How can I insert the value of a first-party cookie into a hidden field in a Webflow form?

Published on
September 22, 2023

To insert the value of a first-party cookie into a hidden field in a Webflow form, you can use JavaScript. Here's a step-by-step guide on how to do it:

  1. Add a Hidden Field to your Webflow form:
  • Open your Webflow project and navigate to the page where you want to add the hidden field.
  • Drag a form block onto the page and create a new field.
  • Select the field and go to the settings panel on the right.
  • In the "Default value" field, give it a unique name or leave it empty.
  1. Add custom code to your page:
  • Select your page from the pages panel and click on the "Settings" tab.
  • Scroll down to the "Custom code" section and click on the "Open tag" button.
  • Add the following JavaScript code to access the cookie value and insert it into the hidden field:
<script>  document.addEventListener('DOMContentLoaded', function() {    var cookieValue = document.cookie.replace(/(?:(?:^|.*;\s*)yourCookieName\s*\=\s*([^;]*).*$)|^.*$/, "$1");    document.querySelector('input[name="yourFieldName"]').value = cookieValue;  });</script>
  1. Customize the code:
  • Replace 'yourCookieName' with the name of your first-party cookie. Make sure it matches the name of the cookie you want to access.
  • Replace 'yourFieldName' with the name of your hidden field. Make sure it matches the name you gave to the hidden field in step 1.

By following these steps, you should be able to insert the value of a first-party cookie into a hidden field in a Webflow form. This can be useful when you want to capture and pass specific information from the cookie to your form submissions.

Additional Questions

  1. How do I create a hidden field in a Webflow form?
  2. Can I access and manipulate cookies using JavaScript in Webflow?
  3. What are some other ways to pass data between a cookie and a form in Webflow?