Docusaurus lead capture form

// ContactForm.tsx — React (works in Vite, CRA, Next 'use client')
"use client";
import { useState } from "react";

export function ContactForm() {
  const [status, setStatus] = useState<"idle" | "ok" | "error">("idle");

  async function onSubmit(e: React.FormEvent<HTMLFormElement>) {
    e.preventDefault();
    const form = e.currentTarget;
    const res = await fetch("https://formloom.vercel.app/api/submit/YOUR_ACCESS_KEY", {
      method: "POST",
      headers: { "Content-Type": "application/json", Accept: "application/json" },
      body: JSON.stringify(Object.fromEntries(new FormData(form))),
    });
    setStatus((await res.json()).success ? "ok" : "error");
    if (status !== "error") form.reset();
  }

  if (status === "ok") return <p>Thanks — we got your message.</p>;
  return (
    <form onSubmit={onSubmit}>
      <label>
        Name
        <input type="text" name="name" required />
      </label>
      <label>
        Work email
        <input type="email" name="email" required />
      </label>
      <label>
        Company
        <input type="text" name="company" />
      </label>
      <label>
        Budget
        <select name="budget">
          <option value="< $1k">< $1k</option>
          <option value="$1k–$10k">$1k–$10k</option>
          <option value="$10k–$50k">$10k–$50k</option>
          <option value="$50k+">$50k+</option>
        </select>
      </label>
      <label>
        What do you need?
        <textarea name="message"></textarea>
      </label>
      <!-- honeypot: bots fill this, humans don't see it -->
      <input type="checkbox" name="botcheck" style="display:none" tabindex="-1" autocomplete="off" />
      <button type="submit">Send</button>
    </form>
  );
}

// npm i @formloom/client
import { createForm } from "@formloom/client";

type Contact = {
  name: string;
  email: string;
  company?: string;
  budget?: string;
  message?: string;
};

const form = createForm<Contact>("YOUR_ACCESS_KEY");

// End-to-end typed: TS errors if you send the wrong shape.
const { success, message } = await form.submit({
  name: form.name.value,
  email: form.email.value,
  company: form.company.value,
  budget: form.budget.value,
  message: form.message.value,
});

<form id="contact-form">
  <label>
    Name
    <input type="text" name="name" required />
  </label>
  <label>
    Work email
    <input type="email" name="email" required />
  </label>
  <label>
    Company
    <input type="text" name="company" />
  </label>
  <label>
    Budget
    <select name="budget">
      <option value="< $1k">< $1k</option>
      <option value="$1k–$10k">$1k–$10k</option>
      <option value="$10k–$50k">$10k–$50k</option>
      <option value="$50k+">$50k+</option>
    </select>
  </label>
  <label>
    What do you need?
    <textarea name="message"></textarea>
  </label>
  <!-- honeypot: bots fill this, humans don't see it -->
  <input type="checkbox" name="botcheck" style="display:none" tabindex="-1" autocomplete="off" />
  <button type="submit">Send</button>
</form>

<script>
const form = document.getElementById("contact-form");
form.addEventListener("submit", async (e) => {
  e.preventDefault();
  const res = await fetch("https://formloom.vercel.app/api/submit/YOUR_ACCESS_KEY", {
    method: "POST",
    headers: { "Content-Type": "application/json", Accept: "application/json" },
    body: JSON.stringify(Object.fromEntries(new FormData(form))),
  });
  const data = await res.json();
  if (data.success) {
    form.reset();
    alert("Thanks — we got your message.");
  } else {
    alert(data.message || "Something went wrong.");
  }
});
</script>