JavaScript Number Pattern 27

Posted in JavaScript Tutorial

Updated on Jan 10, 2024

By Mari Selvan

👁️ 723 - Views

⏳ 4 mins

💬 1 Comment

Photo Credit to CodeToFun

JavaScript Number Pattern 27

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

example.html

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<!DOCTYPE html>
<html>
<body>

<script>
var i, j, k;
for(i=1; i<=5; i++)
{
 for(j=1; j<=i; j++)
  document.write(j);
 for(k=i-1; k>=1; k--)
  document.write(k);
 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:

var i, j, k;: This line declares three variables: i, j, and k, which will be used as loop counters.
for(i=1; i<=5; i++): This is the outer loop, which runs from i = 1 to i = 5 (inclusive). This loop controls the number of rows in the pattern.
for(j=1; j<=i; j++): This is the first inner loop, which runs from j = 1 to j = i (inclusive). This loop generates and prints the numbers in ascending order from 1 up to the current value of i.
document.write(j);: This line writes the value of j (which represents the current number) to the webpage.
for(k=i-1; k>=1; k--): This is the second inner loop, which runs from k = i - 1 to k = 1 (inclusive). This loop generates and prints the numbers in descending order from i - 1 down to 1.
document.write(k);: This line writes the value of k (which represents the current number) to the webpage.
document.write("<br>");: This line writes an HTML line break (<br>) to the webpage, moving the next set of numbers to a new line.
After the inner loops have completed, the program moves to the next iteration of the outer loop, incrementing the value of i.
The entire process repeats for each value of i, generating a pattern of numbers that forms a triangular shape on the webpage.

💯 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 number 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!