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| author | Bradley Taunt <bt@btxx.org> | 2024-06-06 08:05:12 -0400 |
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| committer | Bradley Taunt <bt@btxx.org> | 2024-06-06 08:05:12 -0400 |
| commit | 6b742c459266b18e2b375b35205ce8a6c02f0452 (patch) | |
| tree | b16fbb9a045e33dd6c97eb5ab72e6ff4d9237ea3 /posts/jsincss-parent-selector.md | |
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diff --git a/posts/jsincss-parent-selector.md b/posts/jsincss-parent-selector.md new file mode 100644 index 0000000..f6176d8 --- /dev/null +++ b/posts/jsincss-parent-selector.md @@ -0,0 +1,77 @@ +# Using Parent Selectors in CSS + +2018-12-19 + +I recently saw a Twitter thread posted by <a href="https://twitter.com/innovati/status/1068998114491678720">Tommy Hodgins</a> on implementing highly requested styling features in CSS with only a minimal amount of JavaScript. Many of his examples are great, but the `parent` selector instantly peaked my interest. + +Being able to target an element's parent always becomes a minor annoyance (since vanilla CSS does not support it) - so you always end up having to do something a little ugly like: + + + var el = document.getElementById('custom-div'); + var parent = el.closest(selectors); + + +And then add any custom styling to the parent element directly in JavaScript - or toggle a class which opens a whole other can of worms. + +## Save the day with <a href="https://www.npmjs.com/package/jsincss-parent-selector">jsincss-parent-selector</a> and <a href="https://github.com/tomhodgins/qaffeine">qaffeine</a> + +By using the `jsincss-parent-selector` and `qaffeine` plugins we can target an element's parent in CSS without breaking a sweat. Let's break it down: + +### Import the packages + + + npm install jsincss-parent-selector qaffeine + + +### HTML (ex. index.html) + +Now we add our very simple HTML skeleton: + + + <!doctype html> + <html> + <head> + <link rel="stylesheet" href="output.css"> + </head> + <body> + <header> + <main> + <h2>This is a header</h2> + </main> + </header> + </body> + <script src=output.js></script> + </html> + + +### JavaScript (ex. input.js) + + + const qaffeine = require('qaffeine') + const parent = require('jsincss-parent-selector') + + qaffeine( + { + stylesheet: {}, + rules: { + parent + } + }, + 'input.css', + 'output.js', + 'output.css' + ) + + +### CSS (ex. input.css) + + + header { + display: block; + } + main[--js-parent] { + background: blue; + } + + +Then simply run `node` against your `js` file. That's it! I would also suggest checking out Tommy's <a href="https://www.youtube.com/watch?v=rG8cLe7VbW0">video covering this topic</a> if you prefer to follow along. |