Comparative operators are a collection of binary operators that always return Boolean derived from a comparison between the two operands:

• Abstract equality (a == b)
• Abstract inequality (a != b)
• Strict equality (a === b)
• Strict inequality (a !== b)
• Greater than (a > b)
• Greater than or equal to (a >= b)
• Less than (a < b)
• Less than or equal to (a <= b)
• Instance of (a instanceof b)
• In (a in b)

Each of these operators has slightly different functions and coercive behavior so it's useful to go through each of them individually.