Here is an example of how you create a list of fruit.

const fruits = ["Apple", "Orange", "Banana", "Pineapple"];
console.log(fruits);

Running this Node.js app should return something like this.

~]$ node app.js
[ 'Banana', 'Orange', 'Apple', 'Mango' ]

length can be used to count the number of elements in the list.

const fruits = ["Apple", "Orange", "Banana", "Pineapple"];
console.log(`There are ${fruits.length} elements in the 'fruits' list`);

Which in this example should return 4.

~]$ node app.js
There are 4 elements in the 'fruits' list

You can use an index number to do something with a specific element in the list.

const fruits = ["Apple", "Orange", "Banana", "Pineapple"];

console.log(`index 0 = ${fruits[0]}`);
console.log(`index 1 = ${fruits[1]}`);
console.log(`index 2 = ${fruits[2]}`);
console.log(`index 3 = ${fruits[3]}`);

Which should return the following.

index 0 = Apple
index 1 = Orange
index 2 = Banana
index 3 = Pineapple

You can loop through each element in the list. For more details on for loops, check out my article FreeKB - Node.js - Getting Started with for loop.

const fruits = ["Apple", "Orange", "Banana", "Pineapple"];

fruits.forEach(item => {
  console.log(item)
}

Which should return the following.

Apple
Orange
Banana
Pineapple

push can be used to append an item to a list.

const fruits = ["Apple", "Orange", "Banana", "Pineapple"];

fruits.push("Strawberry")