JavaScript Alphabet Pattern 34

Posted in JavaScript Tutorial

Updated on Jan 10, 2024

By Mari Selvan

👁️ 191 - Views

⏳ 4 mins

💬 1 Comment

Photo Credit to CodeToFun

JavaScript Alphabet Pattern 34

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;
// First Part
for(i=65; i<=69; i++)
{
 for(j=69; j>=65; j--)
 {
  if(i == j)
   document.write(String.fromCharCode(j));
  else
   document.write("  ");
 }
 for(k=66; k<=69; k++)
 {
  if(i == k)
   document.write(String.fromCharCode(k));
  else
   document.write("&nbsp;&nbsp;");
 }
 document.write("<br>");
}
// Second Part
for(i=68; i>=65; i--)
{
 for(j=69; j>=65; j--)
 {
  if(i == j)
   document.write(String.fromCharCode(j));
  else
   document.write("&nbsp;&nbsp;");
 }
 for(k=66; k<=69; k++)
 {
  if(i == k)
   document.write(String.fromCharCode(k));
  else
   document.write("&nbsp;&nbsp;");
 }
 document.write("<br>");
}
</script>
</body>
</html>

💻 Testing the Program

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

Output

🧠 How the Program Works

Let's break down the logic behind the code:

Three variables i, j, and k are declared to be used as loop counters.
The outer loop runs five times, with i ranging from 65 to 69. These ASCII values correspond to the characters A to E.
Inside the outer loop, the first inner loop runs. It uses the variable j, which starts at 69 (ASCII value of 'E') and decrements down to 65 (ASCII value of 'A').
Inside the first inner loop, there's an if condition comparing i and j. If they are equal, it means that the current position in the pattern corresponds to the character represented by i (e.g., if i is 65, then 'A').
If i and j are equal, the corresponding character is written using document.write(String.fromCharCode(j));.
If i and j are not equal, two non-breaking spaces are written using document.write("  ");.
After the first inner loop completes, the second inner loop runs. It uses the variable k, which starts at 66 (ASCII value of 'B') and increments up to 69 (ASCII value of 'E').
Inside the second inner loop, there's an if condition comparing i and k. If they are equal, it means that the current position in the pattern corresponds to the character represented by i.
If i and k are equal, the corresponding character is written using document.write(String.fromCharCode(k));.
If i and k are not equal, two non-breaking spaces are written using document.write("  ");.
After both inner loops complete, a line break <br> is written to move to the next row.
The outer loop continues until i reaches 69 (ASCII value of 'E'), generating the desired pattern of characters and spaces.

💯 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!