That said, Jon Duckett has a book which offers a very good introduction to its usage. https://javascriptbook.com/. Source: almost 2 years ago

Javascriptbook.com - you can preview the book here. You can also download all the code examples Jon uses in his JS book. People who say the book is outdated and such - the book is awesome because it does a great job of teaching JS. The code files include comments for almost every line of JS. People with no programming background will understand the purpose and reasoning behind every line. Source: almost 3 years ago

John Duckett's books are an excellent place to start. Http://javascriptbook.com/ He also has an HTML & CSS Book. (both available on Amazon). Source: almost 3 years ago

Marvelapp.com — Design, prototyping, and collaboration, free plan limited to one user and project. - Source: dev.to / 4 months ago

At this stage your main goal should be to prototype it and test it with people to validate the idea. Or at the very least have something people can look at and respond to. Don’t worry about building a coded and working version yet. Start with a clickable prototype which can be built using design tools. Most people use Figma these days but if you’re just starting out you could use something like Marvel, which is... Source: about 1 year ago

Marvelapp.com — Design, prototyping and collaboration, free plan limited to one user and one project. - Source: dev.to / over 1 year ago

Hi, I am doing research on some of the user testing tools out there like lookback.io, Marvelapp.com, maze.design, usabilityhub.com, userbrain.net, usertesting.com, userzoom.com. I would like to know about your experience. Source: over 1 year ago

As far as I can remember, I saw https://marvelapp.com/ doing it to add a prototype to the homescreen. Source: about 2 years ago