​

function add() {

    var num = document.getElementById("t1").rows.length;

    console.log(num);

    var x = document.createElement("tr");

​

    var a = document.createElement("td");

    var anode = document.createTextNode(num+'.');

    a.appendChild(anode);

    x.appendChild(a);

​

    a = document.createElement("td");

    anode = document.createElement("input");

    var b = document.createAttribute("type");

    b.value = "checkbox";

    anode.setAttributeNode(b);

    a.appendChild(anode);

    x.appendChild(a);

    a = document.createElement("td");

    x.appendChild(a);

​

    a = document.createElement("td");

    anode = document.createElement("input");

    b = document.createAttribute("type");

    b.value = "text";

    anode.setAttributeNode(b);

    a.appendChild(anode);

    x.appendChild(a);

    a = document.createElement("td");

    anode = document.createElement('input');

    anode.setAttribute('type','button');

    anode.setAttribute('value','Delete Row');

  anode.setAttribute('onclick','deleteRow(this)');

    a.appendChild(anode);

    x.appendChild(a);

    document.getElementById("t1").appendChild(x);

}

​

function deleteRow(e,v) {

  var tr = e.parentElement.parentElement;

  var tbl = e.parentElement.parentElement.parentElement;

  tbl.removeChild(tr);

​

}