This is just a basic example on how to go about CORS headers if you want to submit a web form from local file or localhost (127.0.0.1) to Cloudflare Worked in dev mode.
Prerequisite.
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You need to have Cloudflare Wrangler2 installed, https://github.com/cloudflare/wrangler2.
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(Optional) You need to have NodeJS installed.
You can invoke this webpage on localhost or from a local file. It will work both ways!!
- Run wragnler worker from the package root folder, wrangler dev; Must be running at http://127.0.0.1:8787 (if it is not, make appropriate changes in the html code of submit_form.html)
- Open submit_form.html in browser from the src/webpage folder
- Submit form and Enjoy!
- Install simple NodeJS web-server from here https://www.npmjs.com/package/http-server.
Namely,
npm install http-server. - Run webserver from the src/webpage folder,
npx http-server . - Run wragnler worker from the package root folder,
wrangler dev; Must be running at http://127.0.0.1:8787 (if it is not, make appropriate changes in the html code of submit_form.html) - Open in browser, http://127.0.0.1:8080/submit_form.html or whatever your local ip and port are.
- Submit form and Enjoy!
Ping me if there is any problem with the code. Hopefully I'll have time to help :)
Thanks to PierBover here, cloudflare/wrangler-legacy#1262