boilerplate 4.0 - javascript function is not defined - javascript-events

I am using Boilerplate 4.0 with main.js being loaded at the bottom of the body tag. I am trying to write the footer as script to make updating the copyright year easier, i.e. in main.js vs every html file. The function reference in the html comes before main.js is loaded, so I keep getting:
"Uncaught ReferenceError: (function) is not defined"
I can load main.js before the footer section and everything works, but doesn't that defeat the purpose?
html code:
<footer id="page-footer">
<script src="js/footer.js"></script>
<h5>
<script>footera();</script>
<strong><script>footerb();</script></strong>
<script>footerc();</script>
</h5>
</footer>
main.js code:
function footera() {
document.write("Copyright© 2012, ");
}
function footerb() {
document.write("<name>, ");
}
function footerc() {
document.write("all rights reserved");
}

If you call a javascript function before the browser has created that function, you will get an error. So calling the script before you use the functions is the right way.
However, I wouldn't use document.write anyway. I would change the code of the tags. If you use querySelectors instead, you will actually want to put it at the very bottom.
let footertitle = document.querySelector(".footer-title");
let footerlink = document.querySelector(".footer-link");
let footersubtitle = document.querySelector(".footer-subtitle");
footertitle.innerHTML = "Copyright © 2012, ";
footerlink.innerHTML = ",";
footersubtitle.innerHTML = " all rights reserved";
.footer-link{font-weight:bold;}
<footer id="page-footer">
<h5>
<span class="footer-title"></span>
<a class="footer-link" href="main.html"></a>
<span class="footer-subtitle"></span>
</h5>
</footer>

Related

Modal Dialog fails to close on submission once ui.alert is Commented out

Why should the Commenting out of a ui.alert cause the submission of a Modal Dialog to fail to close on submission? The functions still actually do what they are supposed to do, but the Dialog won't go away; you have to click the close button. I've been using Alert Boxes to troubleshoot my work, and now as I Comment them out, I find that there is one that I can't, without producing this problem.
The line in question is the only one commented out here:
function getStartFromDialog (form) {
scriptProperties.getProperties();
var option1 = scriptProperties.getProperty('savedOption1');
var option2 = scriptProperties.getProperty('savedOption2');
var eRow = scriptProperties.getProperty('savedRow');
var tabName = scriptProperties.getProperty('savedTab');
var start = form.chosenStart;
// ui.alert ('Chosen option is '+ start);
if (start == 'option1'){var adjustedStart = option1}
else {var adjustedStart = option2}
reactToUserEntryOfStart (adjustedStart,eRow);
}
Here is the index.htm file:
<!DOCTYPE html>
<html>
<head>
<base target="_top">
<link rel="stylesheet" href="https://ssl.gstatic.com/docs/script/css/add-ons1.css">
<script>
function submitForm() {
google.script.run.getStartFromDialog(document.getElementById("startChoiceForm"));
document.getElementById("form").style.display = "none";
}
</script>
</head>
<body>
<div>
<div id="form">
<? var offeredStart1 = offeredStarts[0]; var offeredStart2 = offeredStarts[1] ?>
<form id="startChoiceForm">
<select name="chosenStart" id ="chosenStart">
<option value="option1"><?= offeredStart1 ?></option>
<option value="option2"><?= offeredStart2 ?></option>
</select>
<div>
<input type="submit" value="Submit" class="action" onclick="submitForm()" >
<input type="button" value="Close" onclick="google.script.host.close()" >
</div>
</form>
</div>
</body>
</html>
This video demonstrates:
Functions working;
My Commenting out that line ui.alert ('Chosen option is '+ start);
Same procedure; now Dialog Box hangs.
The scripts allow the user to enter times in testUserEntTime!A3:A without typing a colon or specifying AM/PM, ie 325 for either 3:25am or 3:25pm. It automatically turns these entries into date-time values so that they are always sequential top-to-bottom, permitting no date-time to be earlier than the one before.
The dialog box is triggered by the entering of a time which has the same hour as the time above it, but earlier minutes.
In the video, the previous time is 4:55 am 9/5/2001 (formatted so only the time shows) and I am entering 450. This causes the script to ask whether I intend to indicate 4:50pm, or 4:50am on the next day, 9/6.
Thank you for your help; I'm bewildered.
YouTube video demonstrating bug
When I saw your sample Spreadsheet and your current script, in your situation, how about the following modification?
From:
google.script.run.getStartFromDialog(document.getElementById("startChoiceForm"));
To:
google.script.run.withSuccessHandler(google.script.host.close).getStartFromDialog(document.getElementById("startChoiceForm"));
When ui.alert ('Chosen option is '+ start); is used in the function getStartFromDialog, the dialog is overwritten by ui.alert. By this, when the ok button is clicked, the dialog is closed. When you want to close the dialog by clicking submit button, google.script.host.close is run using withSuccessHandler.
Reference:
withSuccessHandler(function)

