Reference

• Mozilla Developer Network
• Underscore.js
• Lodash.js

_.uniq

Removes all duplicates entries from an array.

// Underscore/Lodash
var result = _.uniq([1, 2, 1, 4, 1, 3]);
console.log(result)
// output: [1, 2, 4, 3]
 
// Native
var result = [... new Set([1, 2, 1, 4, 1, 3])]
console.log(result)
// output: [1, 2, 4, 3]

Browser Support for new Set()

38.0 ✔	✔ 12.0	13.0 ✔	11.0 ✔	25.0 ✔	7.1 ✔