Javascript - Useful higher order Functions

https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/filter 

https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/map 

https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/sort 

https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/reduce 

https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/every 

https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/some 

https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/find 

https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/findindex