JavaScript Alphabet Pattern 29

Posted in JavaScript Tutorial

Updated on Dec 24, 2023

By Mari Selvan

👁️ 108 - Views

⏳ 4 mins

💬 1 Comment

Photo Credit to CodeToFun

JavaScript Alphabet Pattern 29

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: 15px;
   }
  </style>
 </head>
<body>

<script>
var i, j, k = 69;
// First Part
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>");
}
// Second Part
for(i=66; i<=k; 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>

💻 OutPut

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

🤓 Understanding the Logic

Let's break down the logic behind the code:

First Part:
1. Initialize three variables: i, j, and k (k is set to 69).
2. The outer loop (for loop) runs from i = k (69) to i >= 65, decrementing i in each iteration.
3. Inside the outer loop, there are two nested for loops, both using the variable j.
4. The first nested loop runs from j = k (69) to j >= 65, decrementing j in each iteration. It generates a series of <div> elements containing characters using the following logic:
  - If j is greater than i, it prints a <div> containing the character corresponding to ASCII value j.
  - Otherwise, it prints a <div> containing the character corresponding to ASCII value i.
5. The second nested loop runs from j = 66 to j <= k, incrementing j in each iteration. It generates another set of <div> elements using the same logic as above.
6. After both nested loops, a line break (<br>) is added to separate rows of characters.
Second Part:
1. The second part of the program begins with a new for loop where i is initialized to 66.
2. This loop runs from i = 66 to i <= k (69), incrementing i in each iteration.
3. Like in the first part, there are two nested for loops inside the outer loop, both using the variable j.
4. The first nested loop runs from j = k (69) to j >= 65, decrementing j in each iteration. It generates a series of <div> elements containing characters using the same logic as described earlier.
5. The second nested loop runs from j = 66 to j <= k, incrementing j in each iteration. It generates another set of <div> elements using the same logic.
6. After both nested loops, a line break (<br>) is added to separate rows of characters.

💯 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!