JavaScript: JavaScript function to add rows to a table

Last update on April 13 2024 13:25:40 (UTC/GMT +8 hours)

JavaScript DOM: Exercise-5 with Solution

Write a JavaScript function to add rows to a table.

Sample HTML file:


<!DOCTYPE html>
<html><head>
<meta charset=utf-8 />
<title>Insert row in a table - w3resource</title>
</head><body>
<table id="sampleTable" border="1">
<tr><td>Row1 cell1</td>
<td>Row1 cell2</td></tr>
<tr><td>Row2 cell1</td>
<td>Row2 cell2</td></tr>
</table><br>
<input type="button" onclick="insert_Row()" value="Insert row"> 
</body></html>

Sample Solution:

HTML Code:

<!-- Declaration of HTML document type -->
<!DOCTYPE html> 
<!-- Start of HTML document -->
<html>
<!-- Start of head section -->
<head> 
<!-- Declaring character encoding -->
<meta charset=utf-8 /> 
<!-- Setting title of the document -->
<title>Insert row in a table - w3resource</title> 
</head>
<!-- Start of body section -->
<body> 
<!-- Table element with id 'sampleTable' and border attribute -->
<table id="sampleTable" border="1"> 
<!-- First row of the table -->
<tr><td>Row1 cell1</td> 
<td>Row1 cell2</td></tr> 
<!-- Second row of the table -->
<tr><td>Row2 cell1</td> 
<td>Row2 cell2</td></tr> 
</table><br> 
<!-- Button triggering the insert_Row function on click -->
<input type="button" onclick="insert_Row()" value="Insert row">  
<!-- End of body section -->
</body>
<!-- End of HTML document -->
</html>

JavaScript Code:

// Function declaration for insert_Row
function insert_Row()
{
    // Getting reference to the table with id 'sampleTable' and inserting a new row at index 0
    var x=document.getElementById('sampleTable').insertRow(0);
    // Inserting a new cell in the newly inserted row at index 0
    var y = x.insertCell(0);
    // Inserting a new cell in the newly inserted row at index 1
    var z = x.insertCell(1);
    // Setting inner HTML content of the first newly inserted cell
    y.innerHTML="New Cell1";
    // Setting inner HTML content of the second newly inserted cell
    z.innerHTML="New Cell2";
}

Output:

Flowchart:

Live Demo:

See the Pen javascript-dom-exercise-5 by w3resource (@w3resource) on CodePen.

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