How to Reload ReCaptcha using JavaScript?
JavascriptRecaptchaJavascript Problem Overview
I have a signup form with AJAX so that I want to refresh Recaptcha image anytime an error is occured (i.e. username already in use).
I am looking for a code compatible with ReCaptcha to reload it using JavaScript.
Javascript Solutions
Solution 1 - Javascript
For reCaptcha v2, use:
grecaptcha.reset();
If you're using reCaptcha v1 (probably not):
Recaptcha.reload();
This will do if there is an already loaded Recaptcha on the window
.
(Updated based on @SebiH's comment below.)
Solution 2 - Javascript
If you are using version 1
Recaptcha.reload();
If you are using version 2
grecaptcha.reset();
Solution 3 - Javascript
Important: Version 1.0 of the reCAPTCHA API is no longer supported. Please upgrade to Version 2.0.
You can use grecaptcha.reset(); to reset the captcha.
Source: https://developers.google.com/recaptcha/docs/display#js_api
Solution 4 - Javascript
grecaptcha.reset(opt_widget_id)
Resets the reCAPTCHA widget. An optional widget id can be passed, otherwise the function resets the first widget created. (from Google's web page)
Solution 5 - Javascript
Or you could just simulate a click on the refresh button
// If recaptcha object exists, refresh it
if (typeof Recaptcha != "undefined") {
jQuery('#recaptcha_reload').click();
}
Solution 6 - Javascript
Try this
<script type="text/javascript" src="//www.google.com/recaptcha/api/js/recaptcha_ajax.js"></script>
<script type="text/javascript">
function showRecaptcha() {
Recaptcha.create("YOURPUBLICKEY", 'captchadiv', {
theme: 'red',
callback: Recaptcha.focus_response_field
});
}
</script>
<div id="captchadiv"></div>
If you calll showRecaptcha the captchadiv will be populated with a new recaptcha instance.
Solution 7 - Javascript
For AngularJS users:
$window.grecaptcha.reset();
Solution 8 - Javascript
if you are using new recaptcha 2.0 use this: for code behind:
ScriptManager.RegisterStartupScript(this, this.GetType(), "CaptchaReload", "$.getScript(\"https://www.google.com/recaptcha/api.js\", function () {});", true);
for simple javascript
<script>$.getScript(\"https://www.google.com/recaptcha/api.js\", function () {});</script>