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JavaScript - sort array by multiple numeric fields (descending order)
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In this article, we would like to show you how to sort an array by multiple numeric fields in JavaScript.
Quick solution:
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// sort by 2 properties2
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array.sort((a, b) => b.property1 - a.property1 || b.property2 - a.property2);or:
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// sort by 3 properties2
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array.sort((a, b) => b.property1 - a.property1 ||4
b.property2 - a.property2 ||5
b.property3 - a.property3 );
In this example, we present a reusable arrow function that sorts multiple numeric fields in ascending order by multiple getters provided by the spread syntax (...).
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const sortArray = (array, getters) => {2
if (getters.length === 0) {3
throw new Error('Getters are not defined.');4
}5
array.sort((a, b) => {6
for (let i = 0; i < getters.length; ++i) {7
const getter = getters[0];8
const result = getter(b) - getter(a);9
if (result !== 0) {10
return result;11
}12
}13
return 0;14
});15
return array;16
};17
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// Usage example20
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const array = [22
{ number: 2, type: 1, order: 2 },23
{ number: 1, type: 1, order: 2 },24
{ number: 2, type: 2, order: 1 },25
{ number: 1, type: 2, order: 1 }26
];27
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sortArray(array, (item) => item.number, (item) => item.type, (item) => item.order);29
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console.log(JSON.stringify(array, null, 4));