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var whiteList = ["rowspan", "colspan"];
[...document.querySelectorAll("table")].forEach(table => {
rmAttr(table);
[...table.querySelectorAll("tr")].forEach(tr => {
rmAttr(tr);
[...tr.querySelectorAll("td")].forEach(td => {
rmAttr(td);
});
});
console.log(table.outerHTML);
});
function rmAttr(dom) {
[...dom.attributes].forEach(attr => {
if (!~whiteList.indexOf(attr.name)) {
dom.removeAttribute(attr.name);
}
});
}