# Netlify Functions: Custom Forms, Dynamic Content, and API Integrations in Webflow

Netlify Functions unlock powerful possibilities for your Webflow websites, extending beyond the visual designer's limitations. Here's a glimpse into what you can achieve with short and clean code examples:

**1. Custom Forms & Data Handling:**

- Build custom forms that send data to your serverless Netlify Function.
- In your function, use libraries like Formik or Formspree to handle form submissions.
- Validate user input, send emails, or store data using APIs (e.g., Airtable, Google Sheets).

**Example:**

```
JavaScript
const submitForm = async (event) => {
  event.preventDefault();
  const formData = new FormData(event.target);
  const response = await fetch('/api/submit-form', {
    method: 'POST',
    body: formData,
  });
  if (response.ok) {
    // Show success message or redirect
  } else {
    // Handle errors
  }
};

document.getElementById('contact-form').addEventListener('submit', submitForm);
```

**2. Dynamic Content with Server-Side Rendering:**
- Fetch data from APIs or databases in your Netlify Function.
- Inject the retrieved data into your Webflow templates using the Webflow API.
- Update content dynamically based on user interactions or page loads.

**Example:**
```
JavaScript
const getBlogPosts = async () => {
  const response = await fetch('/api/blog-posts');
  const posts = await response.json();
  return posts;
};

getBlogPosts().then((posts) => {
  // Loop through posts and update Webflow elements with their content
});
```
**3. API Integrations for Enhanced Functionality:**
- Connect your Webflow site to third-party APIs using your Netlify Function.
- Integrate authentication, payment gateways, social media platforms, etc.
- Extend your website's capabilities beyond what Webflow offers natively.

**Example:**
```
JavaScript
const stripePayment = async ({ amount, description }) => {
  const response = await fetch('/api/stripe-payment', {
    method: 'POST',
    body: JSON.stringify({ amount, description }),
  });
  const data = await response.json();
  return data;
};

document.getElementById('pay-button').addEventListener('click', () => {
  stripePayment({ amount: 1000, description: 'Product purchase' })
    .then((data) => {
      // Use Stripe data to complete payment
    })
    .catch((error) => {
      // Handle errors
    });
});
```
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