javascript - Including Jquery Library from a external scource -
i trying include following jquery library: http://ajax.googleapis.com/ajax/libs/jquery/1.9.1/jquery.min.js when run bellow code alert not displayed: <div style="float: left; margin-left:0px; width:20px; padding-top: 10px;"> <form id="payment_form" action="https://arembepe.net/tester3.php" method="post"> número cartão: <input type="text" id="card_number"/> <br/> </form> </div> <script src="https://assets.pagar.me/js/pagarme.min.js"></script><script src="http://ajax.googleapis.com/ajax/libs/jquery/1.9.1/jquery.min.js"> alert(123); </script> however when run same code without reference jquery library alert displayed: <div style="float: left; margin-left:0px; width:20px; padding-top: 10px;"> <form id="payment_form" action="https://arembepe.net/tester3.php" method="po