In this article, you will learn how to dynamically add and remove rows from an HTML table using JavaScript. The example provided below demonstrates how to utilize pure JavaScript for adding and deleting rows within an HTML table.
Throughout this post, you will be guided with step-by-step examples and illustrated instructions on how to dynamically insert new rows into the table. By the end of this article, you will possess the skills necessary to craft your own customized JavaScript code.
If you are a beginner or are in the process of learning JavaScript, it's essential not to overlook this article. It contains comprehensive programming examples accompanied by visuals, catering to the needs of beginners who require complete programming examples with detailed explanations rather than just snippets of code.
Here's an example table that allows users to edit and remove rows, and also provides an option to append data using the "Add" button.
The objective is to enable the addition of rows dynamically to an HTML table when the user clicks the "Add" button. Following the addition of rows, users can input text values into each row and column.
Dynamically add/remove rows in html table using JavaScript
You can see in the below image that here we have created HTML tables using bootstrap with delete ,edit icons and options for adding a new row in the table. Onclick of button we are adding data in HTML table dynamically using JavaScript.
<!DOCTYPE html>
<html>
<head>
<title>How to add data in HTML table dynamically using JavaScript</title>
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.4.1/css/bootstrap.min.css">
<link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/font-awesome/4.7.0/css/font-awesome.min.css" />
</head>
<body>
<div class="container">
<h1>How to add/remove data in HTML table dynamically using JavaScript</h1>
<br />
<fieldset>
<legend>
User List
</legend>
<table class="table">
<thead>
<tr>
<th>Id</th>
<th>First Name</th>
<th>Last Name</th>
<th>Email</th>
<th>Action</th>
</tr>
</thead>
<tbody id="tblbody">
<tr id="1">
<td class="td-data">1</td>
<td class="td-data">George</td>
<td class="td-data">Bluth</td>
<td class="td-data">george.bluth@reqres.in</td>
<td class="td-data">
<button class="btn btn-info btn-xs" onclick="showEditRow()">Edit</button>
<button class="btn btn-danger btn-xs" onclick="deleteRow()">Delete</button>
</td>
</tr>
<tr id="2">
<td class="td-data">2</td>
<td class="td-data">Janet</td>
<td class="td-data">Weaver</td>
<td class="td-data">janet.weaver@reqres.in</td>
<td class="td-data">
<button class="btn btn-info btn-xs btn-editcustomer" onclick="showEditRow()">Edit</button>
<button class="btn btn-danger btn-xs btn-deleteCustomer" onclick="deleteRow()">Delete</button>
</td>
</tr>
<tr id="3">
<td class="td-data">3</td>
<td class="td-data">Emma</td>
<td class="td-data">Wong</td>
<td class="td-data">emma.wong@reqres.in</td>
<td class="td-data">
<button class="btn btn-info btn-xs btn-editcustomer" onclick="showEditRow()">Edit</button>
<button class="btn btn-danger btn-xs btn-deleteCustomer" onclick="deleteRow()">Delete</button>
</td>
</tr>
<tr id="4">
<td class="td-data">4</td>
<td class="td-data">Eve</td>
<td class="td-data">Holt</td>
<td class="td-data">eve.holt@reqres.in</td>
<td class="td-data">
<button class="btn btn-info btn-xs btn-editcustomer" onclick="showEditRow()">Edit</button>
<button class="btn btn-danger btn-xs btn-deleteCustomer" onclick="deleteRow()">Delete</button>
</td>
</tr>
<tr id="5">
<td class="td-data">5</td>
<td class="td-data">Charles</td>
<td class="td-data">Morris</td>
<td class="td-data">charles.morris@reqres.in</td>
<td class="td-data">
<button class="btn btn-info btn-xs btn-editcustomer" onclick="showEditRow()">Edit</button>
<button class="btn btn-danger btn-xs btn-deleteCustomer" onclick="deleteRow()">Delete</button>
</td>
</tr>
<tr id="6">
<td class="td-data">6</td>
<td class="td-data">Tracey</td>
<td class="td-data">Ramos</td>
<td class="td-data">tracey.ramos@reqres.in</td>
<td class="td-data">
<button class="btn btn-info btn-xs btn-editcustomer" onclick="showEditRow()">Edit</button>
<button class="btn btn-danger btn-xs btn-deleteCustomer" onclick="deleteRow()">Delete</button>
</td>
</tr>
<tr>
<td class="td-data"></td>
<td class="td-data"><input type="text" id="txtfirst_name" placeholder="first name.."></td>
<td class="td-data">
<input type="text" id="txtlast_name" placeholder="last name..">
</td>
<td class="td-data"><input type="email" id="txtemail" placeholder="email.."></td>
<td class="td-data">
<button id="btnaddCustomer" onclick="addRow()" class="btn btn-success"><i class="fa fa-plus-circle" aria-hidden="true"></i> Add</button>
</td>
</tr>
</tbody>
</table>
</fieldset>
</div>
</body>
</html>
<script type="text/javascript">
function CreateUniqueID() {
const ID = Date.now();
return ID;
}
function addRow() {
event.preventDefault()
var rowID = CreateUniqueID();
var txtfirst_name = document.getElementById("txtfirst_name").value;
if (!txtfirst_name) {
alert('Please enter name!')
return false;
}
var txtlast_name = document.getElementById("txtlast_name").value;
if (!txtlast_name) {
alert('Please enter last name!')
