working on callbacks

assignments/array-methods.js

@@ -58,21 +58,30 @@ const runners = [
 // ==== Challenge 1: Use .forEach() ====
 // The event director needs both the first and last names of each runner for their running bibs. Combine both the first and last names and populate a new array called `fullNames`. This array will contain just strings.
 let fullNames = [];
+runners.forEach(function(currentValue){
+  return fullNames.push(`${currentValue.first_name} ${currentValue.last_name}`);
+});
 console.log(fullNames);
 
 // ==== Challenge 2: Use .map() ====
 // The event director needs to have all the runners' first names in uppercase because the director BECAME DRUNK WITH POWER. Populate an array called `firstNamesAllCaps`. This array will contain just strings.
-let firstNamesAllCaps = [];
+let firstNamesAllCaps = runners.map(function(currentValue){
+  return currentValue.first_name.toUpperCase();
+})
 console.log(firstNamesAllCaps);
 
 // ==== Challenge 3: Use .filter() ====
 // The large shirts won't be available for the event due to an ordering issue. We need a filtered version of the runners array, containing only those runners with large sized shirts so they can choose a different size. This will be an array of objects.
-let runnersLargeSizeShirt = [];
+let runnersLargeSizeShirt = runners.filter(function(currentValue){
+  return currentValue.shirt_size === "L" ;
+})
 console.log(runnersLargeSizeShirt);
 
 // ==== Challenge 4: Use .reduce() ====
 // The donations need to be tallied up and reported for tax purposes. Add up all the donations and save the total into a ticketPriceTotal variable.
-let ticketPriceTotal = 0;
+let ticketPriceTotal = runners.reduce(function(accumulator, currentValue){
+  return accumulator + currentValue.donation;
+}, 0);
 console.log(ticketPriceTotal);
 
 // ==== Challenge 5: Be Creative ====

assignments/callbacks.js

@@ -41,24 +41,43 @@ const items = ['Pencil', 'Notebook', 'yo-yo', 'Gum'];
 
 function getLength(arr, cb) {
   // getLength passes the length of the array into the callback.
+  return cb(arr.length);
 }
+  getLength(items, (length) => {
+    console.log(length);
+  });
 
 function last(arr, cb) {
   // last passes the last item of the array into the callback.
+  return cb(arr.slice(arr.length -1));
 }
+  last(items, (tail) => {
+    console.log(tail);
+  });
 
 function sumNums(x, y, cb) {
   // sumNums adds two numbers (x, y) and passes the result to the callback.
+  return cb(x,y);
 }
+const add = (x,y) =>{
+  return x + y;
+}
+console.log(sumNums(2, 9, add));
+
 
 function multiplyNums(x, y, cb) {
   // multiplyNums multiplies two numbers and passes the result to the callback.
+  return cb(x,y);
+}
+const product = (x,y) => {
+  return x * y;
 }
+console.log(multiplyNums(5, 8, product));
 
 function contains(item, list, cb) {
   // contains checks if an item is present inside of the given array/list.
   // Pass true to the callback if it is, otherwise pass false.
-}
+
 
 /* STRETCH PROBLEM */
 

assignments/closure.js

@@ -4,6 +4,22 @@
 // that manipulates variables defined in the outer scope.
 // The outer scope can be a parent function, or the top level of the script.
 
+function solarSystem(galaxy) {
+  console.log(`The ${galaxy} is where our planetary system is located.`);
+  debugger;
+  function planet(planetName) {
+    const continent = 'North America'
+    console.log(`We live on ${planetName} which is the third planet from the Sun.`);
+    debugger;
+    function country(countryName) {
+      console.log(`I live in the ${countryName} found in ${continent}.`);
+      debugger;
+    }//This closes country
+    country('United States');
+  }//this closes planet
+  planet('Earth');
+}//this closes solarsystem
+solarSystem('Milky Way');
 
 /* STRETCH PROBLEMS, Do not attempt until you have completed all previous tasks for today's project files */