Which operator is used for strict comparison in JavaScript?

In JavaScript, the strict comparison operator is represented by three equal signs: ===. This operator checks for both value and type equality, meaning that it will only return true if the two values being compared are of the same type and have the same value. For example, using === to compare a number and a string, such as 5 === '5', will yield false because, although they may appear equal, they are of different types (number vs string).

This behavior contrasts with the loose equality operator, represented by just two equal signs (==), which performs type coercion if the values being compared are of different types. For instance, using == with the same example would return true, as it converts the string '5' into the number 5 before comparing.

Understanding the difference between strict (===) and loose (==) comparison is crucial for avoiding unexpected results in JavaScript code. Hence, the correct answer emphasizes the importance of type safety when comparing values, which is effectively managed by the strict comparison operator.