Many individuals commonly utilize
array.length < 1
to verify if an array is empty rather than
array.length === 0
This raises the question of whether there are scenarios in which array.length could be less than 0.
Many individuals commonly utilize
array.length < 1
to verify if an array is empty rather than
array.length === 0
This raises the question of whether there are scenarios in which array.length could be less than 0.
According to the specifications, the length of an array is always a non-negative integer.
Each Array has a "length" property that cannot be changed, and its value is a positive whole number less than 2^32.
(emphasis added)
Therefore, both the checks for array length are valid and will yield the same result in all cases.
Some may argue for using === 0 over < 1 due to performance reasons, claiming that the IsStrictlyEqual algorithm is more efficient than the IsLessThan algorithm. However, there is no concrete evidence that one method is significantly faster than the other in this specific scenario. Even if one was slightly quicker, it would require an enormous amount of comparisons to make a noticeable impact in real-world situations.
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