Netlify build does not detect form triggered post build

[hrishikesh]

This is answered here: [Support Guide] Form problems, form debugging, 404 when submitting - Support / Support Guides - Netlify Support Forums, specifically:

@Dennis

You still need to include an HTML form that meets the criteria above, including all the inputs with the same names as the JavaScript form. This is required because we parse HTML to find forms during your deploy - but we don’t try to parse javascript files. This means if you are using any framework which create HTML elements using JavaScript during the render, you’ll still need to include an actual HTML file that includes all of the form details in it, including all possible inputs that you want to use. For a working example using React that you can generalize to other frameworks from, check out this blog post .