Created
November 7, 2018 04:31
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Set 'focus' on any HTML element
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| <!doctype html> | |
| <meta charset="utf-8"> | |
| <title>Fauxcus</title> | |
| <nav> | |
| <li><a href="#">Home</a></li> | |
| <li><a href="#">About</a></li> | |
| <li><a href="#">Contact</a></li> | |
| </nav> | |
| <header> | |
| <h1>Page heading</h1> | |
| </header> | |
| <section> | |
| <form> | |
| <label for="input">Input</label><br /> | |
| <input type="text" id="input" /> | |
| </form> | |
| <button type="submit" id="next">Next</button> | |
| </section> | |
| <footer> | |
| <a href="#">Sitemap</a> | |
| </footer> | |
| <style> | |
| form { | |
| padding: 1em; | |
| background-color: #eee; | |
| } | |
| section { | |
| margin: 2em 0; | |
| } | |
| </style> | |
| <script> | |
| const fauxcus = (() => { | |
| const focusable = document.createElement('div'); | |
| focusable.tabIndex = 0; | |
| // TODO: Implement focus detection | |
| const isFocusable = (el) => false; | |
| return (el) => { | |
| if (!(el instanceof HTMLElement)) return; | |
| if (isFocusable(el)) return el.focus(); | |
| const { parentNode } = el; | |
| parentNode.insertBefore(focusable, el).focus(); | |
| parentNode.removeChild(focusable); | |
| }; | |
| })(); | |
| document.querySelector('form').addEventListener('submit', (e) => { | |
| e.preventDefault(); | |
| }); | |
| document.querySelector('button').addEventListener('click', (e) => { | |
| e.preventDefault(); | |
| const heading = document.querySelector('h1'); | |
| fauxcus(heading); | |
| }); | |
| </script> |
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