JavaScript Number Pattern 46

Posted in JavaScript Tutorial

Updated on Jan 10, 2024

By Mari Selvan

👁️ 204 - Views

⏳ 4 mins

💬 1 Comment

Photo Credit to CodeToFun

JavaScript Number Pattern 46

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 = 5;
for(i=k; i>=1; i--)
{
 for(j=k; j>=1; j--)
 {
  if(j > i)
   document.write(j +" ");
  else
   document.write(i +" ");
 }
 for(j=2; j<=k; j++)
 {
  if(j > i)
   document.write(j +" ");
  else
   document.write(i +" ");
 }
 document.write("<br>");
}
</script>
</body>
</html>

💻 Testing the Program

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

Output

5 5 5 5 5 5 5 5 5 
5 4 4 4 4 4 4 4 5 
5 4 3 3 3 3 3 4 5 
5 4 3 2 2 2 3 4 5 
5 4 3 2 1 2 3 4 5

🧠 How the Program Works

Let's break down the logic behind the code:

var i, j, k = 5;: Three variables i, j, and k are declared using the var keyword. The value of k is initialized to 5.
for(i=k; i>=1; i--): A for loop is initiated with i starting at the value of k (5) and decreasing by 1 in each iteration until it reaches 1.
Inside the outer loop:
1. for(j=k; j>=1; j--): Another nested for loop is initiated with j starting at the value of k (5) and decreasing by 1 in each iteration until it reaches 1.
2. if(j > i): This condition checks if j is greater than i.
  - If true, it writes the value of j followed by a space using document.write().
  - If false, it writes the value of i followed by a space using document.write().
Still inside the outer loop:
1. for(j=2; j<=k; j++): Another nested for loop is initiated with j starting at 2 and increasing by 1 in each iteration until it reaches the value of k (5).
2. if(j > i): This condition checks if j is greater than i.
  - If true, it writes the value of j followed by a space using document.write().
  - If false, it writes the value of i followed by a space using document.write().
document.write("<br>");: After completing both nested loops, a line break (<br>) is written using document.write() to move to the next line.
The outer loop continues its iterations, and the above steps (3 to 5) are repeated until i reaches 1.
Once the loops finish executing, the final output will be a pattern of numbers and spaces printed in rows, forming a pyramid-like shape. The pattern is generated based on the conditions specified within the nested loops.

💯 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!