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README.md
sort-array
Sort an array of objects by any property value, at any depth, in any custom order.
Example
const sortBy = require('sort-array')
sortBy(recordset, columnNames, [customOrder]) ⇒ Array
⏏
Kind: Exported function
Param | Type | Description |
---|---|---|
recordset | Array.<object> |
Input array of objects |
columnNames | string | Array.<string> |
One or more property expressions to sort by, e.g. 'name' or 'name.first' . |
[customOrder] | object |
Custom sort order definitions. An object where each key is the property expression and the value is an array specifying the sort order. Example: { importance: [ 'speed', 'strength', 'intelligence' ]} |
Example
with this data
> DJs = [
{ name: 'Trevor', slot: 'twilight' },
{ name: 'Chris', slot: 'twilight' },
{ name: 'Mike', slot: 'afternoon' },
{ name: 'Rodney', slot: 'morning' },
{ name: 'Chris', slot: 'morning' },
{ name: 'Zane', slot: 'evening' }
]
sort by slot
using the default sort order (alphabetical)
> sortBy(DJs, 'slot')
[ { name: 'Mike', slot: 'afternoon' },
{ name: 'Zane', slot: 'evening' },
{ name: 'Chris', slot: 'morning' },
{ name: 'Rodney', slot: 'morning' },
{ name: 'Chris', slot: 'twilight' },
{ name: 'Trevor', slot: 'twilight' } ]
specify a custom sort order for slot
> const slotOrder = [ 'morning', 'afternoon', 'evening', 'twilight' ]
> sortBy(DJs, 'slot', { slot: slotOrder })
[ { name: 'Rodney', slot: 'morning' },
{ name: 'Chris', slot: 'morning' },
{ name: 'Mike', slot: 'afternoon' },
{ name: 'Zane', slot: 'evening' },
{ name: 'Trevor', slot: 'twilight' },
{ name: 'Chris', slot: 'twilight' } ]
sort by slot
then name
> sortBy(DJs, ['slot', 'name'], { slot: slotOrder })
[ { name: 'Chris', slot: 'morning' },
{ name: 'Rodney', slot: 'morning' },
{ name: 'Mike', slot: 'afternoon' },
{ name: 'Zane', slot: 'evening' },
{ name: 'Chris', slot: 'twilight' },
{ name: 'Trevor', slot: 'twilight' } ]
sort by nested property values (at any depth) using dot notation (e.g. 'inner.number'
)
> input = [
{ inner: { number: 5 } },
{ inner: { number: 2 } },
{ inner: { number: 3 } },
{ inner: { number: 1 } },
{ inner: { number: 4 } }
]
> sortBy(input, 'inner.number')
[ { inner: { number: 1 } },
{ inner: { number: 2 } },
{ inner: { number: 3 } },
{ inner: { number: 4 } },
{ inner: { number: 5 } } ]
a custom order for a nested property looks like this:
const customOrder = {
'inner.number': [ 1, 2, 4, 3, 5 ]
}
© 2015-17 Lloyd Brookes <75pound@gmail.com>. Documented by jsdoc-to-markdown.