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Julia Muiruri
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2-js-basics/4-arrays-loops/README.md
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> Sketchnote by [Tomomi Imura](https://twitter.com/girlie_mac)
## Pre-Lecture Quiz
[Pre-lecture quiz](https://calm-wave-0d1a32b03.1.azurestaticapps.net/quiz/13)
[Pre-lecture quiz](https://ashy-river-0debb7803.1.azurestaticapps.net/quiz/13)
This lesson covers the basics of JavaScript, the language that provides interactivity on the web. In this lesson, you'll learn about arrays and loops, which are used to manipulate data.
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There are other ways of looping over arrays other than for and while loops. There are [forEach](https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Array/forEach), [for-of](https://developer.mozilla.org/docs/Web/JavaScript/Reference/Statements/for...of), and [map](https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Array/map). Rewrite your array loop using one of these techniques.
## Post-Lecture Quiz
[Post-lecture quiz](https://calm-wave-0d1a32b03.1.azurestaticapps.net/quiz/14)
[Post-lecture quiz](https://ashy-river-0debb7803.1.azurestaticapps.net/quiz/14)
## Review & Self Study