return false;
}
var email = document.getElementById("txtemail").value;
if (!email) {
alert('Please enter email!')
return false;
}
var emailfilter = /^(([^<>()\[\]\\.,;:\s@"]+(\.[^<>()\[\]\\.,;:\s@"]+)*)|(".+"))@((\[[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}])|(([a-zA-Z\-0-9]+\.)+[a-zA-Z]{2,}))$/;
if (!emailfilter.test(email)) {
alert('Please enter a valid email address!');
return false;
}
var tableRow = "<tr Id='" + rowID + "'>"
+ "<td class='td-data'>" + rowID + "</td>"
+ "<td class='td-data'>" + txtfirst_name+ "</td>"
+ "<td class='td-data'>" + txtlast_name+ "</td>"
+ "<td class='td-data'>" + email+ "</td>"
+ "<td class='td-data'>" +
"<button class='btn btn-info btn-xs btn-editcustomer' onclick='showEditRow()'>Edit</button>" +
"<button class='btn btn-danger btn-xs btn-deleteCustomer' onclick='deleteRow()'>Delete</button>"
+ "</td>"
+ "</tr>";
var body = document.getElementById('tblbody');
var rows = body.rows
// pick the last and prepend
rows[rows.length - 1].insertAdjacentHTML('beforebegin', tableRow)
document.getElementById('txtfirst_name').value = "";
document.getElementById('txtlast_name').value = "";
document.getElementById('txtemail').value = "";
};
function insert_Row(button) {
}
function showEditRow() {
debugger;
var rowdataId = event.target.parentNode.parentNode.id;
//this gives id of tr whose button was clicked
/*returns array of all elements with "td-data"" class within the row with given id*/
var data = document.getElementById(rowdataId).querySelectorAll(".td-data");
var ID = data[0].innerHTML;
var name = data[1].innerHTML;
var lastname = data[2].innerHTML;
var email = data[3].innerHTML;
data[0].innerHTML = '<input name="txtupdate_ID" disabled id="txtupdate_ID" value="' + ID + '"/>';
data[1].innerHTML = '<input name="txtupdate_Name" id="txtupdate_Name" value="' + name + '"/>';
data[2].innerHTML = '<input name="txtupdate_lastname" id="txtupdate_lastname" value="' + lastname + '"/>';
data[3].innerHTML = '<input name="txtupdate_email" id="txtupdate_email" value="' + email + '"/>';
data[4].innerHTML =
"<button class='btn btn-primary btn-xs btn-updateCustomer' onclick='updateData()'>" +
"Update</button>"
+ "<button class='btn btn-warning btn-xs btn-cancelupdate' onclick='cancelUpdate()'>Cancel</button>"
+ "<button class='btn btn-danger btn-xs btn-deleteCustomer' onclick='deleteRow()'>"
+ "Delete</button>"
}
function cancelUpdate() {
var rowdataId = event.target.parentNode.parentNode.id;
var dataRow = document.getElementById(rowdataId); //this gives tr of whose button was clicked
var trRow = dataRow.querySelectorAll(".td-data");
var Name = trRow[1].querySelectorAll("#txtupdate_Name")[0].value;
var lastname = trRow[2].querySelectorAll("#txtupdate_lastname")[0].value;
var email = trRow[3].querySelectorAll("#txtupdate_email")[0].value;
trRow[0].innerHTML = rowdataId;
trRow[1].innerHTML = Name;
trRow[2].innerHTML = lastname;
trRow[3].innerHTML = email;
var actionbtn = "<button class='btn btn-info btn-xs' onclick='showEditRow()'>Edit</button>" +
"<button class='btn btn-danger btn-xs' onclick='deleteRow()'>Delete</button>"
trRow[4].innerHTML = actionbtn;
}
function deleteRow() {
var rowdataId = event.target.parentNode.parentNode.id;
document.getElementById(rowdataId).remove();
}
function updateData() {
var rowdataId = event.target.parentNode.parentNode.id;
var dataRow = document.getElementById(rowdataId); //this gives tr of whose button was clicked
var datatr = dataRow.querySelectorAll(".td-data");
var Name = datatr[1].querySelector("#txtupdate_Name").value;
var lastname = datatr[2].querySelector("#txtupdate_lastname").value;
var email = datatr[3].querySelector("#txtupdate_email").value;
datatr[0].innerHTML = rowdataId;
datatr[1].innerHTML = Name;
datatr[2].innerHTML = lastname;
datatr[3].innerHTML = email;
var actionbtn = "<button class='btn btn-info btn-xs' onclick='showEditRow()'>Edit</button>" +
"<button class='btn btn-danger btn-xs' onclick='deleteRow()'>Delete</button>"
datatr[4].innerHTML = actionbtn;
}
</script>- CreateUniqueID: Generates a unique ID based on the current timestamp.
- addRow: Adds a new row to the table when the "Add" button is clicked. It retrieves input values from the user and validates them before appending the new row.
- showEditRow: Handles the editing functionality. When the "Edit" button is clicked, it replaces the cell values with input fields, allowing the user to edit the data.
- cancelUpdate: Cancels the editing operation and restores the original values of the row.
- deleteRow: Deletes the row when the "Delete" button is clicked.
- updateData: Updates the row with the new data entered by the user during the editing operation.
Above code exmaple enables users to interactively manage data within the HTML table by adding, editing, and deleting rows dynamically.
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