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Introduction to JavaScript

bookChallenge: 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.

              
12345

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

The output should be :

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.

              
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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Como podemos melhorá-lo?

Obrigado pelo seu feedback!

Seção 2. Capítulo 8

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bookChallenge: Perform Array Operations

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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.

              
12345

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

The output should be :

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.

              
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

Tudo estava claro?

Como podemos melhorá-lo?

Obrigado pelo seu feedback!

Seção 2. Capítulo 8
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