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Boolean Data Type and Comparison Operators

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Questions and Answers

What does the strict equality operator (===) evaluate?

Whether two operands are equal regardless of type
Only the value of two operands
Only the type of two operands
Whether two operands are identical in value and type (correct)

What will the expression 100 == '100' evaluate to?

True, as it only checks value equality (correct)
False, as the value is a string
False, due to type differences
True, since both are numbers

When is the strict inequality operator (!==) utilized?

To compare two values for equality only
To determine if two values are identical, including types (correct)
To confirm whether two values differ in value only
To check if two values are not the same regardless of type

What will the expression 1 !== '1' return?

<p>True, due to different data types (B)</p>

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Which of the following represents the correct difference between != and !==?

<p>!= checks value, while !== checks value and type (A)</p>

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Flashcards

Boolean data type

A data type that can only hold two values: true or false.

Equality operator (==)

Checks if two values are equal, ignoring data type.

Strict equality operator (===)

Checks if two values are equal and have the same data type.

Inequality operator (!=)

Checks if two values are not equal, ignoring data type.

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Strict inequality operator (!==)

Checks if two values are not equal or have different data types.

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Study Notes

Boolean Data Type

Boolean data type holds only two values: true or false.
These values result from comparisons.

Comparison Operators

Equality operator (==): Checks if two values are equal.
Example: 100 == "100" returns true.
Strict equality operator (===): Checks both value and type for equality.
Example: 100 === "100" returns false (different types).
Inequality operator (!=): Checks if two values are not equal.
Example: 1 != 1 returns false.
Strict inequality operator (!==): Checks both value and type for inequality.
Example: 1 !== "1" returns true (different types).

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