completed array methods and callbacks

index.js

@@ -5,15 +5,25 @@ const { fifaData } = require('./fifa.js')
 /* 🚀🚀🚀🚀🚀🚀🚀🚀🚀🚀 Task 1: 🚀🚀🚀🚀🚀🚀🚀🚀🚀🚀
 Practice accessing data by console.log-ing the following pieces of data note, you may want to filter the data first 😉*/
 
+let finals2014 = fifaData.filter(
+    (match) => {
+    return match.Year === 2014 && match.Stage === 'Final'
+})
+
 //(a) Home Team name for 2014 world cup final
+console.log(finals2014[0]['Home Team Name'])
 
 //(b) Away Team name for 2014 world cup final
+console.log(finals2014[0]['Away Team Name'])
 
 //(c) Home Team goals for 2014 world cup final
+console.log(finals2014[0]['Home Team Goals'])
 
 //(d) Away Team goals for 2014 world cup final
+console.log(finals2014[0]['Away Team Goals'])
 
 //(e) Winner of 2014 world cup final */
+console.log(finals2014[0]['Win conditions'])
 
 
 /* 🚀🚀🚀🚀🚀🚀🚀🚀🚀🚀 Task 2: 🚀🚀🚀🚀🚀🚀🚀🚀🚀🚀 
@@ -24,10 +34,19 @@ Use getFinals to do the following:
 hint - you should be looking at the stage key inside of the objects
 */
 
-function getFinals(/* code here */) {
-   /* code here */
+function getFinals(data) {
+// let finalData = []
+//    for (let i = 0; i < data.length; i++){
+//        if (data[i].Stage === 'Final'){
+//         finalData.push(data[i])
+//        }
+//    } return finalData
+    const finalData = data.filter(
+        (match) => { return match.Stage === 'Final'
+    }); return finalData
 }
 
+// console.log(getFinals(fifaData))
 
 
 /* 🚀🚀🚀🚀🚀🚀🚀🚀🚀🚀 Task 3: 🚀🚀🚀🚀🚀🚀🚀🚀🚀🚀
@@ -36,8 +55,11 @@ Use the higher-order function called getYears to do the following:
 2. Receive a callback function getFinals from task 2 
 3. Return an array called years containing all of the years in the getFinals data set*/
 
-function getYears(/* code here */) {
-    /* code here */
+function getYears(array, getFinalsCB) {
+    let years = getFinalsCB(array).map(
+        (match) =>{
+        return match.Year
+    }); return years
 }
 
 
@@ -49,8 +71,11 @@ Use the higher-order function getWinners to do the following:
 3. Determines the winner (home or away) of each `finals` game. 
 4. Returns the names of all winning countries in an array called `winners` */ 
 
-function getWinners(/* code here */) {
-    /* code here */
+function getWinners(array, getFinalsCB) {
+    let winners = getFinalsCB(array).map(
+        (match) => {return match['Home Team Goals'] > match['Away Team Goals'] ? 
+        match['Home Team Name'] : match['Away Team Name']
+    }); return winners 
 }
 
 
@@ -66,12 +91,13 @@ Use the higher-order function getWinnersByYear to do the following:
 hint: the strings returned need to exactly match the string in step 4.
  */
 
-function getWinnersByYear(/* code here */) {
-    /* code here */
+function getWinnersByYear(array, getFinalsCB, getYearsCB, getWinnersCB) {
+    let wonWorldCup = []
+    for (let i =0; i < getFinalsCB(array).length; i++){
+        wonWorldCup.push(`In ${getYearsCB(array)[i]}, ${getWinnersCB(array)[i]} won the world cup!`)}
+    return wonWorldCup
 }
 
-
-
 /* 🚀🚀🚀🚀🚀🚀🚀🚀🚀🚀 Task 6: 🚀🚀🚀🚀🚀🚀🚀🚀🚀🚀
 Use the higher order function getAverageGoals to do the following: 
  1. Receive the callback function getFinals from task 2 ensure you pass in the data as an argument
@@ -82,13 +108,18 @@ Use the higher order function getAverageGoals to do the following:
  Example of invocation: getAverageGoals(getFinals(fifaData));
 */
 
-function getAverageGoals(/* code here */) {
-   /* code here */
+function getAverageGoals(array) {
+  let averageGoals = array.reduce(
+      (accumulator, goals) => {
+          let sum = accumulator + goals['Home Team Goals'] + goals['Away Team Goals']
+          return sum
+      }
+  ,0);
+  let average = (averageGoals / array.length).toFixed(2)
+  return average
 }
 
 
-
-
 /// 🥅 STRETCH 🥅 ///
 
 /* 💪💪💪💪💪 Stretch 1: 💪💪💪💪💪