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AI solution for JavaScript Quiz on BFE.dev
8. Implicit Coercion I
The code below will output the following by console.log:
true
false
"31"
2
1
6
1
NaN
0
0
Explanation:
- Boolean('false') will output true, because the string 'false' is not empty and is therefore considered truthy.
- Boolean(false) will output false, because the boolean value false is considered falsy.
- '3' + 1 will concatenate the string '3' and the number 1 to form the string '31'.
- '3' - 1 will subtract the number 1 from the string '3' and output the number 2.
- '3' - ' 02 ' will subtract the number 2 (parsed from the string ' 02 ') from the number 3 to output the number 1.
- '3' * ' 02 ' will multiply the number 3 by the number 2 (parsed from the string ' 02 ') to output the number 6.
- Number('1') will parse the string '1' to output the number 1.
- Number('number') will output NaN (Not a Number) because the string 'number' cannot be parsed to a number.
- Number(null) will output 0 because null is considered falsy and will be converted to the number 0.
- Number(false) will output 0 because false is considered falsy and will be converted to the number 0.