Extract Form Submission Details for a Cloudflare Worker.

get-form-data.js

async function getFormData(request) {
const { headers } = request;
	const contentType = headers.get("content-type") || "";

	if (contentType.includes("application/json")) {
		return await request.json();
	}

	if (contentType.includes("form")) {
		const formData = await request.formData();
		const body = {};
		for (const entry of formData.entries()) {
			body[entry[0]] = entry[1];
		}

		return body;
	}

	return null;
}

This supports the form being submitted the old fashion way by the browser or being handled by JavaScript and submitted as JSON.

In each case, the data is returned to the caller in JSON format.