JavaScript Alphabet Pattern 24

Posted in JavaScript Tutorial

Updated on Jan 10, 2024

By Mari Selvan

👁️ 114 - Views

⏳ 4 mins

💬 1 Comment

Photo Credit to CodeToFun

JavaScript Alphabet Pattern 24

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;
for(i=65; i<=69; i++)
{
 for(j=i; j>65; j--)
  document.write(String.fromCharCode(j));
 for(j=65; 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

A
BAB
CBABC
DCBABCD
EDCBABCDE

🧠 How the Program Works

Let's break down the logic behind the code:

var i, j;: This declares two variables, i and j, that will be used as loop counters.
for(i=65; i<=69; i++): This is the outer loop that iterates through the values of i from 65 to 69 (ASCII values for characters 'A' to 'E').
{: The start of the block of code associated with the outer loop.
for(j=i; j>65; j--): This is the first inner loop that starts with the value of i and decrements j until it's greater than 65. It uses the String.fromCharCode(j) function to convert the ASCII value j to a character and then uses document.write() to display the character.
document.write(String.fromCharCode(j));: Writes the character represented by the current ASCII value j to the document.
for(j=65; j<=i; j++): This is the second inner loop that starts with the value of 65 (ASCII value of 'A') and increments j until it's equal to the current value of i. This loop is responsible for writing characters in increasing order.
document.write(String.fromCharCode(j));: Writes the character represented by the current ASCII value j to the document.
document.write("<br>");: Writes a line break (<br>) to the document, creating a new line after each iteration of the outer loop.
}: The end of the block of code associated with the outer loop.

💯 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!