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Falah Al Fitri
Falah Al Fitri

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JavaScript Sorting Arrays

Array

The sort() method sorts an array alphabetically:

Example

const fruits = ["Banana", "Orange", "Apple", "Mango"];
fruits.sort(); // Apple,Banana,Mango,Orange
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The reverse() method reverses the elements in an array.
You can use it to sort an array in descending order:

Example

const fruits = ["Banana", "Orange", "Apple", "Mango"];
fruits.reverse(); // Orange,Mango,Banana,Apple
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Numeric Sort

By default, the sort() function sorts values as strings.

This works well for strings ("Apple" comes before "Banana").

However, if numbers are sorted as strings, "25" is bigger than "100", because "2" is bigger than "1".

Because of this, the sort() method will produce incorrect result when sorting numbers.

You can fix this by providing a compare function:

Example

const points = [40, 100, 1, 5, 25, 10];
points.sort( (a, b) => (a - b) ); // 1,5,10,25,40,100
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Use the same trick to sort an array descending:

Example

const points = [40, 100, 1, 5, 25, 10];
points.sort( (a, b) => (b - a) ); // 100,40,25,10,5,1
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Top comments (2)

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jacobgavin profile image
Jacob Gavin

Im not trying to be a dick but this post is just a copy paste from w3school... Why?

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antelove19 profile image
Falah Al Fitri

This is just to archive the code, save "the code" for me, especially

DEV

Thank you.

 
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