Created
May 28, 2019 15:52
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| const $ = selector => document.querySelector(selector) | |
| const $$ = selector => document.querySelectorAll(selector) | |
| // $ returns a node (or null) | |
| $('.nav').classList.add('open') | |
| // $$ returns a NodeList (which is empty if no matching elements are found) | |
| $$('ul > li > a').forEach($node => $node.style.background = 'red') |
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