barryvdh/laravel-dompdf - How to add javascript and/or jquery code into PDF

Thank you in advance
I am generating PDF with barryvdh/laravel-dompdf laravel library, i am able to add dynamic code to add in PDF but how to add javascript or jquery code
I tried like this
$pdf = PDF::loadView('invoice', compact('invoiceDetails'));
$pdf->setOptions(['enable_javascript', true])->setOptions(['javascript-delay', 13500])->save(public_path('invoice.pdf'));
invoice.blade.php looks like this (Just adding small code)
<h2 class="h2">Summary<span id="demo_span"></span> </h2>
<script type="text/javascript">
document.getElementById('demo_span').innerHTML ='THIS IS FOR AN EXAMPLE';
</script>
So the output would add text "THIS IS FOR AN EXAMPLE" where ID is demo_span
Firstly,
You have to set it in the package settings. Publish the config and change
it there.
To make it work, you need to use this JS bloc inside your PDF Blade :
<script type="text/javascript"> try { this.print(); } catch (e) { window.onload = window.print; } </script>

Use document.getElementById after loading with Ajax

Please help me out here.
I have a file index.php, relevant portion (Jquery is loaded earlier):
<div id="test"></div>
<script type="text/javascript">
$('#test').load("table.php");
</script>
And a file table.php. If no variables are given, an unfiltered table is shown. When table.php loads, it also loads a select field, like:
<select name="testfield" id="testfield" onchange="javascript:setactionfilter();">
<option value="1">Test</option>
<option value="2">Test2</option>
</select>
After that, a script to reload table.php in that testdiv with filtered results:
<script type="text/javascript">
function setactionfilter(){
$('#test').load("table.php?action=".document.getElementById('testfield').selectedvalue);
}
</script>
The problem is that my browser tells me that the getElementById is null, in other words, it can't find my select field in the page.
Any idea what I am doing wrong?
Change the . to +
Concatenation is done with + in javascript e.g string3 = string1 + " " + string2
$('#test').load("table.php?action="+document.getElementById('testfield').value);
The .load function is asynchronous, so performing operations that requires the data immediately will fail. Instead, use the callback functionality of the load function:
$('#test').load('table.php', function() {
// Do your stuff here!
});
Putting your code in the callback function ensures that table.php is loaded and ready when the code is run.

Ajax cross domain question

In the code there are two methods, 1st method should read the text from the same domain that is example.com, and the 2nd function should read the text from different domain that Google.com/example.txt. Could any please let me know who to do this. I'm not sure whether I have framed the question properly. Please ask me if you do not understand my question.
//Ajax Question
//The html file path is http://example.com/example.html
<html>
<head>
<script type="text/javascript">
function Click1()
{
var div=// read the text from http://example.com/example.txt
document.getElementById("div1").innerHTML = div;
}
function Click2()
{
var div=// read the text from http://google.com/example.txt
document.getElementById("div2").innerHTML = div;
}
</script>
<body>
<input type="Button" Value="Button 1"name="textbox" onClick="Click1();"/>
<div id="div1">
</div>
<input type="Button" Value="Button 2"name="textbox" onClick="Click2();"/>
<div id="div2">
</div>
This cannot be accomplished using pure scripting technology. One way to achieve it is to write a server side script on example.com that will serve as a bridge to the other domain and perform the ajax call to example.com/bridge.cgi. In case you have control over the other domain you could also use JSONP which doesn't rely on XHR but instead it includes a script tag into the DOM and thus is limited to GET requests only.

