Classwork: JavaScript Map/This/More Objects

Exercise 1:

1. Use .map to create a new array of objects where each object has a property for petnumber and pettype based on the elements in the array. Print the new array of objects.

let petTypes = ["dog", "cat", "pig", "hamster"];
let pet_objects = []; // new array to hold objects you produce

Exercise 2:

2. Use .filter to create an array of pet objects that only holds the hamsters.

let pets = [
{
  name: 'Spot',
  type: 'Hamster'
},
{
  name: 'Harry',
  type: 'Hamster'
},
{
  name: 'Kitty',
  type: 'Cat'
}
]

let hamsters = []; // new array to hold objects

Exercise 3:

Write a function that takes a string and returns total character count of letters for all strings in the sentence.

Use .reduce return this count. Hint: See .split() and string length property.

Exercise 4:

Use map to take an array of words in lower-case and returns an array of the strings where every other word is in all caps. Then use foreach to print out the new array.

ex: hey pal, lets javascript together sometime // => "HEY pal, LETS javascript TOGETHER sometime"