The arguments object and parameters syntax

  • Especially useful when you don't know the number of arguments in a function
  • Or when destructing an object and you want the remaining properties in a separate object
  • Prefer rest parameters when writing ES6
  • One advantage of using syntax for function arguments is that the result will be an actual array, unlike arguments, which is an array-like object. The latter doesn't have built-in array methods like .map() and such.

for...of loop

  • to iterate over values in an iterable.
  • don't use (Note that it's for a different purpose and can cause unexpected problems, TODO demo these problems)

getters and setters

TODO code example

Use Object.entries() to get all values in an array.