ITI (Trade-COPA) Day- 18

ITI COPA (Computer Operator & Programming Assistant) – 

Basic Java Script Programs

1. Program to Display “Hello World”

<script>
  document.write("Hello World");
</script>

👉 Purpose:
Used to understand basic JavaScript output.

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2. Program to Add Two Numbers

<script>
  var a = 10;
  var b = 20;
  var sum = a + b;
  document.write("Sum = " + sum);
</script>

👉 Concept Used: Variables, arithmetic operator

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3. Program to Take Input from User and Display It

<script>
  var name = prompt("Enter your name:");
  document.write("Welcome " + name);
</script>

👉 Concept Used: prompt() function

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4. Program to Check Even or Odd Number

<script>
  var num = prompt("Enter a number:");

  if (num % 2 == 0) {
    document.write("Even Number");
  } else {
    document.write("Odd Number");
  }
</script>

👉 Concept Used: if–else, modulus operator

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5. Program to Find Largest of Two Numbers

<script>
  var a = 25;
  var b = 15;

  if (a > b) {
    document.write("A is greater");
  } else {
    document.write("B is greater");
  }
</script>

👉 Concept Used: comparison operator

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6. Program to Print Numbers from 1 to 10

<script>
  for (var i = 1; i <= 10; i++) {
    document.write(i + "<br>");
  }
</script>

👉 Concept Used: for loop

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7. Program to Find Factorial of a Number

<script>
  var num = 5;
  var fact = 1;

  for (var i = 1; i <= num; i++) {
    fact = fact * i;
  }

  document.write("Factorial = " + fact);
</script>

👉 Concept Used: loop, multiplication

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8. Program to Display Array Elements

<script>
  var fruits = ["Apple", "Banana", "Mango"];

  for (var i = 0; i < fruits.length; i++) {
    document.write(fruits[i] + "<br>");
  }
</script>

👉 Concept Used: array, loop

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9. Program to Display Current Date

<script>
  var today = new Date();
  document.write("Today Date: " + today.toDateString());
</script>

👉 Concept Used: Date object

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10. Program Using Function to Add Two Numbers

<script>
  function add(a, b) {
    return a + b;
  }

  var result = add(10, 20);
  document.write("Result = " + result);
</script>

👉 Concept Used: function, return statement