JavaScript Alphabet Pattern 17

Posted in JavaScript Tutorial

Updated on Jan 10, 2024

By Mari Selvan

👁️ 83 - Views

⏳ 4 mins

💬 1 Comment

Photo Credit to CodeToFun

JavaScript Alphabet Pattern 17

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;
var k = 65;
for(i=65; i<=69; i++)
{
 for(j=69; j>=65; j--)
 {
  if(i == j)
   document.write("*");
  else
   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

EDCB*
EDC*A
ED*BA
E*CBA
*DCBA

🧠 How the Program Works

Let's break down the logic behind the code:

<script> tag: This is an HTML tag that indicates the start of a JavaScript code block embedded within the HTML document.
var i, j;: Two variables i and j are declared using the var keyword. These variables will be used for looping and comparison within the nested loops.
var k = 65;: A variable k is declared and assigned the value 65. However, this variable is not used in the rest of the code.
for(i=65; i<=69; i++): This is an outer loop that iterates over the values of i from 65 to 69, both inclusive.
Nested for loop: This is an inner loop that iterates over the values of j from 69 to 65, both inclusive. The loop uses j-- to decrement the value of j in each iteration.
if(i == j): This if statement checks if the current values of i and j are equal. If they are equal, it means we're on the diagonal of the matrix-like pattern being created, and a "*" is printed.
else: If the current values of i and j are not equal, this block is executed.
document.write(String.fromCharCode(j));: If i and j are not equal, the character represented by the Unicode value j is converted into a string using String.fromCharCode(j) and then printed using document.write().
document.write("<br>");: After each iteration of the inner loop (for each value of j), a line break <br> is added to create a new line in the output.
The loops continue to execute, and for each iteration of the outer loop (for each value of i), a row of characters and * is generated according to the conditions specified.

💯 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!