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<!DOCTYPE html> <html> <head> <script src="https://ajax.googleapis.com/ajax/libs/jquery/1.11.2/jquery.min.js"></script> <style> .emptyCSS{ } .redTxt { color: red; } .grnTxt { color: green; } </style> <script> $(document).ready(function () { $("button").click(function () { $("div.emptyCSS").addClass('redTxt'); $("p").addClass('grnTxt'); }); }); </script> </head> <body> <h1>jQuery Manipulation Methods: addClass()</h1> <div class="emptyCSS">This is a div tag</div> <p>This is a paragraph 1</p> <p>This is a paragraph 2</p> <button>Click Here to test .addClass()</button> </body> </html>
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