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JavaScript - detect if argument is array instead of object
1 answers
0 points
How can I check if the argument is an array because typeof [] returns 'object' and I want to distinguish those two?
Example:
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console.log(typeof []); // Output: 'object'2
console.log(typeof {}); // Output: 'object' 1 answer
0 points
The easiest way to distinguish arrays from objects is to use isArray() method or typeof operator.
Practical examples
1. Using isArray() method
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console.log(Array.isArray([])); // true2
console.log(Array.isArray({})); // false2. Using typeof operator
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console.log([] instanceof Array); // true2
console.log({} instanceof Array); // false
See also
References
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