JavaScript function to check array is empty or not

To check whether an array is empty or not in JavaScript, you can use the length property of the array. If the length is 0, it means the array is empty. Here’s a simple function that checks the emptiness of an array:

function isEmptyArray(arr) {
  return arr.length === 0;
}

You can use this function by passing an array as an argument. It will return true if the array is empty and false otherwise.

Example usage:

var array1 = []; // Empty array
console.log(isEmptyArray(array1)); // Output: true

var array2 = [1, 2, 3]; // Non-empty array
console.log(isEmptyArray(array2)); // Output: false

In the above example, the isEmptyArray function takes an array (arr) as a parameter. It checks the length of the array using arr.length and compares it to 0. If the length is 0, it returns true, indicating an empty array. Otherwise, it returns false.

You can customize or extend this function based on your specific requirements.