BIS601 Program 1

1a) Write a script that Logs “Hello, World!” to the console. Create a script that calculates the sum of two numbers and displays the result in an alert box.
1b) Create an array of 5 cities and perform the following operations: Log the total number of cities. Add a new city at the end. Remove the first city. Find and log the index of a specific city.

Step 1: Install Visual Studio Code (VS Code)

Why Visual Studio Code? VS Code is a free, open-source code editor that provides powerful features like IntelliSense, debugging support, Git integration, and extensions specifically designed for JavaScript and Node.js development.

• Download VS Code
  • Go to the Visual Studio Code official website.
  • Download the version for your operating system.
• Install VS Code
  Follow the installation instructions for your operating system.
• Verify Installation
  After installation, open VS Code and check if it’s working. If successful, you should see the VS Code welcome screen.

Step 2: Create Folder and open with vscode

• Inside the folder create index.html file.
• After then copy the below code and paste it in that index.html file and save it. Note do one by one both programs.

1a) Write a script that Logs “Hello, World!” to the console. Create a script that calculates the sum of two numbers and displays the result in an alert box.

PROGRAM:

<script>
console.log("Hello World!")
let number1 = 5;
let number2 = 7;
let sum = number1 + number2;
alert("The sum of the numbers is: " + sum);
</script>

Step 3: To run program:

• Make sure Before running this program live server extension installed in your vscode to run.
• Right click in the code and open with live server to see the output in alert box.
• After then open the developer console and see the output of hello world!.

OUTPUT:

Hello, World!
The sum is: 12

1b) Create an array of 5 cities and perform the following operations: Log the total number of cities. Add a new city at the end. Remove the first city. Find and log the index of a specific city.

PROGRAM:

<script>
let cities = ["New York", "Los Angeles", "Chicago", "Miami", "Houston"];

console.log("Total number of cities: " + cities.length);

cities.push("San Francisco");
console.log("Cities after adding a new one: " + cities);

cities.shift();
console.log("Cities after removing the first one: " + cities);

let cityIndex = cities.indexOf("Miami");
console.log("Index of Miami: " + cityIndex);
</script>

To run program:

• Same procedure for the program 1.
• Open developer console to see output.

OUTPUT: