JavaScript Number Pattern 55

Posted in JavaScript Tutorial

Updated on Jan 10, 2024

By Mari Selvan

👁️ 303 - Views

⏳ 4 mins

💬 1 Comment

Photo Credit to CodeToFun

JavaScript Number Pattern 55

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, res;
for(i=1; i<=5; i++)
{
 k = 4;
 res = i;
 for(j=i; j<i+i; j++)
 {
  if(i == j)
   document.write(j +" ");
  else  
  {
   res = res + k;
   document.write(res +" ");
   k--;
  }
 }
 document.write("<br>");
}
</script>
</body>
</html>

💻 Testing the Program

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

Output

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

🧠 How the Program Works

Let's break down the logic behind the code:

The program begins with a <script> tag, indicating that it contains JavaScript code.
Variables i, j, k, and res are declared using the var keyword. These variables will be used in the following loops and calculations.
The outer loop runs from i = 1 to i <= 5. This loop iterates five times, with i taking on values 1, 2, 3, 4, and 5.
Inside the outer loop, the variable k is set to 4, and res is set to the current value of i.
An inner loop runs from j = i to j < i + i, effectively looping i times. This loop is responsible for printing the values and performing calculations based on the current iteration of the outer loop.
Inside the inner loop, there is an if statement that checks if i is equal to j. If true, it means the loop is in its first iteration, and the value of j (which is equal to i) is printed using document.write(j +" ");.
If the condition in the if statement is not met (meaning i is not equal to j), the else block is executed.
Inside the else block, the value of res (initialized to i) is incremented by the value of k. Then, the updated value of res is printed using document.write(res +" ");.
After printing the updated value of res, the value of k is decremented by 1.
The inner loop continues to iterate, performing the calculations and printing the results for the remaining iterations.
After the inner loop completes, a line break (<br>) is printed using document.write("<br>");. This moves the output to the next line before the next iteration of the outer loop.
The outer loop continues to iterate, and the entire process repeats for each value of i from 1 to 5.

💯 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!