initial commit

assignments/array-methods.js

@@ -57,26 +57,52 @@ 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 = [];
-console.log(fullNames);
+ let fullNames = [];
+
+    fullNames = runners.forEach(runners => {
+    console.log(runners.first_name,runners.last_name);
+ });
+
+// for(let i = 0; i < runners.length; i++){
+//   let mappedObj = {};
+//   mappedObj.first_name = runners[i].first_name;
+//   mappedObj.last_name = runners[i].last_name;
+//   fullNames.push(mappedObj);
+//   mappedObj = {};
+// }
 
 // ==== 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 = [];
+firstNamesAllCaps = runners.map((runners) => {
+  return{
+    'first': runners.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 = [];
+
+  runnersLargeSizeShirt = runners.filter((runners) => {
+  return runners.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;
+
+  ticketPriceTotal = runners.reduce((total,runners) =>{
+    return total + runners.donation;
+  }, 0);
+
 console.log(ticketPriceTotal);
 
 // ==== Challenge 5: Be Creative ====
-// Now that you have used .forEach(), .map(), .filter(), and .reduce().  I want you to think of potential problems you could solve given the data set and the 5k fun run theme.  Try to create and then solve 3 unique problems using one or many of the array methods listed above.
+// Now that you have used .foEach(), .map(), .filter(), and .reduce().  I want you to think of potential problems you could solve given the data set and the 5k fun run theme.  Try to create and then solve 3 unique problems using one or many of the array methods listed above.
 
 // Problem 1
 

assignments/callbacks.js

@@ -41,24 +41,48 @@ 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, function(length){
+  console.log(length);
+});
 
 function last(arr, cb) {
   // last passes the last item of the array into the callback.
+    return cb(arr[3]);
 }
+last(items, function(lastNumber){
+  console.log(lastNumber);
+});
 
 function sumNums(x, y, cb) {
   // sumNums adds two numbers (x, y) and passes the result to the callback.
+    return cb(x,y);
 }
+sumNums(4,5, function(x,y){
+    console.log(x + y);
+});
 
 function multiplyNums(x, y, cb) {
   // multiplyNums multiplies two numbers and passes the result to the callback.
+    return cb(x,y);
 }
+  multiplyNums(5,5, function(x,y){
+    console.log(x * y);
+  });
 
 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.
+   if(list.includes(item)){
+     return cb(1);
+   }else{
+     return cb(0);
+   }
 }
+contains('Gum', items, function(answer){
+  console.log(answer);
+})
 
 /* STRETCH PROBLEM */
 

assignments/closure.js

@@ -3,8 +3,20 @@
 // Keep it simple! Remember a closure is just a function
 // that manipulates variables defined in the outer scope.
 // The outer scope can be a parent function, or the top level of the script.
+let numbers = [23, 24, 45, 46];
 
-
+function question(answer){
+  //What number is you favorite number?
+  const myQuestion = 'What number is your favorite number?';
+
+  return myQuestion + " " + answer;
+  //return myQuestion + numbers[answer] //option for embedded function.
+}
+//console.log(question(3));
+function answer(i){
+    return numbers[i]
+}
+  console.log(question(answer(2)));
 /* STRETCH PROBLEMS, Do not attempt until you have completed all previous tasks for today's project files */
 
 
@@ -16,7 +28,27 @@ const counterMaker = () => {
   //      NOTE: This `counter` function, being nested inside `counterMaker`,
   //      "closes over" the `count` variable. It can "see" it in the parent scope!
   // 3- Return the `counter` function.
-};
+    let count = 0;
+    function counter(){
+     return count++; //increasing count
+     }
+     return counter();
+    };
+
+   const myCounter = counterMaker();
+
+   console.log(myCounter); // 1
+
+   console.log(myCounter); // 2
+
+   console.log(myCounter); // 3
+
+   console.log(myCounter); // 4
+   console.log(myCounter); // 5
+
+   console.log(myCounter); // 1
+
+ //console.log(counterMaker);
 // Example usage: const myCounter = counterMaker();
 // myCounter(); // 1
 // myCounter(); // 2