Can I get a HTML code for a Jotform created by someone else?

I have the link but no the code!

You can clone that form to your account and get the HTML code of the cloned form.

Use this guide to clone the form: Clone-an-Existing-Form-from-a-URL

Here is the guide to get the source code of the form: How-to-get-the-Full-Source-Code-of-your-Form

Let us know if you need any further assistance.