JavaScript Number Pattern 28

Posted in JavaScript Tutorial

Updated on Jan 10, 2024

By Mari Selvan

👁️ 247 - Views

⏳ 4 mins

💬 1 Comment

Photo Credit to CodeToFun

JavaScript Number Pattern 28

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=10; i>=1; i--)
{
 for(j=i; j<10; j++)
  document.write(j);
 document.write("0");
 for(k=9; k>=i; 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

0
909
89098
7890987
678909876
56789098765
4567890987654
345678909876543
23456789098765432
1234567890987654321

🧠 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 to be used in the loops.
for(i=10; i>=1; i--): This is an outer loop that runs from i=10 down to i=1, decrementing i by 1 in each iteration. This loop controls the rows of the pattern.
for(j=i; j<10; j++): This is an inner loop nested within the outer loop. It starts from the current value of i and goes up to j=9, incrementing j by 1 in each iteration. This loop generates the increasing sequence of numbers before the "0" in each row.
document.write(j);: This line writes the current value of j (the numbers from the inner loop) to the web page.
document.write("0");: This line writes the number "0" after the inner loop numbers.
for(k=9; k>=i; k--): This is another inner loop nested within the outer loop. It starts from k=9 and goes down to the current value of i, decrementing k by 1 in each iteration. This loop generates the decreasing sequence of numbers after the "0" in each row.
document.write(k);: This line writes the current value of k (the numbers from the second inner loop) to the web page.
document.write("<br>");: This line writes a line break (<br>) to the web page, creating a new line for the next row of the pattern.
The outer loop continues to iterate, and the process repeats for each value of i, generating the desired pattern.

💯 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!