Lodash is one of the most popular open-source JavaScript libraries. It implements a lot of functional programming helpers that make everyday coding easier. It's something I use often in my own development work, and so I wanted to share with you some of the methods that I find myself using a lot. In this short post, we'll go over 15 everyday methods that, when used properly, can speed up development and make your code more readable. 1. shuffle Creates an array of shuffled values (using a version of the Fisher-Yates shuffle). import shuffle from 'lodash/shuffle';

const result = shuffle([1, 2, 3, 4, 5]);

// result => [2, 5, 1, 4, 3] 2. orderBy Creates an array of elements, sorted in the specified order by the results of running each element in a collection thru each iteratee. import orderBy from 'lodash/orderBy';

const items = [
  { name: 'Item A', price: 2 },
  { name: 'Item B', price: 8 },
  { name: 'Item C', price: 4 },
  { name: 'Item D', price: 4 }
];

const result = orderBy(items, ['price', 'name'], ['desc', 'asc']);

/*
result => [
  { name: 'Item B', price: 8 },
  { name: 'Item C', price: 4 },
  { name: 'Item D', price: 4 },
  { name: 'Item A', price: 2 }
]
*/ 3. chunk Creates an array of elements split into groups of a specified size (if the array can't be split evenly, the final chunk will only contain the remaining elements). import chunk from 'lodash/chunk';

const array = [ 1, 2, 3, 4 ];

const result = chunk(array, 2);

// result => [[1, 2], [3, 4]] 4. take Creates a slice of the array with n elements taken from the beginning. import take from 'lodash/take';

const result = take([1, 2, 3], 2);

// result => [1, 2] 5. difference Creates an array of the values not included in the other given arrays. The order and references of result values are determined by the first array. import difference from 'lodash/difference';

const result = difference([1, 2, 3], [2, 3, 4]);

// result => [1] 6. intersection Creates an array of unique values that are included in all given arrays. The order and references of result values are determined by the first array. import intersection from 'lodash/intersection';

const result = intersection([1, 2, 3], [2, 3, 4]);

// result => [2, 3] 7. isEmpty Checks if the value is an empty object, collection, map, or set (objects are considered empty if they have no own enumerable string keyed properties). import isEmpty from 'lodash/isEmpty';

isEmpty({});
// => true

isEmpty({ name: 'John Doe' });
// => false 8. throttle Creates a throttled function that only invokes the passed function at most once per every interval, specified in milliseconds. import throttle from 'lodash/throttle';

const throttled = throttle(() => {
  console.log('Throttled after 50ms!');
}, 50);

window.addEventListener('resize', throttled); 9. debounce Creates a debounced function that delays invoking the passed function until after the specified wait time has elapsed since the last time the debounced function was invoked. import debounce from 'lodash/debounce';

const debounced = debounce(() => {
  console.log('Debounced after 400ms!');
}, 400);

window.addEventListener('resize', debounced); 10. merge Recursively merges own and inherited enumerable string keyed properties of source objects into the destination object. import merge from 'lodash/merge';

const firstObject = { 'A': [{ 'B': 1 }, { 'C': 2 }] };

const secondObject = { 'A': [{ 'B': 3 }, { 'D': 4 }] };

const result = merge(firstObject, secondObject);

// result => { A: [{ B: 3 }, { C: 2, D: 4 }] } 11. cloneDeep Creates a deep clone of a specified value. import cloneDeep from 'lodash/cloneDeep';

const items = [
  { name: 'Item A' },
  { name: 'Item B' },
];

const result = cloneDeep(items);

