initial commit

main.js

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+// 1) .length
+// Create an array called cars which consists of 4 different types of cars as String type. The first car type should be Ford.
+// Console.log the length of the array.
+
+const cars = ['Ford', 'BMW', 'GMC', 'Tesla']
+console.log('The number of cars: ',cars.length);  
+
+
+
+//*****
+// 2) .concat()
+// Create another array called moreCars with 4 more different types of cars. The last car type should be Honda.
+// Use the concat method to combine the cars and moreCars arrays into another array called totalCars.
+// Console.log the new array.
+
+const moreCars=['Kia','Volvo','Nissan','Honda']
+let totalCars = cars.concat(moreCars)
+console.log(`Total Cars: ${totalCars.length}`)
+
+
+
+//*****
+// 3).indexOf() and .lastIndexOf()
+// Use the indexOf method to console.log the index of Honda in totalCars.
+// Use the lastIndexOf method to console.log the index of Ford in totalCars.
+// Run the program.
+console.log('Index position of Honda in totalCars: ', totalCars.indexOf('Honda'))
+console.log('The index position of Ford in totalCars: ', totalCars.lastIndexOf('Ford'))
+
+
+
+//*****
+// 4).join()
+// Use the join method to convert the array totalCars into a string called stringOfCars.
+// Console.log stringOfCars.
+// Run the program.
+let stringOfCars = totalCars.join(', ')
+    console.log('String of Cars: ', stringOfCars)
+
+
+
+//*****
+// 5) .split()
+// Use the split method to convert stringOfCars into an array called carsFromString.
+// Console.log the array you just created.
+// Run the program.
+// BONUS: Go back and pass a comma (',') in as an argument to .split() to separate the cars into individual items in the array. This is called a separator and it can be any character you wish to separate strings by.
+let carsFromStrings = stringOfCars.split(",")
+    console.log('Split the String of Cars: ', totalCars)
+
+
+
+//*****
+// 6) .reverse()
+// Use the reverse method to create an array carsInReverse which is the array totalCars in reverse.
+// Console.log carsInReverse.
+// Run the program.
+
+carsInReverse = totalCars.reverse()
+console.log('Cars in Reverse: ', carsInReverse)
+
+
+
+//*****
+// 7) .sort()
+// Use the sort method to put the array carsInReverse into alphabetical order.
+// Based on the types of cars you used, predict which item in the array should be at index 0.
+// Use the following code to confirm or reject your prediction: console.log(carsInReverse.indexOf('yourPrediction'));
+carsInReverse.sort();
+console.log('Alpha Order, Predicted position of BMW: ', carsInReverse.indexOf('BMW'));
+
+
+//*****
+// 8).slice()
+// Create a pets array by copy/pasting the following: const pets = ['dog', 'cat', 'fish', 'rabbit', 'snake', 'lizard', 'bird']
+// Use the slice method to create a reptiles array with snake and lizard from the pets array.
+// Console.log the reptiles array and run the program.
+// Now console.log the pets array and run the program. Why do you think snake and lizard are still in the original array?
+const pets = ['dog', 'cat', 'fish', 'rabbit', 'snake', 'lizard', 'bird']
+const reptiles = pets.slice(4, 6)
+console.log('List of reptiles: ',reptiles)
+console.log('List of pets: ', pets)
+
+
+//*****
+// 9) .splice()
+// Create a new array called removedReptiles, using the splice method to remove snake and lizard from the pets array.
+// Console.log removedReptiles and pets and run the program.
+// Go back and add the string 'hamster' in as a third parameter to your splice method, then run the program again and notice how the pets array has changed. Do you see how that works?
+let removedReptiles = pets.splice(4, 2)
+console.log('.splice to remove reptiles: ',removedReptiles)
+
+pets.splice(3, 0, "hamster");
+console.log('Added hamster: ',pets)
+
+
+
+//*****
+// 10) .pop()
+// Use the pop method to remove the last item from the pets array, saving it to a variable called removedPet.
+// Console.log removedPet and pets and run the program.
+let removedPets = console.log('Last item: ',pets.pop());
+console.log('.pop method to remove last item from list: ',pets)
+
+
+
+//*****
+// 11) .push()
+// Use the push method to add removedPet back to the end of the pets array.
+// Console.log pets and run the program.
+pets.push('bird')
+console.log('.push method to replace the removed iten: ',pets)
+
+
+
+//*****
+// 12) .shift()
+// Use the shift method to remove and console.log the first item in the pets array.
+let firstElement = pets.shift();
+console.log('.shift method to remove first item: ',firstElement)
+
+
+
+//*****
+// 13) .unshift()
+// Use the unshift method to add the string 'turtle' as the first item in the pets array.
+// Console.log the pets array and run the program. If all went according to plan, you should see ['turtle', 'cat', 'fish', 'rabbit', 'hamster', 'bird'].
+pets.unshift('turtle')
+console.log('.unshift method, to add turtle: ',pets)
+
+//*****
+// 14) .forEach()
+// Create a numbers array by copy/pasting the following: const numbers = [23, 45, 0 , 2, 8, 44, 100, 1, 3, 91, 34]
+// Write code that will add 2 to each item in the array numbers.
+// forEach requires a function to be passed into it as its first argument.
+// Build a function called addTwo that can take in num, index, and arr as parameters—(num, index, arr)—and returns num + 2 at each index of the arr.
+const numbers = [23, 45, 0, 2, 8, 44, 100, 1, 3, 91, 34]
+console.log('Numbers in the array: ',numbers)
+function addTwo(num, index, arr) {
+    arr[index] = num + 2;
+
+}
+
+// Use .forEach() on the numbers array, passing in your freshly built function addTwo as an argument, in order to add 2 to each number in the array.
+// Console.log numbers and run the program.
+numbers.forEach(addTwo)
+console.log('.forEach method to add 2 to each# in the array: ', numbers)