Lodash

A modern JavaScript utility library delivering modularity, performance, and extras

Underscore.js

Underscore is a utility-belt library for JavaScript that provides a lot of the functional programming support that you would expect in Prototype.js (or Ruby), but without extending any of the built-in JavaScript objects



Latest easiest features

Example

"Because lodash is updated more frequently than underscore.js a lodash underscore.js build is provided to ensure compatibility with the latest stable version of underscore.js"

from question  

Differences between lodash and underscore

"The easiest solution is to just replace underscore.js with lodash which has even more features than the latest underscore.js"

from question  

Can I Update Meteor Underscore package?

Accident composability backbone

Example

"This is apparently no accident if these are left out of underscore.js lodash composability is better than features"

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At underscore js, Can I get multiple columns with pluck method after input where method as linq select projection

"Therefore in my app backbone doesn t know if it is underscore.js or lodash as long as i am passing _ using amd;i started to use lodash just because i read lodash has better performance"

from question  

Should I use the Underscore-compatible build of Lo-Dash when using it with BackboneJS?

Details blog comment

Example

"I believe lodash is a better choice over underscore.js more details in this blog post"

from question  

Javascript: creating an array out of another

"Edit as pointed out in the comment lodash is likely to be a better solution than underscore.js"

from question  

Combine / Extend two objects with condition

Faster stunned simple

Example

"I am stunned right now seeing a lodash performing 100-150 faster than underscore.js in even simple native functions such as array.every in chrome"

from question  

Differences between lodash and underscore

"The solution from charliefl is approximately 100x faster than underscore.js depending on browser in this case and lodash being up to 2x faster than underscore.js"

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How to merge two arrays similar to underscore extend method for objects

Others

Example

Debounce.cancel is implemented only in lodash with this commit underscore.js does not implement it;if you re using underscore.js or lodash here s a quick and elegant way to solve this problem

from question  

Handling click events in Google Maps JS API v3 while ignoring double clicks

If you re using lodash the function signatures are different-- underscore.js allows you to define a this context as the third parameter whereas lodash s doesn t;so in our case our lodash was overwriting their underscore.js causing a bunch of weird issues.

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Adobe AEM form with custom javascript events throwing guideLib, guide.js, guideBridge, or guideRuntime undefined or ... is not a function

Lodash is another faster implementation of underscore.js that will provide a lot of utility methods for working wit arrays objects functions etc

from question  

Best practices and tools for a big, extendible worklight enterprise application

Lodash is more modular than underscore.js underscore.js around 5kb lodash around 17kb but is generally lighter because you only include the specific modules you need

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Best way of basically doing a `where` clause in Javascript?

Based on why lodash is faster than native foreach post maybe its s justifiable to use lodash in favour of both underscore.js and native foreach to loop

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Use underscore to change one property of objects in an array

If i remember correctly lodash argued they were faster than underscore.js because the use non-native functions for key operations

from question  

Efficiently rename/re-map javascript/json object keys within array of objects

If you re open to using lodash which is a better version of underscore.js imo this can be expressed fairly simply using flattendeep on each element of your multi-dimensional array

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Any easy way to merge, flattern and concat multiple multi-dimensional arrays in javascript in a certain way (right to left)?

Basically collections are things that implement some kind of iterable interface and they internally use the same iteration method though lodash source is a bit more convoluted than underscore.js

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Lo-Dash, difference between array and collection

You can transform data using lodash or underscore.js;here is an example built using lodash btw i added one more array element to show how groupby works

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Select values of a column in an object json then convert it to array AngularJs

Given that this is 4 years old and lodash has more or less taken the place of underscore.js i thought i would share this solution using lodash

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Merge two arrays of keys and values to an object using underscore

Underscore.js _.flatten is deep by default while lodash is shallow;underscore.js _.isfinite doesn t align with number.isfinite _.isfinite 1 returns true in underscore.js but false in

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Differences between lodash and underscore

Lodash is definitely not slower than underscore.js

from question  

Differences between lodash and underscore

There is a fantastic library called ramda which is similar to underscore.js and lodash but is more powerful

from question  

Do <something> N times (declarative syntax)

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