How do I show multiple recaptchas on a single page?

I have 2 forms on a single page. One of the forms has a Recaptcha displaying all the time. The other should display a Recaptcha only after a certain event such as maxing out login attempts. So there are times when I would need 2 Recaptchas to appear on the same page. Is this possible? I know I could probably use a single one for both, but the way I have the layout, I would much prefer to have 2. Thanks.
Update: well I guess it may not be possible. Can anybody recommend another capture library to use side by side with reCaptcha? I really want to be able to have 2 captchas on the same page.
Update 2: What if I put each form in an iframe? Would this be an acceptable solution?
With the current version of Recaptcha (reCAPTCHA API version 2.0), you can have multiple Recaptchas on one page.
There is no need to clone the Recaptcha nor try to workaround the problem. You just have to put multiple <div> elements for the Recaptchas and render the Recaptchas inside them explicitly.
This is easy with the Google Recaptcha API. Here is the example HTML code:
<form>
<h1>Form 1</h1>
<div><input type="text" name="field1" placeholder="field1"></div>
<div><input type="text" name="field2" placeholder="field2"></div>
<div id="RecaptchaField1"></div>
<div><input type="submit"></div>
</form>
<form>
<h1>Form 2</h1>
<div><input type="text" name="field3" placeholder="field3"></div>
<div><input type="text" name="field4" placeholder="field4"></div>
<div id="RecaptchaField2"></div>
<div><input type="submit"></div>
</form>
In your Javascript code, you have to define a callback function for Recaptcha:
<script type="text/javascript">
var CaptchaCallback = function() {
grecaptcha.render('RecaptchaField1', {'sitekey' : '6Lc_your_site_key'});
grecaptcha.render('RecaptchaField2', {'sitekey' : '6Lc_your_site_key'});
};
</script>
After this, your Recaptcha script URL should look like this:
<script src="https://www.google.com/recaptcha/api.js?onload=CaptchaCallback&render=explicit" async defer></script>
Or instead of giving IDs to your Recaptcha fields, you can give a class name and loop these elements with your class selector and call .render().
Simple and straightforward:
Create your Recaptcha fields normally with this:
<div class="g-recaptcha" data-sitekey="YOUR_KEY_HERE"></div>
Load the script with this:
<script src="https://www.google.com/recaptcha/api.js?onload=CaptchaCallback&render=explicit" async defer></script>
Now call this to iterate over the fields and create the Recaptchas:
<script type="text/javascript">
var CaptchaCallback = function() {
jQuery('.g-recaptcha').each(function(index, el) {
grecaptcha.render(el, {
'sitekey' : jQuery(el).attr('data-sitekey')
,'theme' : jQuery(el).attr('data-theme')
,'size' : jQuery(el).attr('data-size')
,'tabindex' : jQuery(el).attr('data-tabindex')
,'callback' : jQuery(el).attr('data-callback')
,'expired-callback' : jQuery(el).attr('data-expired-callback')
,'error-callback' : jQuery(el).attr('data-error-callback')
});
});
};
</script>
This answer is an extension to #raphadko's answer.
If you need to extract manually the captcha code (like in ajax requests) you have to call:
grecaptcha.getResponse(widget_id)
But how can you retrieve the widget id parameter?
I use this definition of CaptchaCallback to store the widget id of each g-recaptcha box (as an HTML data attribute):
var CaptchaCallback = function() {
jQuery('.g-recaptcha').each(function(index, el) {
var widgetId = grecaptcha.render(el, {'sitekey' : 'your code'});
jQuery(this).attr('data-widget-id', widgetId);
});
};
Then I can call:
grecaptcha.getResponse(jQuery('#your_recaptcha_box_id').attr('data-widget-id'));
