Tutorials

JavaScript Star Pattern 1

Posted in JavaScript Tutorial

Updated on Jan 10, 2024

By Mari Selvan

👁️ 649 - Views

⏳ 4 mins

💬 1 Comment

Photo Credit to CodeToFun

JavaScript Star Pattern 1

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

example.html

Copied

<!DOCTYPE html>
<html>
<body>

<script>
var i, j;
for(i=1; i<=5; i++)
{
 for(j=1; j<=i; j++)
  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;: Declare two variables, i and j, which will be used as loop counters.
for(i=1; i<=5; i++): This initializes a loop with i starting from 1, continuing as long as i is less than or equal to 5, and incrementing i by 1 in each iteration.
{: The opening curly brace indicates the start of the loop's body. Everything inside the curly braces will be executed in each iteration of the loop.
for(j=1; j<=i; j++): This initializes a nested loop with j starting from 1, continuing as long as j is less than or equal to the current value of i, and incrementing j by 1 in each iteration.
{: The second opening curly brace indicates the start of the nested loop's body.
document.write("*");: Inside the nested loop's body, an asterisk (*) is printed to the document. This happens i times, so the number of asterisks printed in each row corresponds to the value of i.
}: The closing curly brace marks the end of the nested loop's body.
document.write("<br>");: After the nested loop completes (i.e., after printing the desired number of asterisks for the current row), a line break (<br>) is printed to the document. This moves the cursor to the next line.
}: The closing curly brace marks the end of the outer loop's body.

💯 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!