Challenge Done

.vscode/settings.json

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+{
+    "liveServer.settings.port": 5501
+}

Bunmi.js

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+/*this challenge should you choose to accept it:
+attempt at least 2 out of 3*/
+
+//use this log where ncessary and when you want to log something:
+const { log } = console;
+
+
+//use this html to test your code in the browser:
+const sumOfNumber = document.querySelector(".sum-of-no");
+const lengthOfArr = document.querySelector(".len-of-arr");
+const totalItemsOfArr = document.querySelector(".len-of-arr");
+const NumOfChoice = document.querySelector(".num-of-choice");
+const firstAndLastName = document.querySelector(".first-and-last-name");
+const fiveLetterLong = document.querySelector(".five-letters-long");
+const countryWithAatTheEnd = document.querySelector(".country-with-a-at-end");
+const countryStartingWithN = document.querySelector(
+  ".country-with-starting-with-n"
+);
+const countryWithAInMiddle = document.querySelector(
+  ".country-with-a-in-middle"
+);
+const nameAtTheEnd = document.querySelector(".array-of-names-with-my-name-at-the-end");
+const loopOfArray1 = document.querySelector(".loop-through-an-array-1");
+const loopOfArray2 = document.querySelector(".loop-through-an-array-2");
+const loopOfArray3 = document.querySelector(".loop-through-an-array-3");
+const objectOfAge = document.querySelector(".object-with-particular-age");
+const objectOfName = document.querySelector(".object-with-particular-name");
+
+/*--==============================-----------------------=======================-----------------------=======================*/
+
+//hint: to insert your result in the html, use the textContent property of the element you want to insert the result in.
+//e.g: sumOfNumber.textContent = yourResult;
+
+//array 1
+const arrOfNum = [1, 2, 3, 4, 5, 6, 7, 8, 9, 10];
+
+//1. Write a function that takes an array of numbers and returns the sum of all the numbers.
+
+              function addArray(arrOfNum){
+                    let sum = 0;
+                    for(let x = 0;
+                      x < arrOfNum.length;
+                      x ++){
+
+                        sum += arrOfNum[x]
+                      }
+                      return sum;
+                  }
+                sumOfNumber.textContent =  addArray([1, 2, 3, 4, 5, 6, 7, 8, 9, 10])
+
+
+//2. Write a function that takes an array of numbers and return the total items in the array.
+
+              function howMany(arrOfNum){
+                const total = arrOfNum.length
+                    return total
+              }
+              lengthOfArr.textContent = howMany([1, 2, 3, 4, 5, 6, 7, 8, 9, 10])
+
+//3. write a function that takes an array of numbers and returns a number you want from the array.
+
+              function getNumber(arrOfNum){
+                  const want = arrOfNum[4]
+                  return want
+              }
+              NumOfChoice.textContent = getNumber([1, 2, 3, 4, 5, 6, 7, 8, 9, 10])
+/*--==============================-----------------------=======================-----------------------=======================*/
+
+//array 2
+const arrOfName = ["Peter", "Paul", "Mary", "John", "Jane"];
+
+//1. Write a function that takes an array of names and returns the first name and last name.
+
+              function getName(arrOfName){
+                var first = arrOfName[0]
+                var last =  arrOfName[arrOfName.length -1]
+
+                return  'The first name is' + " " + first + " " + 'while the last name is' + " " + last 
+              }
+              firstAndLastName.textContent = getName(["Peter", "Paul", "Mary", "John", "Jane"])
+
+
+
+//2. write a function that takes an array of names and return the name that is 5 letters long.
+
+              function fiveLetters(arrOfName){
+              for (let i in arrOfName){
+                if (i.length = 5){
+                  let x = arrOfName[i]
+                  return x
+                }
+               }
+                }
+              fiveLetterLong.textContent = fiveLetters(["Peter", "Paul", "Mary", "John", "Jane"])
+
+
+//3. write a function that takes an array of names and returns (your name) at the end of the array.
+
+              function myName(arrOfName){
+
+               arrOfName[arrOfName.length] = "Bunmi"
+               return arrOfName
+              }
+
+             let arrname = myName(["Peter", "Paul", "Mary", "John", "Jane"])
+             console.log(arrname)
+
+/*--==============================-----------------------=======================-----------------------=======================*/
+
+//array 3
+const arrOfCountry = ["USA", "UK", "Germany", "France", "Nigeria"];
