JavaScript Alphabet Pattern 2

Posted in JavaScript Tutorial

Updated on Jan 10, 2024

By Mari Selvan

👁️ 145 - Views

⏳ 4 mins

💬 1 Comment

Photo Credit to CodeToFun

JavaScript Alphabet Pattern 2

Here`s a program that prints the above alphabet pattern using JavaScript Programming:

example.html

Copied

<!DOCTYPE html>
<html>
<body>

<script>
var i, j;
for(i=69; i>=65; i--)
{
 for(j=69; j>=i; j--)
  document.write(String.fromCharCode(j));
 document.write("<br>");
}
</script>
</body>
</html>

💻 Testing the Program

When you run the above program, it will print the following output:

Output

E
ED
EDC
EDCB
EDCBA

🧠 How the Program Works

Let's break down the logic behind the code:

The program starts by declaring two variables i and j using the var keyword. These variables will be used as loop counters.
The outer loop is defined with the following line: for(i=69; i>=65; i--). This loop will run as long as i is greater than or equal to 65. In each iteration, i is decremented by 1.
Inside the outer loop, there is a nested loop defined with the line: for(j=69; j>=i; j--). This inner loop will run as long as j is greater than or equal to the current value of i. In each iteration of the outer loop, the inner loop iterates from j down to the value of i.
Within the inner loop, the program uses the document.write() function to display characters. Specifically, it uses String.fromCharCode(j) to convert the Unicode value j into a character and then writes that character to the document.
After the inner loop completes, the program writes a line break ("<br>") using the document.write() function. This causes the characters to be displayed in a new line for each iteration of the outer loop.
The outer loop continues to iterate, and with each iteration, it decrements the value of i. This results in the inner loop generating and displaying a decreasing sequence of characters in each line.
The program continues this process until the condition of the outer loop (i >= 65) becomes false.

💯 Tips for Enhancement:

Explore the versatility of this pattern by adjusting its parameters. Whether you increase or decrease the size, tweak the spacing, or modify the characters used, each change opens up a world of possibilities, allowing you to customize and create your unique visual effects.

✔ Conclusion:

Creating visually appealing patterns is not only a fun endeavour but also a great way to enhance your programming or design skills. We hope this tutorial has inspired you to explore the world of creative coding. Share your creations with us, and let your imagination run wild!

🤗 Closing Call-to-Action:

We'd love to see your unique interpretations of the alphabet pattern. Share your creations in the comments below, and don't hesitate to reach out if you have any questions or suggestions for future tutorials. Happy coding!