JavaScript Array sorteer()

❮ Vorige JavaScript- skikkingverwysing Volgende ❯

Voorbeelde

Sorteer skikking:

const fruits = ["Banana", "Orange", "Apple", "Mango"];
fruits.sort();

Sorteer en keer dan die volgorde om:

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

Definisie en gebruik

Die sort()sorteer die elemente van 'n skikking.

Die sort()oorskryf die oorspronklike skikking.

Die sort()sorteer die elemente as stringe in alfabetiese en stygende volgorde.

Sien ook:

Die Array reverse() Metode

Sorteer Vergelyk funksie

Om alfabeties te sorteer werk goed vir snare ("Apple" kom voor "Piesang").

Maar sortering van getalle kan verkeerde resultate lewer.

"25" is groter as "100", want "2" is groter as "1".

Jy kan dit regstel deur 'n "vergelyk funksie" te verskaf (Sien voorbeelde hieronder).

Sintaksis

array.sort(compareFunction)

Grense

Parameter

Description

compareFunction

Optional.
A function that defines a sort order. The function should return a negative, zero, or positive value, depending on the arguments:

function(a, b){return a-b}

When sort() compares two values, it sends the values to the compare function, and sorts the values according to the returned (negative, zero, positive) value.

Example:

The sort function will sort 40 as a value lower than 100.

When comparing 40 and 100, sort() calls the function(40,100).

The function calculates 40-100, and returns -60 (a negative value).

Terugkeerwaarde

Die skikking met die items gesorteer.

Meer voorbeelde

Sorteer getalle in stygende volgorde:

const points = [40, 100, 1, 5, 25, 10];
points.sort(function(a, b){return a-b});

Sorteer getalle in dalende volgorde:

const points = [40, 100, 1, 5, 25, 10];
points.sort(function(a, b){return b-a});

Vind die laagste waarde:

const points = [40, 100, 1, 5, 25, 10];

// Sort the numbers in ascending order
points.sort(function(a, b){return a-b});

let lowest = points[0];

Vind die hoogste waarde:

const points = [40, 100, 1, 5, 25, 10];

// Sort the numbers in descending order:
points.sort(function(a, b){return b-a});

let lowest = points[0];

Vind die hoogste waarde:

const points = [40, 100, 1, 5, 25, 10];

// Sort the numbers in ascending order:
points.sort(function(a, b){return a-b});

let highest = points[points.length-1];