Tutorials

JavaScript Star Pattern 4

Posted in JavaScript Tutorial

Updated on Jan 10, 2024

By Mari Selvan

👁️ 565 - Views

⏳ 4 mins

💬 1 Comment

Photo Credit to CodeToFun

JavaScript Star Pattern 4

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=1; j<i; j++)
  document.write("&nbsp;&nbsp;");
 for(k=5; 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:

Variables i, j, and k are declared to be used as loop counters.
The outer loop: for(i=1; i<=5; i++) - This loop will run for values of i from 1 to 5, controlling the number of rows in the pattern.
Inside the outer loop, there's an inner loop (Inner loop 1) controlled by j, responsible for printing spaces before the stars. It runs from 1 to i-1 to create a pyramid-like pattern. document.write("  "); is used to write two non-breaking space entities, effectively adding visual spacing.
After the inner space-printing loop, there's another inner loop (Inner loop 2) controlled by k. This loop runs from 5 to i and is responsible for printing the stars. This will create a decreasing pattern of stars in each row. document.write("*"); is used to write a star.
Once both inner loops are done executing, document.write("<br>"); is used to write a line break, moving the cursor to the next line for the next row.
The outer loop continues to iterate until i reaches 5, creating a pattern of rows with increasing stars and decreasing spaces.
The final result is a pattern of stars printed on the webpage that resembles a pyramid.

💯 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!