JavaScript Alphabet Pattern 10

Posted in JavaScript Tutorial

Updated on Jan 10, 2024

By Mari Selvan

👁️ 85 - Views

⏳ 4 mins

💬 1 Comment

Photo Credit to CodeToFun

JavaScript Alphabet Pattern 10

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;
for(i=69; i>=65; i--)
{
 for(j=69; j>=i; j--)
  document.write(String.fromCharCode(i));
 document.write("<br>");
}
</script>
</body>
</html>

💻 Testing the Program

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

Output

E
DD
CCC
BBBB
AAAAA

🧠 How the Program Works

Let's break down the logic behind the code:

<script> tag: This tag indicates the start of a JavaScript code block within an HTML document.
var i, j;: Here, two variables i and j are declared. These variables will be used in the loops to control the pattern generation.
for(i=69; i>=65; i--) {: This is the outer loop. It initializes the variable i with the value 69 and runs as long as i is greater than or equal to 65. In each iteration, i is decremented by one.
Inner Loop (for(j=69; j>=i; j--) {): This is the inner loop nested inside the outer loop. It initializes the variable j with the value 69 and runs as long as j is greater than or equal to the current value of i. In each iteration, j is decremented by one.
document.write(String.fromCharCode(i));: Inside the inner loop, this line converts the current value of i into a character using the String.fromCharCode() method and then outputs that character using the document.write() function. This means that for each value of i, the character corresponding to that ASCII value is written to the webpage repeatedly as per the inner loop's iteration.
document.write("<br>");: After the inner loop finishes iterating for a specific value of i, this line writes a line break (<br>) to the webpage. This creates a new line before the next iteration of the outer loop.
The outer loop continues to iterate with decreasing values of i until i becomes less than 65. As a result, the program generates a pattern of characters in descending order.

💯 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!