![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
![Joel Thoms 🍻 #JavaScript 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 Joel Thoms 🍻 #JavaScript 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](https://pbs.twimg.com/media/EHK8M62WoAAUuCt.png)
Joel Thoms 🍻 #JavaScript 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
![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)