publish or embed the form on your website using a shortcode, widget, or block.

Example Use Cases for Ninja Forms Conditional Logic:

1. Survey Forms:
   • Display different sets of questions based on the user’s previous answers. For example, if a user selects “Yes” to "Have you ever traveled abroad?" additional fields about their travel experience can be displayed.
2. Product Order Forms:
   • Show different product options based on the initial selection. For example, if a user selects a certain product type, additional custom fields related to that product can appear, such as color or size.
3. Event Registration Forms:
   • If a user selects "VIP" ticket, show additional fields for special requests like meal preferences or additional services.
4. Customer Feedback Forms:
   • Use conditional logic to show specific questions depending on the customer’s rating or feedback. For instance, if the user rates a service poorly, you can show additional fields asking for more detailed feedback.
5. Lead Generation Forms:
   • Customize the form based on user responses to qualify leads. For example, you can ask whether a user is looking for a service, and if they select "Yes," you can show additional questions about their needs.

Conclusion:

Ninja Forms Conditional Logic is a robust tool that allows you to create dynamic, interactive forms on your WordPress site. It improves the user experience by showing relevant fields based on previous inputs, making your forms more engaging and efficient. By using conditional logic, you can streamline the form submission process, reduce friction for users, and tailor the form content to gather the most relevant information. This feature is ideal for creating personalized forms, multi-step forms, surveys, and questionnaires that respond to user input in real-time. Whether you're collecting leads, processing orders, or gathering feedback, Ninja Forms Conditional Logic can help you design forms that adapt to the user’s needs.