Created
November 19, 2020 19:38
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A dataset like behavior for any attribute
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| const proxies = new WeakMap; | |
| const hyphen = name => name.replace(/([a-z])([A-Z])/g, '$1-$2'); | |
| const handler = { | |
| get: (el, name) => el.getAttribute(hyphen(name)), | |
| set: (el, name, value) => { | |
| el.setAttribute(hyphen(name), value); | |
| return true; | |
| } | |
| }; | |
| const set = el => { | |
| const proxy = new Proxy(el, handler); | |
| proxies.set(el, proxy); | |
| return proxy; | |
| }; | |
| const attr = el => proxies.get(el) || set(el); | |
| attr(document.body).itemprop = 1; | |
| attr(document.body).ariaDescribedby = 'id'; | |
| document.body.outerHTML; | |
| /* | |
| <body itemprop="1" aria-describedby="id"></body> | |
| */ |
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