Disable Submit Button Until All Fields Are Valid in Form

This snippet changes the JetFormBuilder submit button style until all inputs are valid. It dims or disables the button by adding a CSS class, restoring it once validation passes to improve UX and prevent incomplete submissions.

Specifications

6 January, 2026

Plugin
- JetFormBuilder
Category
- Forms
Programming languages
- CSS
- JavaScript

Source code

Installing Instruction

Copy the entire code snippet to your clipboard.
You can add the snippet in one of two ways:
1. Option A: Using a Custom Code Plugin (Recommended)
  1. Install and activate a plugin such as WPCode Lite, Code Snippets, or Simple Custom CSS and JS.
  2. Create a new snippet of the appropriate type:
    1. JavaScript snippet → paste JS without <script> tags
    2. CSS snippet → paste CSS without <style> tags
  3. Save and activate the snippet.
2. Option B: Using Theme Files or a Custom HTML Widget
  1. Navigate to WordPress Dashboard > Appearance > Theme File Editor.
  2. Open an appropriate theme file (for example, header.php or footer.php), or add a Custom HTML widget in the desired area.
  3. Paste the code snippet:
    1. Keep <script> tags for JavaScript
    2. Keep <style> tags for CSS
  4. Save your changes.

Example Use Case

Use this snippet to disable or visually dim the submit button in JetFormBuilder forms until all form inputs are valid.
Applicable scenarios:

Complex or multi-step forms: Prevent premature submission to reduce errors.
Surveys and registrations: Ensure complete responses before allowing submission.
Online applications: Improve UX by guiding users to correct form completion.

Specifications

Disable Submit Button Until All Fields Are Valid in Form

6 January, 2026

Plugin
- JetFormBuilder
Category
- Forms
Programming languages
- CSS
- JavaScript

Source code

Disable Submit Button Until All Fields Are Valid in Form

Installing Instruction

Example Use Case

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