+
+//1. Write a function that takes an array of countries and returns the country that starts with the letter 'N'.
+
+                function start(arrOfCountry){
+                for (let i in arrOfCountry){
+                  if (arrOfCountry[i].startsWith("N")){
+                    return arrOfCountry[i]
+                  }
+                }
+                }
+              countryStartingWithN.textContent =  start(["USA", "UK", "Germany", "France", "Nigeria"])
+
+
+//2. Write a function that takes an array of countries and returns the country that ends with the letter 'A'.
+              function ends(arrOfCountry){
+                  for(let i in arrOfCountry){
+                    if(arrOfCountry[i].endsWith("A")){
+                      return arrOfCountry[i]
+                    }
+                  }
+              }
+              countryWithAatTheEnd.textContent = ends(["USA", "UK", "Germany", "France", "Nigeria"])
+
+
+//3. Write a function that takes an array of countries and returns the country that has the letter 'a' in the middle.
+
+/*--==============================-----------------------=======================-----------------------=======================*/
+
+//array 4
+const arrOfObject = [
+  { name: "Peter", age: 30, country: "USA" },
+  { name: "Paul", age: 25, country: "UK" },
+  { name: "Mary", age: 28, country: "Germany" },
+  { name: "John", age: 35, country: "France" },
+  { name: "Jane", age: 28, country: "Nigeria" },
+];
+
+//1 write a function that takes an array of objects then loop through the array in 3 types of looping an array of objects.
+                    // FOR LOOP
+       function forLoop(arrOfObject){
+        for(x in arrOfObject){
+          return arrOfObject
+        }
+       }
+       let looparray = forLoop( [{ name: "Peter", age: 30, country: "USA" },
+       { name: "Paul", age: 25, country: "UK" },
+       { name: "Mary", age: 28, country: "Germany" },
+       { name: "John", age: 35, country: "France" },
+       { name: "Jane", age: 28, country: "Nigeria" },
+     ]) 
+        console.log(looparray)            
+
+
+          //FOR IN LOOP
+        function forinloop(arrOfObject){
+          for(y in arrOfObject){
+            return arrOfObject[y].age
+          }
+        } 
+      let  loopArray2 = forinloop( [{ name: "Peter", age: 30, country: "USA" },
+        { name: "Paul", age: 25, country: "UK" },
+        { name: "Mary", age: 28, country: "Germany" },
+        { name: "John", age: 35, country: "France" },
+        { name: "Jane", age: 28, country: "Nigeria" },
+      ])
+        console.log(loopArray2)
+
+      // WHILE LOOP
+      function whileloop(arrOfObject){
+        x = 1;
+        while(x <= 10){
+          x = x+2; return arrOfObject 
+        }
+      }
+      let looparray3 =  whileloop( [{ name: "Peter", age: 30, country: "USA" },
+      { name: "Paul", age: 25, country: "UK" },
+      { name: "Mary", age: 28, country: "Germany" },
+      { name: "John", age: 35, country: "France" },
+      { name: "Jane", age: 28, country: "Nigeria" },
+    ])
+      console.log(looparray3)
+
+//this 3 methods must be in 3 different functions.
+
+//2 write a function that takes an array of objects and returns the object that has age that is greater than 20 and less than 30.
+            function age(arrOfObject){
+
+            for(x in arrOfObject){
+            if((arrOfObject[x].age > 20) && (arrOfObject[x].age < 30)){
+             console.log(arrOfObject[x])
+              }
+             } 
+            }
+          age ([{ name: "Peter", age: 30, country: "USA" },
+            { name: "Paul", age: 25, country: "UK" },
+            { name: "Mary", age: 28, country: "Germany" },
+            { name: "John", age: 35, country: "France" },
+            { name: "Jane", age: 28, country: "Nigeria" },])
+
+
+//3 write a function that takes an array of objects and returns the object that has name that is 'John'.
+             function arrName(arrOfObject){
+                for(let i in arrOfObject){
+                  if (arrOfObject[i].name == "John"){
+                    return arrOfObject[i]
+                  }
+                }
+                }
+            let objectname = arrName([
+              { name: "Peter", age: 30, country: "USA" },
+              { name: "Paul", age: 25, country: "UK" },
+              { name: "Mary", age: 28, country: "Germany" },
+              { name: "John", age: 35, country: "France" },
+              { name: "Jane", age: 28, country: "Nigeria" },
+            ])
+            console.log(objectname)

index.html

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         </div>
       </div>
     </div>
+
   </body>
 </html>