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signaes/Get All DOM nodes unique class names

Created October 1, 2020 18:44
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Get All DOM nodes unique class names
[].slice.call(document.querySelectorAll('*'))
.reduce((acc, x) => acc = x.getAttribute('class') ? acc.concat(x.getAttribute('class')) : acc, [])
.reduce((acc, x) => {
x.split(' ').forEach(c => {
if (acc.indexOf(c) === -1) {
acc.push(c);
}
});
return acc;
}, []);
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