How do I loop through my HTML table to build a json string that will be use to update my database

<div id="demo"></div>
	function parseT24Response(data){



	const lines = data.split(',\"');
	const headerline = lines[0];
	const splitHeaderline = headerline.split('/');
	const headers = splitHeaderline.map(x => x.split('::')[1] || x.split(':')[1])
	
	const records = [];
	records.push(headers);

	for (let i = 1; i < lines.length; i++) {
		records.push(lines[i].split("\"\t\""));
	}

	

return records


}



const m = ',D.SCHEDULE.DATE::Date/D.DEFER.DATE::Defer Date/TOT.DUE::Total Due/TOT.CAP::Total Cap/TOTAL.PRINCIPAL::Principal/TOTAL.INTEREST::Interest/TOTAL.CHARGE::Charge/TOTAL.TAX::Tax/TOTAL.PAY::Total Pymt/OUTSTANDING::Outstanding,"04 SEP 2018"	"           "	"           1,000.00"	"               0.00"	"          50,000.00"	"                   "	"           1,000.00"	"                    "	"           50,000.00"	"         -50,000.00","04 OCT 2018"	"           "	"          18,183.33"	"               0.00"	"          16,633.33"	"           1,550.00"	"                   "	"                    "	"                    "	"         -33,366.67","04 NOV 2018"	"           "	"          18,183.33"	"               0.00"	"          16,683.33"	"           1,500.00"	"                   "	"                    "	"                    "	"         -16,683.34","04 DEC 2018"	"           "	"          18,183.34"	"               0.00"	"          16,683.34"	"           1,500.00"	"                   "	"                    "	"                    "	"               0.00"'

const r=parseT24Response(m)




//console.table(r);



    var table = document.createElement("table");
    var tr = document.createElement("tr");
    for(var i = 0; i <r[0].length; i++){
        var th = document.createElement("th");
        th.innerHTML = r[0][i];
        tr.appendChild(th);
    }
  
   
    table.appendChild(tr);
    for(var i = 1; i < r.length; i++){
        var tr = document.createElement("tr");
        for(var j = 0; j < r[0].length; j++){
        	var datas =  r[i][j]



        	//var k=cool(datas);  	
        
        	 

        	

        	//.log(datas);
        
            var td = document.createElement("td");
            td.innerHTML = r[i][j].replace('"', '');
           var  y= r[i][j].replace('"', '')
           
           var datass = new Array(y);
           console.log(y)

            tr.appendChild(td);
            
        }
        table.appendChild(tr);
    }
      document.getElementById("demo").appendChild(table)

      var h = table.innerHTML

  console.log (h)