javascript - Load reCAPTCHA dynamically -


there several ways load recaptcha using javascript such below:

<html>   <head>     <title>loading captcha javascript</title> <script src="https://code.jquery.com/jquery-1.12.0.min.js"></script>     <script type='text/javascript'>     var captchacontainer = null;     var loadcaptcha = function() {       captchacontainer = grecaptcha.render('captcha_container', {         'sitekey' : 'your sitekey',         'callback' : function(response) {           console.log(response);         }       });     };     </script>   </head>   <body>       <div id="captcha_container"></div>       <input type="button" id="mybtn" value="mybtn">       <script src="https://www.google.com/recaptcha/api.js?onload=loadcaptcha&render=explicit" async defer></script>   </body> </html>

this code load captcha on pageload. want load recaptcha when clicked on "mybtn". code changes into:

<html>   <head>     <title>loading captcha javascript</title> <script src="https://code.jquery.com/jquery-1.12.0.min.js"></script>     <script type='text/javascript'> $('#mybtn').on('click',function(){     var captchacontainer = null;     var loadcaptcha = function() {       captchacontainer = grecaptcha.render('captcha_container', {         'sitekey' : 'your sitekey',         'callback' : function(response) {           console.log(response);         }       });     };  });     </script>   </head>   <body>       <div id="captcha_container"></div>       <input type="button" id="mybtn" value="mybtn">       <script src="https://www.google.com/recaptcha/api.js?onload=loadcaptcha&render=explicit" async defer></script>   </body> </html>

but code didn't work when click on "mybtn" , recaptcha not load. me plz. thanks.

you need call loadcaptcha()

$('#mybtn').on('click',function(){      var captchacontainer = null;      var loadcaptcha = function() {        captchacontainer = grecaptcha.render('captcha_container', {          'sitekey' : 'your sitekey',          'callback' : function(response) {            console.log(response);          }        });      };      loadcaptcha(); // line missing   });
<script src="https://code.jquery.com/jquery-1.12.0.min.js"></script>        <div id="captcha_container"></div>        <input type="button" id="mybtn" value="mybtn">        <script src="https://www.google.com/recaptcha/api.js?onload=loadcaptcha&render=explicit"></script>


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