nub

Return all the unique elements of an array. You can specify your own uniqueness comparison function with nub.by too.
These work like haskell's nub and nubBy functions in Data.List.

$ node
> var nub = require('nub')
> nub([1,2,2,3,1,3])
[ 1, 2, 3 ]
> nub.by([ 2, 3, 5, 7, 8 ], function (x,y) { return x + y === 10 })
[ 2, 3, 5 ]

var nub = require('nub')

nub(xs)

Return a new array with all the uniqe elements in xs.
Uniqueness is calculated === style so the types matter.

nub.by(xs, cmp)

Use cmp(x,y) function to compare elements instead of the default. cmp should return whether the two elements are equal as a boolean.With npm do:

npm install nub

To use nub in the browser, use browserify or fetch a UMD build from browserify CDN.MIT