Create table using Javascript

This should work (from a few alterations to your code above).

function tableCreate() {
  var body = document.getElementsByTagName('body')[0];
  var tbl = document.createElement('table');
  tbl.style.width = '100%';
  tbl.setAttribute('border', '1');
  var tbdy = document.createElement('tbody');
  for (var i = 0; i < 3; i++) {
    var tr = document.createElement('tr');
    for (var j = 0; j < 2; j++) {
      if (i == 2 && j == 1) {
        break
      } else {
        var td = document.createElement('td');
        td.appendChild(document.createTextNode('\u0020'))
        i == 1 && j == 1 ? td.setAttribute('rowSpan', '2') : null;
        tr.appendChild(td)
      }
    }
    tbdy.appendChild(tr);
  }
  tbl.appendChild(tbdy);
  body.appendChild(tbl)
}
tableCreate();

Slightly shorter code using insertRow and insertCell:

function tableCreate() {
  const body = document.body,
        tbl = document.createElement('table');
  tbl.style.width = '100px';
  tbl.style.border = '1px solid black';

  for (let i = 0; i < 3; i++) {
    const tr = tbl.insertRow();
    for (let j = 0; j < 2; j++) {
      if (i === 2 && j === 1) {
        break;
      } else {
        const td = tr.insertCell();
        td.appendChild(document.createTextNode(`Cell I${i}/J${j}`));
        td.style.border = '1px solid black';
        if (i === 1 && j === 1) {
          td.setAttribute('rowSpan', '2');
        }
      }
    }
  }
  body.appendChild(tbl);
}

tableCreate();

Also, this doesn't use some "bad practices", such as setting a border attribute instead of using CSS, and it accesses the body through document.body instead of document.getElementsByTagName('body')[0];


<html>
    <head>
        <meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
        <title>Insert title here</title>
    </head>
    <body>
        <table id="myTable" cellpadding="2" cellspacing="2" border="1" onclick="tester()"></table>
        <script>
            var student;
            for (var j = 0; j < 10; j++) {
                student = {
                    name: "Name" + j,
                    rank: "Rank" + j,
                    stuclass: "Class" + j,
                };
                var table = document.getElementById("myTable");
                var row = table.insertRow(j);
                var cell1 = row.insertCell(0);
                var cell2 = row.insertCell(1);
                var cell3 = row.insertCell(2);

                cell1.innerHTML = student.name,
                cell2.innerHTML = student.rank,
                cell3.innerHTML = student.stuclass;
            }
        </script>
    </body>
</html>


function addTable() {
  var myTableDiv = document.getElementById("myDynamicTable");

  var table = document.createElement('TABLE');
  table.border = '1';

  var tableBody = document.createElement('TBODY');
  table.appendChild(tableBody);

  for (var i = 0; i < 3; i++) {
    var tr = document.createElement('TR');
    tableBody.appendChild(tr);

    for (var j = 0; j < 4; j++) {
      var td = document.createElement('TD');
      td.width = '75';
      td.appendChild(document.createTextNode("Cell " + i + "," + j));
      tr.appendChild(td);
    }
  }
  myTableDiv.appendChild(table);
}
addTable();
<div id="myDynamicTable"></div>

Tags:

Javascript

Html Table

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