jQuery Set Attribute Value Example

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<!DOCTYPE html>
<html lang="en">
	<head>
		<meta charset="UTF-8">
		<title>jQuery attr() Example</title>
		<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.7.1/jquery.min.js"></script>
		<style>
			body {
				font-family: Arial, sans-serif;
				padding: 30px;
				background: #f4f4f4;
			}

.updated-class {
				color: #fff;
				background: #28a745;
				padding: 10px;
				border-radius: 4px;
			}

button {
				margin-top: 20px;
				padding: 8px 15px;
				background-color: #007bff;
				color: white;
				border: none;
				border-radius: 4px;
				cursor: pointer;
			}

table {
				margin-top: 30px;
				border-collapse: collapse;
				width: 100%;
				max-width: 600px;
				background: #fff;
			}

th, td {
				border: 1px solid #ccc;
				padding: 10px;
				text-align: left;
			}

th {
				background-color: #eee;
			}
		</style>
	</head>
	<body>

<h2 id="originalId" class="original-class">Heading with Original Attributes</h2>

<button id="setAttrBtn">Update ID and Class</button>

<table>
			<tr>
				<th>Attribute</th>
				<th>Old Value</th>
				<th>New Value</th>
			</tr>
			<tr>
				<td>ID</td>
				<td id="oldIdText"></td>
				<td id="newIdText"></td>
			</tr>
			<tr>
				<td>Class</td>
				<td id="oldClassText"></td>
				<td id="newClassText"></td>
			</tr>
		</table>

// Display original attributes
				$('#oldIdText').text($el.attr('id'));
				$('#oldClassText').text($el.attr('class'));

$('#setAttrBtn').click(function(){
					// Update attributes directly (no callback)
					$el.attr('id', 'newId');
					$el.attr('class', 'updated-class');

// Update table with new values
					$('#newIdText').text($el.attr('id'));
					$('#newClassText').text($el.attr('class'));
				});
			});
		</script>

</body>
</html>

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