add table row javascript code example

Example 1: javascript insert row at end of table

<table id="ThisTable">
  <tr><th>Head1</th><th>Head2</th><th>Head2</th></tr>
  <tr><td>Data1</td><td>Data1</td><td>Data1</td></tr>
  <tr><td>Data2</td><td>Data2</td><td>Data2</td></tr>
</table>
<script>
  var table = document.getElementById("ThisTable");
  var row = table.insertRow(-1);
  <!-- Filling the new created cell -->
  var cell1 = row.insertCell(0);
  var cell2 = row.insertCell(1);
  var cell3 = row.insertCell(2);
  cell1.innerHTML = "NEW CELL1";
  cell2.innerHTML = "NEW CELL2";
  cell3.innerHTML = "NEW CELL3";
</script>
<!-- The (-1) indexes the last position of the table -->

Example 2: javascript append to html table tr

<table id="myTable">
  <tr>
    <td>Row1 cell1</td>
    <td>Row1 cell2</td>
  </tr>
  <tr>
    <td>Row2 cell1</td>
    <td>Row2 cell2</td>
  </tr>
  <tr>
    <td>Row3 cell1</td>
    <td>Row3 cell2</td>
  </tr>
</table>
<button type="button" onclick="myFunction()">Try it</button>

<script>
function myFunction() {
  var table = document.getElementById("myTable");
  var row = table.insertRow(0);
  var cell1 = row.insertCell(0);
  var cell2 = row.insertCell(1);
  cell1.innerHTML = "NEW CELL1";
  cell2.innerHTML = "NEW CELL2";
}
</script>

Example 3: javascript dynamic table row add

<HTML>
<HEAD>
	<TITLE> Add/Remove dynamic rows in HTML table </TITLE>
	<SCRIPT language="javascript">
		function addRow(tableID) {

			var table = document.getElementById(tableID);

			var rowCount = table.rows.length;
			var row = table.insertRow(rowCount);

			var colCount = table.rows[0].cells.length;

			for(var i=0; i<colCount; i++) {

				var newcell	= row.insertCell(i);

				newcell.innerHTML = table.rows[0].cells[i].innerHTML;
				//alert(newcell.childNodes);
				switch(newcell.childNodes[0].type) {
					case "text":
							newcell.childNodes[0].value = "";
							break;
					case "checkbox":
							newcell.childNodes[0].checked = false;
							break;
					case "select-one":
							newcell.childNodes[0].selectedIndex = 0;
							break;
				}
			}
		}

		function deleteRow(tableID) {
			try {
			var table = document.getElementById(tableID);
			var rowCount = table.rows.length;

			for(var i=0; i<rowCount; i++) {
				var row = table.rows[i];
				var chkbox = row.cells[0].childNodes[0];
				if(null != chkbox && true == chkbox.checked) {
					if(rowCount <= 1) {
						alert("Cannot delete all the rows.");
						break;
					}
					table.deleteRow(i);
					rowCount--;
					i--;
				}


			}
			}catch(e) {
				alert(e);
			}
		}

	</SCRIPT>
</HEAD>
<BODY>

	<INPUT type="button" value="Add Row" onclick="addRow('dataTable')" />

	<INPUT type="button" value="Delete Row" onclick="deleteRow('dataTable')" />

	<TABLE id="dataTable" width="350px" border="1">
		<TR>
			<TD><INPUT type="checkbox" name="chk"/></TD>
			<TD><INPUT type="text" name="txt"/></TD>
			<TD>
				<SELECT name="country">
					<OPTION value="in">India</OPTION>
					<OPTION value="de">Germany</OPTION>
					<OPTION value="fr">France</OPTION>
					<OPTION value="us">United States</OPTION>
					<OPTION value="ch">Switzerland</OPTION>
				</SELECT>
			</TD>
		</TR>
	</TABLE>

</BODY>
</HTML>

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