stats.js

function computeStats(table, betMin = 0, betMax = 1000) {

	let rows = Array.prototype.slice.call(table.rows);

	let winCount = 0;
	let total = 0;

	rows.forEach((row) => {
		if (row.cells.length === 9) {

			let leftScore = Number(row.cells[3].textContent.split(' - ')[0]);
			let rightScore = Number(row.cells[3].textContent.split(' - ')[1]);

			let leftBet = Number(row.cells[5].textContent);
			let rightBet = Number(row.cells[7].textContent);

			let shouldIncrement = false

			// Left wins.
			if ((leftBet >= betMin) && (leftBet <= betMax)) {
				if ((leftScore > rightScore) && (leftBet < rightBet)) {
					winCount++;
				}	
				shouldIncrement = true
			}

			// Right wins.
			if ((rightBet >= betMin) && (rightBet <= betMax)) {
				if ((leftScore < rightScore) && (leftBet > rightBet))  {
					winCount++;
				}
				shouldIncrement = true
			}

			if (shouldIncrement) {
				total++;
			}
			
	
		}
	})

	return  [winCount/total, winCount];

}

function findBestOddsRange(minOdds = 1.1, maxOdds = 2.5) {
	let current1;
	let current2;
	let result = [];

	for (current1 = minOdds; current1 <= maxOdds; current1 += 0.1) {
		for (current2 = current1; current2 <= maxOdds; current2 += 0.1) {
			if (!result[current1]) {
				result[current1] = []
			}
			
			var [rate, count] = computeStats(document.querySelector('table'), current1, current2);

			result[current1][current2] = (rate * 100).toFixed(1) + `/ ${count}`
		}
	}

	return result

}


function exportToCsv(rows) {
	let csvContent = "data:text/csv;charset=utf-8,";
     
    csvContent += "," + Object.keys(rows).join(",") + "\r\n";

	Object.keys(rows).forEach(function(odd){
	   let row = odd + "," + Object.values(rows[odd]).join(",");
	   csvContent += row + "\r\n";
	}); 

	console.log(csvContent)
	var encodedUri = encodeURI(csvContent);
	window.open(encodedUri);
}

table(findBestOddsRange());