// result[0] === items[0] => false 12. startCase Converts a string to start case (the first letter of each word capitalized). import startCase from 'lodash/startCase';

startCase('--foo-bar--');
// => 'Foo Bar'

startCase('fooBar');
// => 'Foo Bar'

startCase('__FOO_BAR__');
// => 'FOO BAR' 13. kebabCase Converts a string to kebab case (punctuation is removed, the text is converted to lowercase, and spaces are replaced by single dashes). import kebabCase from 'lodash/kebabCase';

kebabCase('Foo Bar');
// => 'foo-bar'

kebabCase('fooBar');
// => 'foo-bar'

kebabCase('__FOO_BAR__');
// => 'foo-bar' 14. snakeCase Converts a string to snake case (punctuation is removed, the text is converted to lowercase, and spaces are replaced by single underscores). import snakeCase from 'lodash/snakeCase';

snakeCase('Foo Bar');
// => 'foo_bar'

snakeCase('fooBar');
// => 'foo_bar'

snakeCase('--FOO-BAR--');
// => 'foo_bar' 15. camelCase Converts a string to camel case (spaces and punctuation are removed and the first letter of each word is capitalized). import camelCase from 'lodash/camelCase';

camelCase('Foo Bar');
// => 'fooBar'

camelCase('--foo-bar--');
// => 'fooBar'

camelCase('__FOO_BAR__');
// => 'fooBar' That’s all. Thanks! I hope this can help you the next time you write a JavaScript application. Lodash is a very popular open-source library that's worth checking out if you're looking for ways to build web applications faster. Lodash is one of the most popular open-source JavaScript libraries. It implements a lot of functional programming helpers that make everyday coding easier. It's something I use often in my own development work, and so I wanted to share with you some of the methods that I find myself using a lot. Lodash In this short post, we'll go over 15 everyday methods that, when used properly, can speed up development and make your code more readable. 1. shuffle Creates an array of shuffled values (using a version of the Fisher-Yates shuffle). Creates an array of shuffled values (using a version of the Fisher-Yates shuffle ). Fisher-Yates shuffle import shuffle from 'lodash/shuffle';

const result = shuffle([1, 2, 3, 4, 5]);

// result => [2, 5, 1, 4, 3] import shuffle from 'lodash/shuffle';

const result = shuffle([1, 2, 3, 4, 5]);

// result => [2, 5, 1, 4, 3] 2. orderBy Creates an array of elements, sorted in the specified order by the results of running each element in a collection thru each iteratee. Creates an array of elements, sorted in the specified order by the results of running each element in a collection thru each iteratee. import orderBy from 'lodash/orderBy';

const items = [
  { name: 'Item A', price: 2 },
  { name: 'Item B', price: 8 },
  { name: 'Item C', price: 4 },
  { name: 'Item D', price: 4 }
];

const result = orderBy(items, ['price', 'name'], ['desc', 'asc']);

/*
result => [
  { name: 'Item B', price: 8 },
  { name: 'Item C', price: 4 },
  { name: 'Item D', price: 4 },
  { name: 'Item A', price: 2 }
]
*/ import orderBy from 'lodash/orderBy';

const items = [
  { name: 'Item A', price: 2 },
  { name: 'Item B', price: 8 },
  { name: 'Item C', price: 4 },
  { name: 'Item D', price: 4 }
];

const result = orderBy(items, ['price', 'name'], ['desc', 'asc']);

/*
result => [
  { name: 'Item B', price: 8 },
  { name: 'Item C', price: 4 },
  { name: 'Item D', price: 4 },
  { name: 'Item A', price: 2 }
]
*/ 3. chunk Creates an array of elements split into groups of a specified size (if the array can't be split evenly, the final chunk will only contain the remaining elements). Creates an array of elements split into groups of a specified size (if the array can't be split evenly, the final chunk will only contain the remaining elements). import chunk from 'lodash/chunk';

const array = [ 1, 2, 3, 4 ];

const result = chunk(array, 2);

// result => [[1, 2], [3, 4]] import chunk from 'lodash/chunk';

const array = [ 1, 2, 3, 4 ];

const result = chunk(array, 2);

// result => [[1, 2], [3, 4]] 4. take Creates a slice of the array with n elements taken from the beginning. Creates a slice of the array with n elements taken from the beginning. n import take from 'lodash/take';

const result = take([1, 2, 3], 2);

