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JavaScript - sorting array of objects in specific order (using existing lodash function)
1 answers
0 points
How can I sort array of objects in a specific, custom order?
I have the following array:
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const array = [2
{ key: 'a', value: 20 },3
{ key: 'd', value: 30 },4
{ key: 'c', value: 10 },5
{ key: 'b', value: 40 },6
];and I want it to be sorted in the following order by key value:
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['c', 'a', 'd', 'b']so the result would be:
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[2
{ key: 'c', value: 10 },3
{ key: 'a', value: 20 },4
{ key: 'd', value: 30 },5
{ key: 'b', value: 40 }6
]How can I do this?
1 answer
0 points
You can do it simply using lodash.
Practical examples
1. Full running example using lodash cdn:
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<html>3
<head>4
<script type="text/javascript" src="https://cdnjs.cloudflare.com/ajax/libs/lodash.js/4.17.11/lodash.min.js"></script>5
</head>6
<body>7
<script>8
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const array = [10
{ key: 'a', value: 20 },11
{ key: 'd', value: 30 },12
{ key: 'c', value: 10 },13
{ key: 'b', value: 40 },14
];15
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const customOrder = ['c', 'a', 'd', 'b'];17
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const result = _.sortBy(array, (obj) => _.indexOf(customOrder, obj.key));19
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console.log(JSON.stringify(result, null, 4));21
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</script>23
</body>24
</html>2. Working with Node.js:
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const _ = require('lodash');2
3
const array = [4
{ key: 'a', value: 20 },5
{ key: 'd', value: 30 },6
{ key: 'c', value: 10 },7
{ key: 'b', value: 40 },8
];9
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const customOrder = ['c', 'a', 'd', 'b'];11
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const result = _.sortBy(array, (obj) => _.indexOf(customOrder, obj.key));13
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console.log(JSON.stringify(result));
References
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