JavaScript Number Pattern 57

Posted in JavaScript Tutorial

Updated on Jan 10, 2024

By Mari Selvan

👁️ 215 - Views

⏳ 4 mins

💬 1 Comment

Photo Credit to CodeToFun

JavaScript Number Pattern 57

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, m, n;
for(i=1; i<=5; i++)
{
 for(j=5; j>=1; j--)
 {
  if(i == j)
   document.write(j);
  else
   document.write("&nbsp;&nbsp;");
 }
 for(k=2; k<=5; k++)
 {
  if(i == k)
   document.write(k);
  else
   document.write("&nbsp;&nbsp;");
 }
 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:

var i, j, k, m, n;: Declare variables i, j, k, m, and n which will be used for looping and comparison.
for(i=1; i<=5; i++): This is the outer loop that iterates from 1 to 5. It represents the rows of the output.
Inside the outer loop, there are three nested loops:
1. for(j=5; j>=1; j--): This loop runs from 5 down to 1 and is used to generate the first part of each row (up to the diagonal).
2. if(i == j) document.write(j);: If the current value of i (from the outer loop) is equal to the current value of j (from the inner loop), then it writes the value of j to the document. Otherwise, it writes two non-breaking space ( ) characters to the document. This creates a pattern of numbers decreasing from 5 to 1 along the diagonal of each row.
3. else document.write("  ");: If i is not equal to j, it writes two non-breaking space characters to create the spacing.
4. The second nested loop, for(k=2; k<=5; k++), generates the second part of each row (after the diagonal).
5. if(i == k) document.write(k);: If the current value of i (from the outer loop) is equal to the current value of k (from the inner loop), then it writes the value of k to the document. Otherwise, it writes two non-breaking space characters. This creates a pattern of numbers increasing from 2 to 5 after the diagonal.
6. else document.write("  ");: If i is not equal to k, it writes two non-breaking space characters to create the spacing.
document.write("<br>");: After each row is generated (using the nested loops), this line adds a line break (<br>) to move to the next line.

💯 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!