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Questions and Answers
What does the logical OR (||) operator return if x can be converted to true?
What does the logical OR (||) operator return if x can be converted to true?
How can the return value of the || operator be explicitly converted to a boolean value?
How can the return value of the || operator be explicitly converted to a boolean value?
What is the meaning of 'or' as used in logic?
What is the meaning of 'or' as used in logic?
What language does 'or' originate from?
What language does 'or' originate from?
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What is the first known use of 'or'?
What is the first known use of 'or'?
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Study Notes
Logical OR Operator
- The logical OR (||) operator returns
trueif at least one operand can be converted to true; otherwise, it returns false. - If
xcan be converted to true, the expressionx || ywill evaluate to true regardless of the value ofy.
Explicit Conversion to Boolean
- The return value of the || operator can be explicitly converted to a boolean value by using functions like Boolean() in JavaScript or by applying double negation (
!!) to the result.
Meaning of 'or' in Logic
- 'Or' in logic signifies a disjunction, indicating that at least one of the statements or propositions involved is true.
Etymology
- The word 'or' originates from Old English “ofer,” which translates to “either” or “alternatively.”
First Known Use
- The first documented use of 'or' dates back to the 14th century.
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Description
Learn about the logical OR (||) operator in JavaScript, which returns the first truthy value from a list of expressions. This operator is often used for conditional assignment and provides flexibility in handling different types of values.
