JavaScript Number Pattern 5

Posted in JavaScript Tutorial

Updated on Jan 10, 2024

By Mari Selvan

👁️ 1287 - Views

⏳ 4 mins

💬 1 Comment

Photo Credit to CodeToFun

JavaScript Number Pattern 5

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=1; i<=5; i++)
{
 for(j=1; j<=i; 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 HTML document. It specifies the document type and version being used.
<html>: The opening <html> tag indicates the beginning of an HTML document.
<body>: The opening tag defines the start of the HTML document's body content, where the visible content is placed.
<script>: This is the opening tag for including JavaScript code within the HTML document.
var i, j;: Two variables i and j are declared using the var keyword. These variables will be used as loop counters.
for(i=1; i<=5; i++): This is a for loop that iterates from 1 to 5 (inclusive) with an increment of 1 for each iteration. It assigns the value of i on each iteration.
{: The opening curly brace indicates the beginning of the loop's block of code.
for(j=1; j<=i; j++): This is a nested for loop that iterates from 1 to the current value of i with an increment of 1 for each iteration. It assigns the value of j on each iteration. This loop is responsible for printing the numbers in the pattern.
document.write(j);: This line uses the document.write() function to output the value of j to the document. It prints the current value of j (which represents the number) to the screen.
document.write("<br>");: This line uses document.write() to insert an HTML line break (<br>) after printing the numbers for each row. This causes the numbers to be displayed in a new line.
}: The closing curly brace indicates the end of the inner loop's block of code.
}: The closing curly brace indicates the end of the outer loop's block of code.
</script>: This is the closing tag for the JavaScript code block.
</body>: The closing </body> tag indicates the end of the HTML document's body content.
</html>: The closing </html> tag indicates the end of 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!