// result => [1, 2] import take from 'lodash/take';

const result = take([1, 2, 3], 2);

// result => [1, 2] 5. difference Creates an array of the values not included in the other given arrays. The order and references of result values are determined by the first array. Creates an array of the values not included in the other given arrays. The order and references of result values are determined by the first array. import difference from 'lodash/difference';

const result = difference([1, 2, 3], [2, 3, 4]);

// result => [1] import difference from 'lodash/difference';

const result = difference([1, 2, 3], [2, 3, 4]);

// result => [1] 6. intersection Creates an array of unique values that are included in all given arrays. The order and references of result values are determined by the first array. Creates an array of unique values that are included in all given arrays. The order and references of result values are determined by the first array. import intersection from 'lodash/intersection';

const result = intersection([1, 2, 3], [2, 3, 4]);

// result => [2, 3] import intersection from 'lodash/intersection';

const result = intersection([1, 2, 3], [2, 3, 4]);

// result => [2, 3] 7. isEmpty Checks if the value is an empty object, collection, map, or set (objects are considered empty if they have no own enumerable string keyed properties). Checks if the value is an empty object, collection, map, or set (objects are considered empty if they have no own enumerable string keyed properties). import isEmpty from 'lodash/isEmpty';

isEmpty({});
// => true

isEmpty({ name: 'John Doe' });
// => false import isEmpty from 'lodash/isEmpty';

isEmpty({});
// => true

isEmpty({ name: 'John Doe' });
// => false 8. throttle Creates a throttled function that only invokes the passed function at most once per every interval, specified in milliseconds. Creates a throttled function that only invokes the passed function at most once per every interval, specified in milliseconds. import throttle from 'lodash/throttle';

const throttled = throttle(() => {
  console.log('Throttled after 50ms!');
}, 50);

window.addEventListener('resize', throttled); import throttle from 'lodash/throttle';

const throttled = throttle(() => {
  console.log('Throttled after 50ms!');
}, 50);

window.addEventListener('resize', throttled); 9. debounce Creates a debounced function that delays invoking the passed function until after the specified wait time has elapsed since the last time the debounced function was invoked. Creates a debounced function that delays invoking the passed function until after the specified wait time has elapsed since the last time the debounced function was invoked. import debounce from 'lodash/debounce';

const debounced = debounce(() => {
  console.log('Debounced after 400ms!');
}, 400);

window.addEventListener('resize', debounced); import debounce from 'lodash/debounce';

const debounced = debounce(() => {
  console.log('Debounced after 400ms!');
}, 400);

window.addEventListener('resize', debounced); 10. merge Recursively merges own and inherited enumerable string keyed properties of source objects into the destination object. Recursively merges own and inherited enumerable string keyed properties of source objects into the destination object. import merge from 'lodash/merge';

const firstObject = { 'A': [{ 'B': 1 }, { 'C': 2 }] };

const secondObject = { 'A': [{ 'B': 3 }, { 'D': 4 }] };

const result = merge(firstObject, secondObject);

// result => { A: [{ B: 3 }, { C: 2, D: 4 }] } import merge from 'lodash/merge';

const firstObject = { 'A': [{ 'B': 1 }, { 'C': 2 }] };

const secondObject = { 'A': [{ 'B': 3 }, { 'D': 4 }] };

const result = merge(firstObject, secondObject);

// result => { A: [{ B: 3 }, { C: 2, D: 4 }] } 11. cloneDeep Creates a deep clone of a specified value. Creates a deep clone of a specified value. import cloneDeep from 'lodash/cloneDeep';

const items = [
  { name: 'Item A' },
  { name: 'Item B' },
];

const result = cloneDeep(items);

// result[0] === items[0] => false import cloneDeep from 'lodash/cloneDeep';

const items = [
  { name: 'Item A' },
  { name: 'Item B' },
];

const result = cloneDeep(items);

