JavaScript Number Pattern 38

Posted in JavaScript Tutorial

Updated on Jan 10, 2024

By Mari Selvan

👁️ 186 - Views

⏳ 4 mins

💬 1 Comment

Photo Credit to CodeToFun

JavaScript Number Pattern 38

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

example.html

Copied

<!DOCTYPE html>
<html>
 <head>
  <style>
   div{
    display: inline-block;
    text-align: center;
    width: 21px;
   }
  </style>
 </head>
<body>

<script>
var i, j, k = 1;
for(i=1; i<=5; i++)
{
 for(j=5; j>=i; j--)
  document.write("<div>"+ k++ +"</div>");
 document.write("<br>");
}
</script>
</body>
</html>

💻 Testing the Program

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

Output

1  2  3  4  5
6  7  8  9
10 11 12
13 14
15

🧠 How the Program Works

Let's break down the logic behind the code:

var i, j, k = 1;: This line declares three variables i, j, and k, and initializes k with the value 1.
for(i=1; i<=5; i++): This is the outer loop, which iterates from i = 1 to i = 5, incrementing i by 1 in each iteration.
Inside the outer loop, we have a nested loop:
- for(j=5; j>=i; j--): This is the inner loop that iterates from j = 5 down to i. In each iteration, j is decremented by 1.
- Inside this inner loop, we have the following line: document.write("<div>"+ k++ +"</div>");: This line writes a div element to the document using the document.write method. It contains the value of k followed by an increment operation (k++), which increments the value of k by 1 after its current value is used. This means that in each iteration of the inner loop, a new div element is added with the value of k, and then k is incremented by 1.
After the inner loop finishes its iterations, we have this line outside the inner loop: document.write("<br>");: This line adds a line break (<br>) to the document, creating a separation between the lines of div elements.
The outer loop continues its iterations until i reaches 5. As a result, the inner loop and the line break are executed multiple times, creating a 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!