It is a versatile language that can be used to create everything from simple scripts to complex web applications.
To start working with functions, you should learn how to create a basic function and understand how to use parameters and return values.
You should also learn about the different types of functions, including function expressions and arrow functions.
To work with arrays and objects, you should learn how to create and access elements, and understand how to use built-in methods such as push() and pop() for arrays, and dot notation and bracket notation for objects.
You should also learn about the different types of loops and iteration methods, such as forEach, map, filter and reduce, that can be used to work with arrays and objects.
You should also learn about the different types of web APIs that are available, including REST and GraphQL.