JavaScript Alphabet Pattern 28

Posted in JavaScript Tutorial

Updated on Jan 10, 2024

By Mari Selvan

👁️ 64 - Views

⏳ 4 mins

💬 1 Comment

Photo Credit to CodeToFun

JavaScript Alphabet Pattern 28

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

example.html

Copied

<!DOCTYPE html>
<html>
 <head>
  <style>
   div{
    display: inline-block;
    text-align: center;
    width: 15px;
   }
  </style>
 </head>
<body>

<script>
var i, j, k = 69;
for(i=k; i>=65; i--)
{
 for(j=k; j>=65; j--)
 {
  if(j > i)
   document.write("<div>"+String.fromCharCode(j)+"</div>");
  else
   document.write("<div>"+String.fromCharCode(i)+"</div>");
 }
 for(j=66; j<=k; j++)
 {
  if(j > i)
   document.write("<div>"+String.fromCharCode(j)+"</div>");
  else
   document.write("<div>"+String.fromCharCode(i)+"</div>");
 }
 document.write("<br>");
}
</script>
</body>
</html>

💻 Testing the Program

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

Output

E E E E E E E E E
E D D D D D D D E
E D C C C C C D E
E D C B B B C D E
E D C B A B C D E

🧠 How the Program Works

Let's break down the logic behind the code:

var i, j, k = 69;: This line declares three variables i, j, and k, and initializes k with the value 69.
for(i=k; i>=65; i--) {: This is the outer loop. It starts with the value of k (69) and decrements i until it reaches 65 (inclusive). This loop controls the rows in the output.
for(j=k; j>=65; j--) {: This is the first inner loop. It also starts with the value of k (69) and decrements j until it reaches 65 (inclusive). This loop controls the first part of each row's content.
Inside the first inner loop:
- if(j > i): Checks if the current value of j is greater than the current value of i.
  - If true, it writes a <div> element containing the character represented by the ASCII value of j.
  - If false, it writes a <div> element containing the character represented by the ASCII value of i.
for(j=66; j<=k; j++) {: This is the second inner loop. It starts with the value 66 and increments j until it reaches the value of k (69, inclusive). This loop controls the second part of each row's content.
Inside the second inner loop:
- if(j > i): Checks if the current value of j is greater than the current value of i,.
  - If true, it writes a <div> element containing the character represented by the ASCII value of j.
  - If false, it writes a <div> element containing the character represented by the ASCII value of i.
document.write("<br>");: Writes a line break after the inner loops complete, which separates rows in the output.

💯 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!