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Introduction to JavaScript

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Challenge: Perform Array Operations

Task

  1. Create an array named myArray with the given data: ["Heine", 25, "Bob", 16] .

  2. Remove the last element, 16 , from the array.

  3. Add a new element with the value 21 to the end of the array.

  4. Replace the second element with the value 27 using indexing .

  5. Print the updated array to the console.

let ___ = ["Heine", 25, "Bob", 16];
myArray.___();
myArray.___(21);
myArray[___] = 27;
console.log(___);

              
12345

            
let ___ = ["Heine", 25, "Bob", 16];
myArray.___();
myArray.___(21);
myArray[___] = 27;
console.log(___);
copy

The output should be :

python
Heine,27,Bob,21

  1. Use the pop() method to remove an element from the end of an array.

  2. Use the push() method to add an element to the end of an array.

  3. Access the second element in the array using the index 1 .

  4. To log the array data to the console, use the console.log() with the array name.

let myArray = ["Heine", 25, "Bob", 16]; // Step 1
myArray.pop(); // Step 2
myArray.push(21); // Step 3
myArray[1] = 27; // Step 4
console.log(myArray); // Step 5

              
12345

            
let myArray = ["Heine", 25, "Bob", 16]; // Step 1
myArray.pop();         // Step 2
myArray.push(21);      // Step 3
myArray[1] = 27;       // Step 4
console.log(myArray);  // Step 5
copy

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