![Functional Programming in JS: map, filter, reduce (Pt. 5) | by Omer Goldberg | HackerNoon.com | Medium Functional Programming in JS: map, filter, reduce (Pt. 5) | by Omer Goldberg | HackerNoon.com | Medium](https://miro.medium.com/max/1024/1*FRAwpLpaqSMBV6VOHY_Vdw.png)
Functional Programming in JS: map, filter, reduce (Pt. 5) | by Omer Goldberg | HackerNoon.com | Medium
![An Illustrated (and Musical) Guide to Map, Reduce, and Filter Array Methods | CSS-Tricks - CSS-Tricks An Illustrated (and Musical) Guide to Map, Reduce, and Filter Array Methods | CSS-Tricks - CSS-Tricks](https://i0.wp.com/css-tricks.com/wp-content/uploads/2019/03/arrays-02.png?ssl=1)
An Illustrated (and Musical) Guide to Map, Reduce, and Filter Array Methods | CSS-Tricks - CSS-Tricks
![An Illustrated (and Musical) Guide to Map, Reduce, and Filter Array Methods | CSS-Tricks - CSS-Tricks An Illustrated (and Musical) Guide to Map, Reduce, and Filter Array Methods | CSS-Tricks - CSS-Tricks](https://i0.wp.com/css-tricks.com/wp-content/uploads/2019/03/arrays-01.png?ssl=1)
An Illustrated (and Musical) Guide to Map, Reduce, and Filter Array Methods | CSS-Tricks - CSS-Tricks
![An Illustrated (and Musical) Guide to Map, Reduce, and Filter Array Methods | CSS-Tricks - CSS-Tricks An Illustrated (and Musical) Guide to Map, Reduce, and Filter Array Methods | CSS-Tricks - CSS-Tricks](https://i0.wp.com/css-tricks.com/wp-content/uploads/2019/03/arrays-map.png?fit=1200%2C600&ssl=1)
An Illustrated (and Musical) Guide to Map, Reduce, and Filter Array Methods | CSS-Tricks - CSS-Tricks
![JavaScript Array for Interviews: filter, map, reduce and isArray | by Manan Kumar Gupta | JavaScript in Plain English JavaScript Array for Interviews: filter, map, reduce and isArray | by Manan Kumar Gupta | JavaScript in Plain English](https://miro.medium.com/max/800/0*8-TfcBIfDjDOP-k6.png)
JavaScript Array for Interviews: filter, map, reduce and isArray | by Manan Kumar Gupta | JavaScript in Plain English
![Proful Sadangi on Twitter: "#javascript array function - map : return an array with transformed elements - filter : returned an filtered array based on conditions - find : return first element Proful Sadangi on Twitter: "#javascript array function - map : return an array with transformed elements - filter : returned an filtered array based on conditions - find : return first element](https://pbs.twimg.com/media/EfdJd2zUEAAP8aE.jpg)
Proful Sadangi on Twitter: "#javascript array function - map : return an array with transformed elements - filter : returned an filtered array based on conditions - find : return first element
![Joel Thoms 🍻 on Twitter: "💡TIP: filter and then map will loop through the array twice. This may (or may not) have a performance impact. To loop through the list one time, Joel Thoms 🍻 on Twitter: "💡TIP: filter and then map will loop through the array twice. This may (or may not) have a performance impact. To loop through the list one time,](https://pbs.twimg.com/media/EHK8M62WoAAUuCt.png)