How can you check if a variable is an array in JavaScript?

In JavaScript, you can check if a variable is an array using the Array.isArray() method. This method returns true if the passed argument is an array, and false otherwise.

Here’s an example:

const _arr = [1, 2, 3];

if (Array.isArray(_arr)) {
  console.log("I am an array!");
} else {
  console.log("I am not an array!");
}

Output:

I am an array!

In this example, the Array.isArray() method is used to check if _arr is an array. Since _arr is indeed an array, the method returns true, and the output is “I am an array!“.

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