Technical requirements
There are no technical requirements except a browser to run the examples of this chapter. Just go to https://jsfiddle.com/ or https://codesandbox.io/ and type and run your code.
To access the code for this chapter, follow this link to the book’s GitHub repository:
This chapter is not a complete tutorial. If you are not familiar with the JavaScript basics, please have a look at https://javascript.info, which is the JavaScript tutorial I would recommend to start.