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function getDataByPath(data, path) {
path.split(".").forEach(element => data=data[element]);
return data;
}
a={
pms5003: {
pm1: 13,
"pm2.5": 21,
pm10: 22,
}
}
b='pms5003.pm2.5'
getDataByPath(a,b);
j
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