JavaScript Alphabet Pattern 13

Posted in JavaScript Tutorial

Updated on Jan 10, 2024

By Mari Selvan

👁️ 127 - Views

⏳ 4 mins

💬 1 Comment

Photo Credit to CodeToFun

JavaScript Alphabet Pattern 13

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

example.html

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<!DOCTYPE html>
<html>
<body>

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

💻 Testing the Program

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

Output

A 
B C 
D E F 
G H I J 
K L M N O

🧠 How the Program Works

Let's break down the logic behind the code:

var i, j, k = 65;: Three variables i, j, and k are declared, and k is initialized with the ASCII value of the character 'A', which is 65.
for(i=65; i<=69; i++): This is the outer loop, which iterates over the values of i from 65 (ASCII value of 'A') to 69 (ASCII value of 'E') inclusive.
Inside the outer loop, there is a nested loop: for(j=65; j<=i; j++).
- The inner loop iterates over the values of j from 65 to the current value of i.
- String.fromCharCode(k++) converts the current value of k (ASCII value of a character) to its corresponding character. It then increments k so that the next character is used in the next iteration.
document.write(String.fromCharCode(k++) +" ");: This line writes the character corresponding to the current value of k followed by a space.
document.write("<br>");: After the inner loop completes, a line break (<br>) is written to move to the next line.
The outer loop continues its iterations, and for each iteration, the inner loop writes characters and spaces based on the current value of i.
Once the outer loop finishes (when i reaches 70), the program completes execution.

💯 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!