Static Forms
The Static Forms Pages Plugin intercepts all form submissions made which have the data-static-form-name attribute set. This allows you to take action on these form submissions by, for example, saving the submission to KV.
npm install @cloudflare/pages-plugin-static-formsimport staticFormsPlugin from "@cloudflare/pages-plugin-static-forms";
export const onRequest: PagesFunction = staticFormsPlugin({  respondWith: ({ formData, name }) => {    const email = formData.get("email");    return new Response(      `Hello, ${email}! Thank you for submitting the ${name} form.`,    );  },});<body>  <h1>Sales enquiry</h1>  <form data-static-form-name="sales">    <label>Email address <input type="email" name="email" /></label>    <label>Message <textarea name="message"></textarea></label>    <button type="submit">Submit</button>  </form></body>The Plugin takes a single argument, an object with a respondWith property. This function takes an object with a formData property (the FormData ↗ instance) and name property (the name value of your data-static-form-name attribute). It should return a Response or Promise of a Response. It is in this respondWith function that you can take action such as serializing the formData and saving it to a KV namespace.
The method and action attributes of the HTML form do not need to be set. The Plugin will automatically override them to allow it to intercept the submission.