to extract the code.
A similar question was asked about doing this on an ASP page (link) and the consensus over there was that it was not possible to do with recaptcha. It seems that multiple forms on a single page must share the captcha, unless you're willing to use a different captcha. If you are not locked into recaptcha a good library to take a look at is the Zend Frameworks Zend_Captcha component (link). It contains a few
This is easily accomplished with jQuery's clone() function.
So you must create two wrapper divs for the recaptcha. My first form's recaptcha div:
<div id="myrecap">
<?php
require_once('recaptchalib.php');
$publickey = "XXXXXXXXXXX-XXXXXXXXXXX";
echo recaptcha_get_html($publickey);
?>
</div>
The second form's div is empty (different ID). So mine is just:
<div id="myraterecap"></div>
Then the javascript is quite simple:
$(document).ready(function() {
// Duplicate our reCapcha
$('#myraterecap').html($('#myrecap').clone(true,true));
});
Probably don't need the second parameter with a true value in clone(), but doesn't hurt to have it... The only issue with this method is if you are submitting your form via ajax, the problem is that you have two elements that have the same name and you must me a bit more clever with the way you capture that correct element's values (the two ids for reCaptcha elements are #recaptcha_response_field and #recaptcha_challenge_field just in case someone needs them)
I know this question is old but in case if anyone will look for it in the future. It is possible to have two captcha's on one page. Pink to documentation is here: https://developers.google.com/recaptcha/docs/display
Example below is just a copy form doc and you dont have to specify different layouts.
<script type="text/javascript">
var verifyCallback = function(response) {
alert(response);
};
var widgetId1;
var widgetId2;
var onloadCallback = function() {
// Renders the HTML element with id 'example1' as a reCAPTCHA widget.
// The id of the reCAPTCHA widget is assigned to 'widgetId1'.
widgetId1 = grecaptcha.render('example1', {
'sitekey' : 'your_site_key',
'theme' : 'light'
});
widgetId2 = grecaptcha.render(document.getElementById('example2'), {
'sitekey' : 'your_site_key'
});
grecaptcha.render('example3', {
'sitekey' : 'your_site_key',
'callback' : verifyCallback,
'theme' : 'dark'
});
};
</script>
The grecaptcha.getResponse() method accepts an optional "widget_id" parameter, and defaults to the first widget created if unspecified. A widget_id is returned from the grecaptcha.render() method for each widget created, it is not related to the attribute id of the reCAPTCHA container!!
Each reCAPTCHA has its own response data.
You have to give the reCAPTCHA div an ID and pass it to the getResponse method:
e.g.
<div id="reCaptchaLogin"
class="g-recaptcha required-entry"
data-sitekey="<?php echo $this->helper('recaptcha')->getKey(); ?>"
data-theme="<?php echo($this->helper('recaptcha')->getTheme()); ?>"
style="transform:scale(0.82);-webkit-transform:scale(0.82);transform-origin:0 0;-webkit-transform-origin:0 0;">
</div>
<script type="text/javascript">
var CaptchaCallback = function() {
jQuery('.g-recaptcha').each(function(index, el) {
grecaptcha.render(el, {
'sitekey' : jQuery(el).attr('data-sitekey')
,'theme' : jQuery(el).attr('data-theme')
,'size' : jQuery(el).attr('data-size')
,'tabindex' : jQuery(el).attr('data-tabindex')
,'callback' : jQuery(el).attr('data-callback')
,'expired-callback' : jQuery(el).attr('data-expired-callback')
,'error-callback' : jQuery(el).attr('data-error-callback')
});
});
};
</script>
<script src="https://www.google.com/recaptcha/api.js?onload=CaptchaCallback&render=explicit" async defer></script>
