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  • License MIT

Fast and powerful array sorting. Sort an array of objects by one or more properties. Any number of nested properties or custom comparison functions may be used.

Package Exports

  • array-sort

This package does not declare an exports field, so the exports above have been automatically detected and optimized by JSPM instead. If any package subpath is missing, it is recommended to post an issue to the original package (array-sort) to support the "exports" field. If that is not possible, create a JSPM override to customize the exports field for this package.

Readme

array-sort NPM version

Fast and powerful array sorting. Sort an array of objects by one or more properties. Any number of nested properties or custom comparison functions may be used.

Install

Install with npm

$ npm i array-sort --save

Usage

Sort an array by the given object property:

var arraySort = require('array-sort');

arraySort([{foo: 'y'}, {foo: 'z'}, {foo: 'x'}], 'foo');
//=> [{foo: 'x'}, {foo: 'y'}, {foo: 'z'}]

Reverse order

arraySort([{foo: 'y'}, {foo: 'z'}, {foo: 'x'}], 'foo', {reverse: true});
//=> [{foo: 'z'}, {foo: 'y'}, {foo: 'x'}]

Table of contents

(Table of contents generated by verb)

Params

arraySort(array, comparisonArgs);
  • array: {Array} The array to sort
  • comparisonArgs: {Function|String|Array}: One or more functions or object paths to use for sorting.

Examples

Sort blog posts

var arraySort = require('array-sort');

var posts = [
  { path: 'c.md', locals: { date: '2014-01-09' } },
  { path: 'a.md', locals: { date: '2014-01-02' } },
  { path: 'b.md', locals: { date: '2013-05-06' } },
];

// sort by `locals.date`
console.log(arraySort(posts, 'locals.date'));

// sort by `path`
console.log(arraySort(posts, 'path'));

Sort by multiple properties

var arraySort = require('array-sort');

var posts = [
  { locals: { foo: 'bbb', date: '2013-05-06' }},
  { locals: { foo: 'aaa', date: '2012-01-02' }},
  { locals: { foo: 'ccc', date: '2014-01-02' }},
  { locals: { foo: 'ccc', date: '2015-01-02' }},
  { locals: { foo: 'bbb', date: '2014-06-01' }},
  { locals: { foo: 'aaa', date: '2014-02-02' }},
];

// sort by `locals.foo`, then `locals.date`
var result = arraySort(posts, ['locals.foo', 'locals.date']);

console.log(result);
// [ { locals: { foo: 'aaa', date: '2012-01-02' } },
//   { locals: { foo: 'aaa', date: '2014-02-02' } },
//   { locals: { foo: 'bbb', date: '2013-05-06' } },
//   { locals: { foo: 'bbb', date: '2014-06-01' } },
//   { locals: { foo: 'ccc', date: '2014-01-02' } },
//   { locals: { foo: 'ccc', date: '2015-01-02' } } ]

Custom function

If custom functions are supplied, array elements are sorted according to the return value of the compare function. See the docs for Array.sort() for more details.

var arr = [
  {one: 'w', two: 'b'},
  {one: 'z', two: 'a'},
  {one: 'x', two: 'c'},
  {one: 'y', two: 'd'},
];

function compare(prop) {
  return function (a, b) {
    return a[prop].localeCompare(b[prop]);
  };
}

var result = arraySort(arr, function (a, b) {
  return a.two.localeCompare(b.two);
});

console.log(result);
// [ { one: 'z', two: 'a' },
//   { one: 'w', two: 'b' },
//   { one: 'x', two: 'c' },
//   { one: 'y', two: 'd' } ]

Multiple custom functions

var arr = [
  {foo: 'w', bar: 'y', baz: 'w'},
  {foo: 'x', bar: 'y', baz: 'w'},
  {foo: 'x', bar: 'y', baz: 'z'},
  {foo: 'x', bar: 'x', baz: 'w'},
];

// reusable compare function
function compare(prop) {
  return function (a, b) {
    return a[prop].localeCompare(b[prop]);
  };
}

// the `compare` functions can be a list or array
var result = arraySort(arr, compare('foo'), compare('bar'), compare('baz'));

console.log(result);
// [ { foo: 'w', bar: 'y', baz: 'w' },
//   { foo: 'x', bar: 'x', baz: 'w' },
//   { foo: 'x', bar: 'y', baz: 'w' },
//   { foo: 'x', bar: 'y', baz: 'z' } ]
  • get-value: Use property paths ( a.b.c) to get a nested value from an object.
  • sort-asc: Sort array elements in ascending order.
  • sort-desc: Sort array elements in descending order.
  • set-value: Create nested values and any intermediaries using dot notation ('a.b.c') paths.
  • sort-object: Sort the keys in an object.

Running tests

Install dev dependencies:

$ npm i -d && npm test

Contributing

Pull requests and stars are always welcome. For bugs and feature requests, please create an issue

Author

Jon Schlinkert

License

Copyright © 2015 Jon Schlinkert Released under the MIT license.

This file was generated by verb-cli on July 18, 2015.