Front-end Tutorials

Front-end Tutorials

HTMLCSSSassJavaScriptReactJS
CMS Tutorials

CMS Tutorials

WordPress
Tutorials expand

JavaScript Number Pattern 1

Updated on Jan 10, 2024
By Mari Selvan
👁️ 780 - Views
⏳ 4 mins
💬 2 Comments
JavaScript Number Pattern 1

Photo Credit to CodeToFun

JavaScript Number Pattern 1

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

example.html
Copied
Copy To Clipboard
<!DOCTYPE html>
<html>
<body>

<script>
var i, j;
for(i=5; i>=1; 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
12345
1234
123
12
1

🧠 How the Program Works

Let's break down the logic behind the code:

  1. <!DOCTYPE html> and <html>: These lines define the document type and the start of the HTML code.
  2. <body>: The <body> tag indicates the beginning of the HTML body, where the visible content of the webpage is placed.
  3. <script>: This tag is used to include JavaScript code within the HTML document.
  4. var i, j;: Two variables i and j are declared using the var keyword. These variables will be used for controlling the loops and generating the pattern.
  5. for(i=5; i>=1; i--): This is an outer for loop that initializes i to 5, checks if i is greater than or equal to 1, and decrements i by 1 in each iteration. This loop controls the number of rows in the pattern.
  6. Inside the outer loop, there's an inner for loop:
    • for(j=1; j<=i; j++): This inner loop initializes j to 1, checks if j is less than or equal to the current value of i, and increments j by 1 in each iteration. This loop generates the numbers within each row of the pattern.
  7. Inside the inner loop:
    • document.write(j);: This line writes the value of j to the webpage. Since the inner loop generates numbers from 1 to the current value of i, this will output a sequence of numbers within the current row.
  8. document.write("<br>");: After the inner loop finishes, this line writes a line break (<br>) to the webpage. This creates a new line, separating each row of the pattern.
  9. </script>: Closes the JavaScript code block.
  10. </body> and </html>: Close the <body> and <html> tags, respectively, marking the end of the HTML content.

💯 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!

👨‍💻 Join our Community:

To get interesting news and instant updates on Front-End, Back-End, CMS and other Frameworks. Please Join the Telegram Channel:

Author

author
👋 Hey, I'm Mari Selvan

For over eight years, I worked as a full-stack web developer. Now, I have chosen my profession as a full-time blogger at codetofun.com.

Buy me a coffee to make codetofun.com free for everyone.

Buy me a Coffee

Share Your Findings to All

Subscribe
Notify of
guest
2 Comments
Oldest
Newest Most Voted
Inline Feedbacks
View all comments
Mari Selvan
Mari Selvan
1 year ago

If you have any doubts regarding this article (JavaScript Number Pattern 1) please comment here. I will help you immediately.

Randy
4 months ago

Using JavaScript, I can’t seem to break out of an inner “for loop”. When the condition is met, then it breaks out of both the inner “for loop” and the outer “for loop”, so it does not find all the array items from the outer “for loop”. I tried using a break label, but it is ignored. Is there a better way to find all items from the 1st array in the 2nd array than a nested “for loop”?

We make use of cookies to improve our user experience. By using this website, you agree with our Cookies Policy
AgreeCookie Policy