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<!DOCTYPE html> <html lang="en"> <head> <meta charset="utf-8"> <meta http-equiv="X-UA-Compatible" content="IE=edge"> <meta name="viewport" content="width=device-width, initial-scale=1"> <title>Creating Bootstrap 3 Collapsible Element via Data Attributes</title> <link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/css/bootstrap.min.css"> <script src="https://ajax.googleapis.com/ajax/libs/jquery/1.12.4/jquery.min.js"></script> <script src="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/js/bootstrap.min.js"></script> <style type="text/css"> p{ background: #F9F9F9; border: 1px solid #E1E1E8; margin: 10px 0; padding: 8px; } .bs-example{ margin: 20px; } </style> </head> <body> <div class="bs-example"> <!-- Trigger Button HTML --> <input type="button" class="btn btn-primary" data-toggle="collapse" data-target="#toggleDemo" value="Toggle Button"> <!-- Collapsible Element HTML --> <div id="toggleDemo" class="collapse in"><p>This is a simple example of expanding and collapsing individual element via data attribute. Click on the <b>Toggle Button</b> button to see the effect.</p></div> </div> </body> </html>