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author | Joris | 2022-07-04 11:32:27 +0200 |
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committer | Joris | 2022-07-04 19:36:37 +0200 |
commit | fade87173afbfdd51534646ed49844efa2d0e530 (patch) | |
tree | 54e8d5d81233fa5f3d1ba60fd8c3085252ebccc4 /src/lib/h.ts | |
parent | ce7722c901776ae8f6a64882e902e8ba851411e0 (diff) | |
download | chords-fade87173afbfdd51534646ed49844efa2d0e530.tar.gz chords-fade87173afbfdd51534646ed49844efa2d0e530.tar.bz2 chords-fade87173afbfdd51534646ed49844efa2d0e530.zip |
Play random major and/or minor chords
Diffstat (limited to 'src/lib/h.ts')
-rw-r--r-- | src/lib/h.ts | 34 |
1 files changed, 34 insertions, 0 deletions
diff --git a/src/lib/h.ts b/src/lib/h.ts new file mode 100644 index 0000000..8b1abf3 --- /dev/null +++ b/src/lib/h.ts @@ -0,0 +1,34 @@ +type Child = Element | Text | string | number + +export default function h( + tagName: string, + attrs: object, + ...children: Child[] +): Element { + const isSvg = tagName === 'svg' || tagName === 'path' + + let elem = isSvg + ? document.createElementNS('http://www.w3.org/2000/svg', tagName) + : document.createElement(tagName) + + if (isSvg) { + Object.entries(attrs).forEach(([key, value]) => { + elem.setAttribute(key, value) + }) + } else { + elem = Object.assign(elem, attrs) + } + + for (const child of children) { + if (typeof child === 'number') + elem.append(child.toString()) + else + elem.append(child) + } + + return elem +} + +export function classNames(obj: {[key: string]: boolean }): string { + return Object.keys(obj).filter(k => obj[k]).join(' ') +} |