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<!DOCTYPE html> <html lang="en"> <head> <meta charset="utf-8"> <title>Example of jQuery Animation with Pre-defined Values</title> <script src="https://code.jquery.com/jquery-3.6.0.min.js"></script> <style> .box{ width: 80%; height: 200px; background: #9d7ede; margin-top: 30px; } </style> <script> $(document).ready(function(){ $("button").click(function(){ $(".box").animate({ width: 'toggle' }); }); }); </script> </head> <body> <button type="button">Toggle Animation</button> <div class="box"></div> </body> </html>