JavaScript Number Pattern 18

Posted in JavaScript Tutorial

Updated on Jan 10, 2024

By Mari Selvan

👁️ 261 - Views

⏳ 4 mins

💬 1 Comment

Photo Credit to CodeToFun

JavaScript Number Pattern 18

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

example.html

Copied

<!DOCTYPE html>
<html>
<body>

<script>
var i, j, k;
for(i=1; i<=5; i++)
{
 if(i % 2 == 0)
  k = 2;
 else
  k = 1;
 for(j=1; j<=i; j++)
 {
  document.write(k +" ");
  k += 2;
 }
 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:

Variable Declaration: Three variables are declared using the var keyword: i, j, and k.
Outer Loop: The outer loop is a for loop that initializes i to 1. It continues as long as i is less than or equal to 5. In each iteration, i is incremented by 1.
Outer Loop Conditional Check: Before entering the inner loop, the program checks if the value of i is even or odd using the condition i % 2 == 0. If i is even, k is assigned the value 2; otherwise, k is assigned the value 1.
Inner Loop: The inner loop is also a for loop that initializes j to 1. It continues as long as j is less than or equal to i. In each iteration of the inner loop, the program performs the following steps:
1. Outputs the value of k followed by a space using document.write(k + " ");.
2. Increments the value of k by 2.
Line Break: After completing the inner loop, the program writes a line break using document.write("<br>");. This creates a new line in the output.
Repeat Outer Loop: The outer loop repeats the above steps for the next value of i until i becomes greater than 5.
Program Completion: Once the outer loop finishes executing for all values of i, the program ends.

💯 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!