Are you struggling with your JavaScript assignments? Whether it's understanding complex concepts or implementing tricky algorithms, fret not! At ProgrammingHomeworkHelp.com, we specialize in providing top-notch assistance to students like you who need help with their JavaScript assignments. If you're stuck and thinking, "Who can do my JavaScript assignment," you've come to the right place. In this post, we'll delve into a couple of master-level JavaScript questions along with expert solutions to help you gain a deeper understanding of the language. Let's dive in!

Question 1: Object-Oriented JavaScript

You've been tasked with creating a simple banking application using object-oriented JavaScript. Your application should have the following features:

• A BankAccount class with properties for account number, account holder name, and balance.
• Methods within the BankAccount class to deposit funds, withdraw funds, and display the current balance.
• Ensure that withdrawing funds does not allow the balance to go below zero.
• Create instances of BankAccount to demonstrate the functionality.

Solution:

class BankAccount {
  constructor(accountNumber, accountHolderName, balance) {
    this.accountNumber = accountNumber;
    this.accountHolderName = accountHolderName;
    this.balance = balance;
  }

  deposit(amount) {
    this.balance += amount;
    console.log(`Deposited ${amount} successfully.`);
  }

  withdraw(amount) {
    if (amount  this.balance) {
      console.log("Insufficient funds.");
    } else {
      this.balance -= amount;
      console.log(`Withdrawn ${amount} successfully.`);
    }
  }

  displayBalance() {
    console.log(`Account Balance: ${this.balance}`);
  }
}

// Creating instances of BankAccount
const account1 = new BankAccount(123456, "John Doe", 1000);
account1.deposit(500);
account1.displayBalance();
account1.withdraw(700);
account1.displayBalance();

Explanation:

• We define a BankAccount class with constructor method to initialize account properties.
• Methods like deposit and withdraw allow users to interact with the account.
• The withdraw method checks if there are sufficient funds before deducting the amount.
• Finally, we create an instance of BankAccount, perform operations, and display the balance.

Question 2: Asynchronous JavaScript

You're building a web application that fetches data from an API and displays it on the page. Implement a function fetchData that fetches data from a given URL asynchronously using Fetch API. Handle any errors that may occur during the fetch operation.

Solution:

async function fetchData(url) {
  try {
    const response = await fetch(url);

    if (!response.ok) {
      throw new Error('Failed to fetch data');
    }

    const data = await response.json();
    console.log(data);
  } catch (error) {
    console.error(error.message);
  }
}

// Example usage
const apiUrl = 'https://api.example.com/data';
fetchData(apiUrl);

Explanation:

• We define an asynchronous function fetchData that accepts a URL parameter.
• Inside the function, we use the Fetch API to make an asynchronous HTTP request.
• We check if the response is successful using the ok property. If not, an error is thrown.
• If the response is successful, we parse the JSON data and log it.
• Any errors that occur during the fetch operation are caught and logged.

Conclusion

Mastering JavaScript requires practice and understanding of its core concepts. By tackling challenging assignments and seeking expert guidance, you can enhance your skills and become proficient in the language. If you ever find yourself stuck with your JavaScript assignments, don't hesitate to reach out to us at ProgrammingHomeworkHelp.com. We're here to help you succeed!