The strict equality ( === ) operator checks whether its two operands are equal, returning a Boolean result.
Unlike the equality operator, the strict equality operator always considers operands of different types to be different.
Relational Operators in JavaScript
Relational operators are operators that check whether a relationship between two values (like “less-than” or “property-of”) exists and deliver true or false depending on the result.
The following is a list of the JavaScript relational operators.
The question mark operator is used in JavaScript as an alternative to an if statement, especially where a value is assigned based on a conditional.