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<!DOCTYPE html> <html> <head> <title>Learning jQuery</title> <script src="https://ajax.googleapis.com/ajax/libs/jquery/3.6.0/jquery.min.js"></script> </head> <body> <div id="box"></div> <button>Set Dimensions</button> </body> </html>
#box{ width: 300px; height: 150px; background-color: cyan; }
$(document).ready(function(){ $("button").click(function(){ $("#box").width(400).height(300); }); });