Quiz

1. I would love to go over arrays-- that tripped me up both in the readings and in the assignment!

   I'd be happy to. Arrays are a sequence of values, indexed by their location in the array.

   
       let kids = ["Ross", "Charlotte"];
       console.log("First kid is ", kids[0]);
       let bigKids = kids.map((k) => k.toUpperCase());
       bigKids.forEach((kid, index) => { console.log(index, ": ", kid) });
   
   

2. I am still a bit confused about the difference between forEach and map / I'm confused about the forEach method. How is it different from a loop?

   Great question. For map:

   • map takes a function of one argument
   • map invokes that function on every array element
   • map collects all the return values from that function
   • map returns a new array with all the return values

   While forEach:

   • forEach takes a function of one, two or three arguments.
   • forEach invokes that function on every array element, its index, and the array
   • forEach returns no value

   Yeah, forEach takes the place of a loop. The difference is that is a method rather than a syntactic construct.