How to sort correctly arrays in JavaScript?

Today we're going to look at how to sort arrays (and numbered arrays) in JavaScript. Finally, we'll see how to sort arrays containing objects by adding an attribute, such as priority or order, to display these objects in the desired order.

Array.prototype.sort() is a comparison function used to sort elements of an array.

The arguments of this function are:

  • compareFunction(a, b) < 0: a comes before b

  • compareFunction(a, b) > 0: b comes before a

  • compareFunction(a, b) = 0: the order of a and b is identical.

Examples (descending and ascending sorting):

Descending

const array = [1, 20, 8, 15, 25, 80, 100, 200];
// sort in descending order
array.sort((a, b) => b - a);
console.log(array);jav

Ascending

const array = [1, 20, 8, 15, 25, 80, 100, 200];
// sort in ascending order
array.sort((a, b) => a - b);
console.log(array);

Happy, happy coding! ⚡️

👉 See my other projects on GitHub https://github.com/pH-7 💡

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Pierre-Henry Soria
Pierre-Henry Soria

I'm Pierre-Henry Soria. A passionate full stack engineer, building things that matter, making a real impact on the world. Really like to take care of others and manage my workflow based on productivity methodologies. Open to fast-paced changes with rapidly evolving business and technologies. I'm always thirsty to learn and undertake new exciting things and thrilling challenges.