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1. Add the HTML Form

Ensure your HTML form includes the surface-form-handler class. This class is essential for identifying the form as one that triggers the Surface Form popup. Example: 
<form class="surface-form-handler">
  <input type="email" placeholder="Enter your email" required />
  <button type="submit">Submit</button>
</form>
Add the surface-form-handler class to any external form that you want to use to trigger the Surface Form popup.

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2. Surface Form Constructor

Go to the public/index.html file in your React.js project and add the following code at the end of <body> tag: Add the data-question-id attribute to your Surface form script.
You must replace the <question_id> within data-question-id attribute below with the question ID from the Surface Form Builder.
Question ID Location
<!-- Start Surface Form Embed -->

<script data-question-id="<question_id>">
   window.onload = function () {
     const surface_src = "surface_form_url";
     const surface_embed_type = "slideover"; // works on all embedding types!
     const target_element_class = "surface-form-button";
     const c = new SurfaceEmbed(
       surface_src,
       surface_embed_type,
       target_element_class,
     );
   };
</script>

<!-- End Surface Form Embed -->