JavaScript Alphabet Pattern 22

Posted in JavaScript Tutorial

Updated on Jan 10, 2024

By Mari Selvan

👁️ 148 - Views

⏳ 4 mins

💬 1 Comment

Photo Credit to CodeToFun

JavaScript Alphabet Pattern 22

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

example.html

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<!DOCTYPE html>
<html>
 <head>
  <style>
   div{
    display: inline-block;
    text-align: center;
    width: 18px;
   }
  </style>
 </head>
<body>

<script>
var i, j;
var k = 65;
for(i=65; i<=69; i++)
{
 for(j=69; j>=65; j--)
 {
  if(j > i)
   document.write("<div></div>");
  else
   document.write("<div>"+String.fromCharCode(k++)+"</div>");
 }
 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;: Declare two variables i and j to be used as loop counters.
var k = 65;: Initialize variable k with the ASCII code for the character 'A', which is 65.
for(i=65; i<=69; i++): Outer loop that iterates from 65 to 69 (ASCII codes for characters 'A' to 'E').
Inside the outer loop, we have a nested loop: for(j=69; j>=65; j--): Inner loop that iterates from 69 to 65.
if(j > i): If the value of j (which represents the current inner loop iteration) is greater than the value of i (which represents the current outer loop iteration), then an empty <div></div> is written using the document.write() method. This creates a formatting space in the pattern.
else: If the condition in the previous step is not met (i.e., when j <= i), the following code executes.
document.write("<div>"+String.fromCharCode(k++)+"</div>");: Here, a <div> element is written to the document with the content of the character represented by the current value of k, obtained using the String.fromCharCode() method. Then, the k variable is incremented, moving to the next ASCII character.
After the inner loop completes, document.write("<br>"); is used to add a line break after each row of <div> elements.
The outer loop continues until i reaches 69 (ASCII code for 'E').

💯 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!