JavaScript Operators

By Flavio Copes

Learn how JavaScript operators combine expressions into more complex ones, from binary operators like addition to unary operators and the ternary operator.

Operators allow you to get one or more simple expressions and combine them to form a more complex expression.

We can classify operators based on the operands they work with.

Most operators work with 2 operands:

• Addition (+)
• Subtraction (-)
• Division (/)
• Remainder (%)
• Multiplication (*)
• Exponentiation (**)
• Assignment (=)
• Comparison operators (<, <= etc)
• Equality checks (==, !== etc)
• Logical and and or
• instanceof
• in

Some operators work with 1 operand:

• Increment (++)
• Decrement (--)
• Unary negation (-)
• Unary plus (+)
• Logical not (!)
• new
• delete
• typeof
• await
• The spread operator

Just one operator works with 3 operands: the ternary operator.

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