// result[0] === items[0] => false 12. startCase Converts a string to start case (the first letter of each word capitalized). Converts a string to start case (the first letter of each word capitalized). start case import startCase from 'lodash/startCase';

startCase('--foo-bar--');
// => 'Foo Bar'

startCase('fooBar');
// => 'Foo Bar'

startCase('__FOO_BAR__');
// => 'FOO BAR' import startCase from 'lodash/startCase';

startCase('--foo-bar--');
// => 'Foo Bar'

startCase('fooBar');
// => 'Foo Bar'

startCase('__FOO_BAR__');
// => 'FOO BAR' 13. kebabCase Converts a string to kebab case (punctuation is removed, the text is converted to lowercase, and spaces are replaced by single dashes). Converts a string to kebab case (punctuation is removed, the text is converted to lowercase, and spaces are replaced by single dashes). kebab case import kebabCase from 'lodash/kebabCase';

kebabCase('Foo Bar');
// => 'foo-bar'

kebabCase('fooBar');
// => 'foo-bar'

kebabCase('__FOO_BAR__');
// => 'foo-bar' import kebabCase from 'lodash/kebabCase';

kebabCase('Foo Bar');
// => 'foo-bar'

kebabCase('fooBar');
// => 'foo-bar'

kebabCase('__FOO_BAR__');
// => 'foo-bar' 14. snakeCase Converts a string to snake case (punctuation is removed, the text is converted to lowercase, and spaces are replaced by single underscores). Converts a string to snake case (punctuation is removed, the text is converted to lowercase, and spaces are replaced by single underscores). snake case import snakeCase from 'lodash/snakeCase';

snakeCase('Foo Bar');
// => 'foo_bar'

snakeCase('fooBar');
// => 'foo_bar'

snakeCase('--FOO-BAR--');
// => 'foo_bar' import snakeCase from 'lodash/snakeCase';

snakeCase('Foo Bar');
// => 'foo_bar'

snakeCase('fooBar');
// => 'foo_bar'

snakeCase('--FOO-BAR--');
// => 'foo_bar' 15. camelCase Converts a string to camel case (spaces and punctuation are removed and the first letter of each word is capitalized). Converts a string to camel case (spaces and punctuation are removed and the first letter of each word is capitalized). camel case import camelCase from 'lodash/camelCase';

camelCase('Foo Bar');
// => 'fooBar'

camelCase('--foo-bar--');
// => 'fooBar'

camelCase('__FOO_BAR__');
// => 'fooBar' import camelCase from 'lodash/camelCase';

camelCase('Foo Bar');
// => 'fooBar'

camelCase('--foo-bar--');
// => 'fooBar'

camelCase('__FOO_BAR__');
// => 'fooBar' That’s all. Thanks! I hope this can help you the next time you write a JavaScript application. Lodash is a very popular open-source library that's worth checking out if you're looking for ways to build web applications faster.

15 Lodash methods for everyday coding

About Author

Comments

TOPICS

THIS ARTICLE WAS FEATURED IN

Related Stories

5 React Frameworks That Could Help You Speed Up Dev Time

10 Resources That’ll Make You Better At Dashboard Creation

10+ Ridiculously Cool Admin Themes And Templates

10 Reasons Why Front End Development Is a Great Career Choice

10 Reasons To Use TailwindCSS In Your Next Project

Top 10 JavaScript Charting Libraries for Every Data Visualization Need

5 React Frameworks That Could Help You Speed Up Dev Time

10 Resources That’ll Make You Better At Dashboard Creation

10+ Ridiculously Cool Admin Themes And Templates

10 Reasons Why Front End Development Is a Great Career Choice

10 Reasons To Use TailwindCSS In Your Next Project

Top 10 JavaScript Charting Libraries for Every Data Visualization Need

Light-Mode

Classic

Newspaper

Minty

Dark-Mode

Neon Noir

Minty

HN StartUps