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Lodash _.isArray

Overview

The lodash _.isArray method is a utility function which is included in the Lodash library. It is used to check if a given value is an array or not. The method first checks if the value passed to it is an object and if it is, it then checks if its type is 'Array' using the toString method.

The _.isArray method takes one parameter, which is the value that needs to be checked. It returns a boolean value which indicates whether the passed value is an array (true) or not (false). If the value is null or undefined, it returns false.

The _.isArray method is often used in JavaScript programming when working with arrays. It is used as a validation method to ensure that the value being passed is an array before performing any array-specific operations on it. This helps to avoid runtime errors and ensure that the code behaves as expected.

Here's an example of using _.isArray in JavaScript:

const myArr = [1, 2, 3];

console.log(_.isArray(myArr)); // true

In this example, _.isArray is used to check if the variable myArr is an array or not. Since it is an array, _.isArray returns true.

Overall, the lodash _.isArray method is a simple and useful utility function that can be used to validate whether a given value is an array or not in JavaScript programming.