Comparisons are used to define conditions, perform checks, and make decisions in JavaScript. These operations return a boolean value (true or false), which other operators use to determine certain actions.

Comparison Operators

JavaScript offers several comparison operators for comparing values:

• Equal to (==);
• Strict Equal To (===);
• Not Equal To (!=);
• Strict Not Equal To (!==);
• Greater Than (>);
• Greater Than or Equal To (>=);
• Less Than (<);
• Less Than or Equal To (<=).

Equal and Not Equal

The Equal To operation (==) returns true if the first value equals the second value and false otherwise.

Conversely, the Not Equal To operation (!=) returns true if the values are unequal.

Example:

Note

The = operator is for assignment, while == is for comparison. Be careful to distinguish them.

Strict comparison

Strict comparison checks the types of values and values. The Strict Equal To (===) operator returns true - if both the values and their types are the same, while !== returns true if they are different.

Example:

Greater and Less

The Greater Than (>) operator returns true if the first value exceeds the second. Conversely, the Less Than (<) operator returns true if the first value is less than the second.

Example:

Greater/Less Than or Equal to

The Greater Than or Equal To (>=) and Less Than or Equal To (<=) operators combine the corresponding comparison operators with Equal To (==). They return true if either of the conditions is satisfied.

Note

The >= operator combines > and ==, not ===. The <= operator works similarly.