How can I autofill a Webflow membership site form email field with the logged in user's email?

TL;DR

To autofill a Webflow membership site form email field with the logged-in user's email, you'll need to utilize Webflow's MemberStack integration and some custom code.

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Here's a step-by-step guide on how to achieve this:

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1. Set up MemberStack:

   - Create a MemberStack account and integrate it into your Webflow project.

   - Define your membership levels and set up your registration and login forms.

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2. Add a custom code embed to your Webflow project:

   - Access the page where you have the membership form.

   - Drag and drop a custom code embed element onto the page, preferably near the email input field.

   - Open the custom code embed settings and select the "Before </body>" option for placement.

   - Add the following script within the custom code embed:

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```javascript

<script>

  MemberStack.onReady.then(function(member) {

    if (member.loggedIn) {

      document.getElementById("email-field").value = member.email;

    }

  });

</script>

```

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3. Modify the code based on your email field input ID:

   - Replace `"email-field"` in the code snippet with the actual ID of your email input field. This can be found by selecting the field and checking its settings in the Webflow Designer.

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4. Save and publish your changes:

   - Save your changes in the Webflow Designer.

   - Publish your Webflow project for the custom code to take effect.

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With this setup, the script will check if a user is logged in using MemberStack's `onReady` function. If the user is logged in, it will retrieve their email using `member.email` and populate the corresponding email input field with that value.

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Remember to test the functionality thoroughly on different devices and browsers to ensure it works as expected.

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