Lesson 9

Operators

Operators are special symbols that perform operations on one, two, or more operands (values or variables).

Arithmetic Operators
Assignment Operators
Comparison Operators
Logical Operators
Unary Operators
Ternary Operator

Arithmetic

Perform mathematical operations.

a + b, a - b

Assignment

Assign values to variables.

a = b, a += b

Comparison

Compare two values and return boolean.

a == b, a > b

Logical

Combine multiple conditions.

a && b, a || b

Unary

Operate on a single operand.

++a, !a

Ternary

Conditional operator (shorthand if-else).

a ? b : c

JavaScript

1let a = 10;
2let b = 3;
3
4console.log(a + b);   // 13
5console.log(a - b);   // 7
6console.log(a * b);   // 30
7console.log(a / b);   // 3.3333333333333335
8console.log(a % b);   // 1 (remainder)
9console.log(a ** b);  // 1000 (exponent)

Output

Your output will appear here...

1( )
2++ -- !
3* / %
4+ -
5< <= > >=
6== != === !==
7&&
8||
9? :
10= += -= *= /= %=

Higher precedence operators are evaluated first.

Use parentheses to change the order of evaluation.

let result = (2 + 3) * 4;

Arithmetic

+, -, *, /, %, **

Assignment

=, +=, -=, *=, /=, %=

Comparison

==, !=, ===, !==, >, <, >=, <=

Logical

&&, ||, !

Unary

++, --, !, +, -

Ternary

condition ? a : b