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4. Operators
1. Arithmetic Operators Example
(+ – * / %)
Program 1: Basic Arithmetic
<script>
let a = 10, b = 3;
document.write(
"Add: " + (a + b) + "<br>" +
"Sub: " + (a - b) + "<br>" +
"Mul: " + (a * b) + "<br>" +
"Div: " + (a / b) + "<br>" +
"Mod: " + (a % b)
);
</script>
Program 2: User Input Arithmetic
<script>
let x = Number(prompt("Enter first number"));
let y = Number(prompt("Enter second number"));
alert("Sum = " + (x + y));
</script>
2. Assignment Operators Example
(= += -= *= /=)
Program 1: Assignment Variants
<script>
let a = 10;
a += 5; // a = a + 5
a -= 2;
a *= 2;
document.write(a);
</script>
Program 2: Step-by-Step Assignment
<script>
let x = 20;
x /= 4;
document.write(x);
</script>
3. Comparison Operators Example
(== === != > < >= <=)
Program 1: Equality vs Strict Equality
<script>
let a = 5;
let b = "5";
document.write(a == b + "<br>");
document.write(a === b);
</script>
Program 2: Relational Operators
<script>
let x = 10, y = 20;
document.write(x > y);
</script>
4. Logical Operators Example
(&& || !)
Program 1: AND Operator
<script>
let age = 20;
let hasID = true;
document.write(age >= 18 && hasID);
</script>
Program 2: OR and NOT
<script>
let isWeekend = false;
document.write(!isWeekend || true);
</script>
5. Increment and Decrement Operators Example
(++ –)
Program 1: Post Increment
<script>
let a = 5;
a++;
document.write(a);
</script>
Program 2: Pre Decrement
<script>
let b = 10;
--b;
document.write(b);
</script>
6. Ternary Operator Example
(condition ? value1 : value2)
Program 1: Even or Odd
<script>
let n = 7;
let result = (n % 2 === 0) ? "Even" : "Odd";
document.write(result);
</script>
Program 2: Voting Eligibility
<script>
let age = 16;
document.write(age >= 18 ? "Eligible" : "Not Eligible");
</script>
7. Bitwise Operators Example
(& | ^ ~ << >>)
Program 1: AND, OR, XOR
<script>
alert("Welcome to JavaScript!");
</script>
Program 2: Shift Operators
<script>
let x = 4;
document.write(x << 1 + "<br>");
document.write(x >> 1);
</script>