Puppeteer submit form: How to Automate Form Filings and Submissions

For anyone wrestling with web data, Puppeteer submit form automation is less a ‘nice-to-have’ and more a ‘when-not-if’ skill. Forms sit between you and a lot of the web: login walls, search boxes, signup flows, checkouts. If you scrape, test, or automate anything in a browser long enough, you’ll inevitably find yourself filling and submitting them programmatically.