The lodash and UnderScore both are utility libraries from JavaScript which helps make it easier by providing utils which makes, working with arrays, numbers, objects, and strings much easier. They provide a group of tools used for common programming operations having a strong functional programming task.
Lodash: It is a JavaScript utility library that delivers consistency, modularity, and performance to its code. It provides utility functions for the basic programming tasks using the functional programming paradigm. Lodash’s API is a superset of Underscore. It provides every functionality that Underscore does, along with a few additional helpful functions such as AMD support, deep clone, and deep merge. It also provides better overall performance and optimization of larger iterables than underscore.
Underscore: Underscore is a modern JavaScript library that provides a whole mess of useful functional programming helpers without extending any built-in objects. Underscore was created by Jeremy Ashkenas.
Differences between lodash and underscore:
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Different basic commands of lodash and underscore having same functionality:
It checks if the predicate returns TRUE for any element of the collection.
- Underscore:_.any
- Lodash:_.some
It checks if the predicate returns TRUE for all elements of the collection.
- Underscore:_.all
- Lodash:_.every
It creates a function that invokes the given functions from right to left.
- Underscore:_.compose
- Lodash:_.flowRight
It looks through the list and returns the first value that matches all of the key-value pairs listed in properties.
- Underscore:_.findWhere
- Lodash:_.find
It returns a key for each element in the list and returns an object with an index of each item.
- Underscore:_.indexBy
- Lodash:_.keyBy
It calls the method named by method name on each value in the list.
- Underscore:_.invoke
- Lodash:_.invokeMap
It transforms the value of each property in turn.
- Underscore:_.mapObject
- Lodash:_.mapValues
It returns the index at which value can be found in the array, or -1 if the value is not present in the array.
- Underscore:_.indexOf
- Lodash:_.sortedIndexOf
It looks through each value in the list and returns an array of all the values that match the key-value pairs listed in properties.
- Underscore:_.where
- Lodash:_.filter
It converts an object into a list of key-value pairs.
- Underscore:_.pairs
- Lodash:_.toPairs
