Operators

In programming, symbols like addition (+), subtraction (-), multiplication (×), and division (÷) are called operators.

Operators are used to process data(values) and generate new values.

1. Arithmetic Operators

Perform basic mathematical operations like addition, subtraction, multiplication, and division.

• + : addition

• - : subtraction

• * : multiplication

• / : division

• % : remainder

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let result = 5 * 3; // 5 x 3 = 15 is stored in result

2. Comparison Operators

Compare the sizes of values or variables and return a boolean value (true or false).

• == : equal (compares only values)

• === : strictly equal (compares values and data types)

• != : not equal

• !== : not strictly equal

• > : greater than

• < : less than

• >= : greater than or equal to

• <= : less than or equal to

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let isTrue = 5 > 3; // true is stored in isTrue from 5 > 3

3. Logical Operators

Combine multiple conditions to determine a single boolean value.

• && : AND - true only if both are true

• || : OR - true if at least one is true

• ! : NOT - inverts the boolean value

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let value = true && false; // false is stored in value from true && false

• Ternary Operator

Express simple conditional statements in a single line as shown below.

(condition) ? value1 : value2

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let age = 15;
let type = age >= 20 ? 'adult' : 'teen'; // "teen" is stored in type