week7 JavaScript Homework

answers.js

@@ -0,0 +1,73 @@
+//1. Create a function that takes 3 arguments and returns the sum of the these arguments.
+
+function addition(n1, n2, n3) {
+  console.log(n1 + n2 + n3);
+}
+
+addition(1,2,3)
+
+
+//2. Create a function named colorCar that receives a color, and prints out, 'a red car' for example.
+
+function colorCar(color) {
+  console.log(`a ${color} car`);
+}
+
+colorCar("black");
+
+
+//3. Create an object and a function that takes the object as a parameter and prints out all of its properties and values.
+
+function printOpject(object) {
+  for (let key in object) {
+    console.log(`${key} : ${object[key]}`);
+  }
+}
+
+let myObject = {
+  name : "Hack Your Future",
+  age  : 2,
+  teach : [
+            "JavaScript", "HTML", "CSS", "NodeJS", "react", "MySQL"
+          ],
+  location: "Toronto",
+  cost : "free"
+};
+
+printOpject(myObject);
+
+//4. Create a function named vehicleType that receives a color, and a code, 1 for car, 2 for motorbike. And prints 'a blue motorbike' for example when called as vehicleType("blue", 2)
+
+function vehicleType(color, code) {
+  console.log(`a ${color} ${(code ===2)? "motorbike":"car"}`);
+}
+
+vehicleType("blue", 2);
+
+//5. Can you write the following without the if statement, but with just as a single line with console.log(...);?
+// if (3 === 3) {
+//   console.log("yes");
+// } else {
+//   console.log("no");
+// }
+console.log(3===3);
+
+//6. Create a function called vehicle, like before, but takes another parameter called age, so that vehicle("blue", 1, 5) prints 'a blue used car'
+
+function vehicle(color, code, age) {
+  console.log(`a ${color} ${(age > 1)? "used":"new"} ${(code ===2)? "motorbike":"car"}`);
+}
+vehicle("blue", 1, 5);
+
+//7. Make a list of vehicles, you can add "motorbike", "caravan", "bike", or more
+let vList = ["motorbike", "caravan", "bike", "bus", "car"];
+
+//8. How do you get the third element from that list?
+console.log(vList[2]);
+
+//9. Change the function vehicle to use the list of question 7. So that vehicle("green", 3, 1) prints "a green new bike".
+
+function vehicleV2(color, code, age) {
+  console.log(`a ${color} ${(age > 1)? "used":"new"} ${vList[code-1]}`);
+}
+vehicleV2("green", 2, 1);

ex.js

@@ -1,6 +1,16 @@
 // TODO: define addFavoriteBook(..) function
 
+function addFavoriteBook(bookName){
+  (!bookName.includes("Great"))? favoriteBooks.push(bookName): false;
+}
+
 // TODO: define printFavoriteBooks() function
+function printFavoriteBooks() {
+  console.log(`Favorite Books: ${favoriteBooks.length}`);
+  for (let book of favoriteBooks) {
+    console.log(book);
+  }
+}
 
 const favoriteBooks = [];
 
@@ -11,3 +21,4 @@ addFavoriteBook("Great Expectations");
 addFavoriteBook("You Don't Know JS");
 
 // TODO: print out favorite books
+printFavoriteBooks();