JavaScript Number Pattern 3

Posted in JavaScript Tutorial

Updated on Jan 10, 2024

By Mari Selvan

👁️ 477 - Views

⏳ 4 mins

💬 1 Comment

Photo Credit to CodeToFun

JavaScript Number Pattern 3

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;
for(i=5; i>=1; i--)
{
 for(j=i; j>=1; j--)
  document.write(j);
 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:

<!DOCTYPE html>: This is the document type declaration for an HTML5 document. It indicates that the following content is written in HTML5.
<html>: The opening tag for the HTML document.
<body>: The opening tag for the HTML body, where the visible content of the web page is placed.
<script>: This is the opening tag for including JavaScript code within the HTML document.
var i, j;: This line declares two variables, i and j, using the var keyword. These variables will be used to control the loops.
for(i=5; i>=1; i--): This line starts a loop using the for loop construct. It initializes i to 5, and the loop continues as long as i is greater than or equal to 1. After each iteration, i is decremented by 1.
{: The opening brace marks the beginning of the loop's block of code.
for(j=i; j>=1; j--): Inside the outer loop, this line starts another loop, this time using the variable j. j is initialized to the value of i, and the loop continues as long as j is greater than or equal to 1. After each iteration, j is decremented by 1.
document.write(j);: Inside the inner loop, this line writes the value of j to the document. document.write() is a JavaScript function that writes content to the HTML document.
document.write("<br>");: This line writes a line break (<br>) to the document after each inner loop iteration, causing the numbers to be displayed in separate lines.
}: The closing brace marks the end of the inner loop's block of code.
}: The closing brace marks the end of the outer loop's block of code.
</script>: The closing tag for the JavaScript code block.
</body>: The closing tag for the HTML body.
</html>: The closing tag for the HTML document.

💯 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!