<html>
<head>
<script src="http://code.jquery.com/jquery-1.11.0.min.js"></script>
<script>
//Create an HTML element
function $c(tagname){
return document.createElement(tagname);
}
//The content to be executed after the document is loaded
$(document).ready(function(){
//Binds the click event of the add row button
$("#addrow").bind("click",function(){
//In the table
var tab = $("#tab");
//Create the tr element
var tr = $c("tr");
//Append the tr element to the table
tab.append(tr);
//Create td elements
var td1=$c("td");
//The contents of the td element
td1.innerHTML="insert1";
//Appends the td element for the newly appended tr
tr.appendChild(td1);
var td2=$c("td");
td2.innerHTML="insert2";
tr.appendChild(td2);
});
//Bind the click event of the delete row button
$("#deleterow").bind("click",function(){
//Get the first row of the table
var tab = $("#tab tr:eq(0)");
//Delete this trip
tab.remove();
});
});
</script>
</head>
<body>
<table border='1' id="tab">
<tr>
<td>123</td>
<td>456</td>
</tr>
</table>
</br>
<button id="addrow"> Add the line </button>
<button id="deleterow"> Delete rows </button>
</body>
</html>