sample: convert json object to table

HTML

<table id="ss"></table>

JavaScript

var obj = [{"Firstname":"Jill","Age":"50"},{"Firstname":"John","Age":"80"},{"Firstname":"Eve","Age":"94"}];

var t = document.querySelector("table");

//i: person_01, person_02, person_03
for(var i in obj) {
  var tr = t.insertRow(-1);

	//j: 名前, 住所, 電話番号, メール
	for(var j in obj[i]) {
		var td = tr.insertCell(-1);
    td.innerHTML = obj[i][j];
  }
}