![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/v2/resize:fit: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 functions map filter find reduce https://t.co/L3CmRYQMEM" / Twitter Proful Sadangi on Twitter: "Javascript array functions map filter find reduce https://t.co/L3CmRYQMEM" / Twitter](https://pbs.twimg.com/media/EfdJd2zUEAAP8aE.jpg)
Proful Sadangi on Twitter: "Javascript array functions map filter find reduce https://t.co/L3CmRYQMEM" / Twitter
![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)
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,
![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
![Simplify your JavaScript – Use .map(), .reduce(), and .filter() | by Etienne Talbot | poka-techblog | Medium Simplify your JavaScript – Use .map(), .reduce(), and .filter() | by Etienne Talbot | poka-techblog | Medium](https://cdn-images-1.medium.com/fit/t/1600/480/1*mG4yPf0dVoBk0R6csThChQ.png)