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Apprentice

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Boolean

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Exercises (15)

○Boolean() — truthy number
Beginner
○Boolean() — zero is falsy
Beginner
○Boolean() — empty string is falsy
Beginner
○Boolean() — non-empty string is truthy
Beginner
○Boolean() — null is falsy
Beginner
○Boolean.toString() — true gives 'true'
Beginner
○Boolean.toString() — false gives 'false'
Beginner
○Boolean.toString() — typeof result
Beginner
○Boolean.toString() — Boolean(1).toString()
Beginner
○Boolean.toString() — Boolean(0).toString()
Beginner
○Boolean.valueOf() — true.valueOf()
Beginner
○Boolean.valueOf() — false.valueOf()
Beginner
○Boolean.valueOf() — new Boolean(true).valueOf()
Beginner
○Boolean.valueOf() — new Boolean(false).valueOf()
Beginner
○Boolean.valueOf() — typeof result
Beginner