JavaScript Number Pattern 44

Posted in JavaScript Tutorial

Updated on Jan 10, 2024

By Mari Selvan

👁️ 220 - Views

⏳ 4 mins

💬 1 Comment

Photo Credit to CodeToFun

JavaScript Number Pattern 44

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;
// First Part
for(i=1; i<=5; i++)
{
 for(j=i; j<5; j++)
  document.write("&nbsp;&nbsp;");
 for(k=1; k<i*2; k++)
  document.write(k);
 document.write("<br>");
}
// Second Part
for(i=4; i>=1; i--)
{
 for(j=5; j>i; j--)
  document.write("&nbsp;&nbsp;");
 for(k=1; k<i*2; k++)
  document.write(k);
 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;: This line declares three variables: i, j, and k, which will be used in the loops.
First Part: This section generates the upper half of the pattern.
1. for(i=1; i<=5; i++): This loop iterates from i = 1 to i = 5, inclusive. It represents each row of the upper half of the pattern.
2. for(j=i; j<5; j++): This loop adds spaces before the numbers to align them properly. It iterates from j = i to j < 5, adding two non-breaking space characters ( ) for each iteration. The number of spaces decreases as i increases.
3. for(k=1; k<i*2; k++): This loop generates the sequence of numbers to be printed on each row. It iterates from k = 1 to k < i * 2, and it prints the value of k for each iteration.
4. document.write(k);: This writes the value of k (current number) to the document.
5. document.write("<br>");: This writes a line break (<br>) to the document, creating a new line after each row of numbers.
Second Part: This section generates the lower half of the pattern.
1. for(i=4; i>=1; i--): This loop iterates from i = 4 to i = 1, inclusive. It represents each row of the lower half of the pattern.
2. for(j=5; j>i; j--): This loop adds spaces before the numbers to align them properly. It iterates from j = 5 to j > i, adding two non-breaking space characters ( ) for each iteration. The number of spaces decreases as i decreases.
3. for(k=1; k<i*2; k++): This loop generates the sequence of numbers to be printed on each row. It iterates from k = 1 to k < i * 2, and it prints the value of k for each iteration.
4. document.write(k);: This writes the value of k (current number) to the document.
5. document.write("<br>");: This writes a line break (<br>) to the document, creating a new line after each row of numbers.

💯 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!