Access response:
var reCaptchaResponse = grecaptcha.getResponse(0);
or
var reCaptchaResponse = grecaptcha.getResponse(1);
I have contact form in footer that always displays and also some pages, like Create Account, can have captcha too, so it's dynamically and I'm using next way with jQuery:
html:
<div class="g-recaptcha" id="g-recaptcha"></div>
<div class="g-recaptcha" id="g-recaptcha-footer"></div>
javascript
<script src="https://www.google.com/recaptcha/api.js?onload=CaptchaCallback&render=explicit&hl=en"></script>
<script type="text/javascript">
var CaptchaCallback = function(){
$('.g-recaptcha').each(function(){
grecaptcha.render(this,{'sitekey' : 'your_site_key'});
})
};
</script>
This is a JQuery-free version of the answer provided by raphadko and noun.
1) Create your recaptcha fields normally with this:
<div class="g-recaptcha"></div>
2) Load the script with this:
<script src="https://www.google.com/recaptcha/api.js?onload=CaptchaCallback&render=explicit" async defer></script>
3) Now call this to iterate over the fields and create the recaptchas:
var CaptchaCallback = function() {
var captchas = document.getElementsByClassName("g-recaptcha");
for(var i = 0; i < captchas.length; i++) {
grecaptcha.render(captchas[i], {'sitekey' : 'YOUR_KEY_HERE'});
}
};
Looking at the source code of the page I took the reCaptcha part and changed the code a bit. Here's the code:
HTML:
<div class="tabs">
<ul class="product-tabs">
<li id="product_tabs_new" class="active">Detailed Description</li>
<li id="product_tabs_what">Request Information</li>
<li id="product_tabs_wha">Make Offer</li>
</ul>
</div>
<div class="tab_content">
<li class="wide">
<div id="product_tabs_new_contents">
<?php $_description = $this->getProduct()->getDescription(); ?>
<?php if ($_description): ?>
<div class="std">
<h2><?php echo $this->__('Details') ?></h2>
<?php echo $this->helper('catalog/output')->productAttribute($this->getProduct(), $_description, 'description') ?>
</div>
<?php endif; ?>
</div>
</li>
<li class="wide">
<label for="recaptcha">Captcha</label>
<div id="more_info_recaptcha_box" class="input-box more_info_recaptcha_box"></div>
</li>
<li class="wide">
<label for="recaptcha">Captcha</label>
<div id="make_offer_recaptcha_box" class="input-box make_offer_recaptcha_box"></div>
</li>
</div>
jQuery:
<script type="text/javascript" src="http://www.google.com/recaptcha/api/js/recaptcha_ajax.js"></script>
<script type="text/javascript">
jQuery(document).ready(function() {
var recapExist = false;
// Create our reCaptcha as needed
jQuery('#product_tabs_what').click(function() {
if(recapExist == false) {
Recaptcha.create("<?php echo $publickey; ?>", "more_info_recaptcha_box");
recapExist = "make_offer_recaptcha_box";
} else if(recapExist == 'more_info_recaptcha_box') {
Recaptcha.destroy(); // Don't really need this, but it's the proper way
Recaptcha.create("<?php echo $publickey; ?>", "more_info_recaptcha_box");
recapExist = "make_offer_recaptcha_box";
}
});
jQuery('#product_tabs_wha').click(function() {
if(recapExist == false) {
Recaptcha.create("<?php echo $publickey; ?>", "make_offer_recaptcha_box");
recapExist = "more_info_recaptcha_box";
} else if(recapExist == 'make_offer_recaptcha_box') {
Recaptcha.destroy(); // Don't really need this, but it's the proper way (I think :)
Recaptcha.create("<?php echo $publickey; ?>", "make_offer_recaptcha_box");
recapExist = "more_info_recaptcha_box";
}
});
});
</script>
I am using here simple javascript tab functionality. So, didn't included that code.
