function test(){

let icnt = 0 , t, table;

t = performance.now()

document.querySelectorAll("#sot2 > table > * > tr >td,#sot2 > table > * > tr >th").forEach((td, i) => {

icnt+=td.colSpan;

});

;

console.log('time',performance.now()-t,icnt);

icnt = 0;

t = performance.now()

table = document.querySelector("#sot2 > table");

for(const tr of table.rows){

for(const td of tr.cells){

icnt+=td.colSpan;

}

}

console.log('time',performance.now()-t,icnt);

}