JavaScript Number Pattern 37

Posted in JavaScript Tutorial

Updated on Jan 10, 2024

By Mari Selvan

👁️ 243 - Views

⏳ 4 mins

💬 1 Comment

Photo Credit to CodeToFun

JavaScript Number Pattern 37

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

example.html

Copied

<!DOCTYPE html>
<html>
<body>

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

<script>: This tag is used to denote the start of a JavaScript code block.
var i, j;: Declares two variables i and j which will be used as loop counters.
for(i=1; i<=5; i++): The outer loop runs from i = 1 to i <= 5, incrementing i by 1 in each iteration. This loop controls the number of rows in the pattern.
Inner Loop 1 (for(j=i; j>1; j--)):
- The inner loop runs from j = i to j > 1, decrementing j by 1 in each iteration. This loop is responsible for printing decreasing numbers in each row.
- document.write(j);: Outputs the value of j to the web page.
Inner Loop 2 (for(j=1; j<=i; j++)):
- This loop runs from j = 1 to j <= i, incrementing j by 1 in each iteration. This loop is responsible for printing increasing numbers in each row.
- document.write(j);: Outputs the value of j to the web page.
document.write("<br>");: After both inner loops are executed for a given value of i, this line adds an HTML line break (<br>) to move to the next line in the output.
</script>: Closes the JavaScript code block.

💯 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!