![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://miro.medium.com/v2/resize:fit:1400/1*mG4yPf0dVoBk0R6csThChQ.png)
Simplify your JavaScript – Use .map(), .reduce(), and .filter() | by Etienne Talbot | poka-techblog | Medium
![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)