JavaScript Star Pattern 3

Posted in JavaScript Tutorial

Updated on Jan 10, 2024

By Mari Selvan

👁️ 549 - Views

⏳ 4 mins

💬 1 Comment

Photo Credit to CodeToFun

JavaScript Star Pattern 3

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

example.html

Copied

<!DOCTYPE html>
<html>
<body>

<script>
var i, j, k;
for(i=1; i<=5; i++)
{
 for(j=5; j>i; j--)
  document.write("&nbsp;&nbsp;");
 for(k=1; k<=i; k++)
  document.write("*");
 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 declares three variables i, j, and k which will be used as loop counters.
for(i=1; i<=5; i++): This is the outermost loop that runs from i = 1 to i = 5, incrementing i by 1 in each iteration. This loop controls the number of rows in the pattern.
Inside the outer loop:
- for(j=5; j>i; j--): This is an inner loop that runs from j = 5 down to j being greater than i, decrementing j by 1 in each iteration. This loop is responsible for printing spaces before the stars to create the indentation effect. It essentially prints   (non-breaking space) twice in each iteration of the loop.
- for(k=1; k<=i; k++): This is another inner loop that runs from k = 1 to k being less than or equal to i, incrementing k by 1 in each iteration. This loop is responsible for printing the stars in each row. It prints * in each iteration of the loop.
- document.write("<br>");: After both inner loops finish, this line prints a line break (<br>) to move to the next line, creating the effect of moving to the next row.

💯 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 star 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!