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<!DOCTYPE html> <html> <head> <script src="/lib/jquery-1.12.2.min.js"></script> <script> $(document).ready(function(){ $("button").click(function(){ $("#p1").html("attr('checked'): " + $("input").attr('checked') + "<br>prop('checked'): " + $("input").prop('checked')); }); }); </script> </head> <body> <p><b>Note:</b> Check and uncheck the checkbox and then click the button to refresh content.</p> <button>Check value of attr() and prop()</button> <br><br> <input id="check1" type="checkbox" checked="checked"> <label for="check1">Check me</label> <p id="p1"></p> </body> </html>