JSFiddle - React, Tailwind, and code Playground
JavaScript
var oSelectedRows = {
"aFirstColumns":[2, 11, 3].sort(function(a,b){return a-b;}), //результат по строкам
"aFirstRows":[11, 23, 29, 30, 13, 14, 26].sort(function(a,b){return a-b;}), //результат по колонкам
"oRows":{
"2":{
"aColumnsIndexes":[11],
"aRowsIndexes":[23, 24.0]
}
}
}