When user would click on "Request Information" (#product_tabs_what) then JS will check if recapExist is false or has some value. If it has a value then this will call Recaptcha.destroy(); to destroy the old loaded reCaptcha and will recreate it for this tab. Otherwise this will just create a reCaptcha and will place into the #more_info_recaptcha_box div. Same as for "Make Offer" #product_tabs_wha tab.
var ReCaptchaCallback = function() {
$('.g-recaptcha').each(function(){
var el = $(this);
grecaptcha.render(el.get(0), {'sitekey' : el.data("sitekey")});
});
};
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<script src="https://www.google.com/recaptcha/api.js?onload=ReCaptchaCallback&render=explicit" async defer></script>
ReCaptcha 1
<div class="g-recaptcha" data-sitekey="6Lc8WQcUAAAAABQKSITdXbc6p9HISCQhZIJwm2Zw"></div>
ReCaptcha 2
<div class="g-recaptcha" data-sitekey="6Lc8WQcUAAAAABQKSITdXbc6p9HISCQhZIJwm2Zw"></div>
ReCaptcha 3
<div class="g-recaptcha" data-sitekey="6Lc8WQcUAAAAABQKSITdXbc6p9HISCQhZIJwm2Zw"></div>
To add a bit to raphadko's answer: since you have multiple captchas (on one page), you can't use the (universal) g-recaptcha-response POST parameter (because it holds only one captcha's response). Instead, you should use grecaptcha.getResponse(opt_widget_id) call for each captcha. Here's my code (provided each captcha is inside its form):
HTML:
<form ... />
<div id="RecaptchaField1"></div>
<div class="field">
<input type="hidden" name="grecaptcha" id="grecaptcha" />
</div>
</form>
and
<script src="https://www.google.com/recaptcha/api.js?onload=CaptchaCallback&render=explicit" async defer></script>
JavaScript:
var CaptchaCallback = function(){
var widgetId;
$('[id^=RecaptchaField]').each(function(index, el) {
widgetId = grecaptcha.render(el.id, {'sitekey' : 'your_site_key'});
$(el).closest("form").submit(function( event ) {
this.grecaptcha.value = "{\"" + index + "\" => \"" + grecaptcha.getResponse(widgetId) + "\"}"
});
});
};
Notice that I apply the event delegation (see refresh DOM after append element ) to all the dynamically modified elements. This binds every individual captha's response to its form submit event.
A good option is to generate a recaptcha input for each form on the fly (I've done it with two but you could probably do three or more forms). I'm using jQuery, jQuery validation, and jQuery form plugin to post the form via AJAX, along with the Recaptcha AJAX API -
https://developers.google.com/recaptcha/docs/display#recaptcha_methods
When the user submits one of the forms:
intercept the submission - I used jQuery Form Plugin's beforeSubmit property
destroy any existing recaptcha inputs on the page - I used jQuery's $.empty() method and Recaptcha.destroy()
call Recaptcha.create() to create a recaptcha field for the specific form
return false.
Then, they can fill out the recaptcha and re-submit the form. If they decide to submit a different form instead, well, your code checks for existing recaptchas so you'll only have one recaptcha on the page at a time.
Here's a solution that builds off many of the excellent answers. This option is jQuery free, and dynamic, not requiring you to specifically target elements by id.
1) Add your reCAPTCHA markup as you normally would:
<div class="g-recaptcha" data-sitekey="YOUR_KEY_HERE"></div>
2) Add the following into the document. It will work in any browser that supports the querySelectorAll API
<script src="https://www.google.com/recaptcha/api.js?onload=renderRecaptchas&render=explicit" async defer></script>
<script>
window.renderRecaptchas = function() {
var recaptchas = document.querySelectorAll('.g-recaptcha');
for (var i = 0; i < recaptchas.length; i++) {
grecaptcha.render(recaptchas[i], {
sitekey: recaptchas[i].getAttribute('data-sitekey')
});
}
}
</script>
It is possible, just overwrite the Recaptcha Ajax callbacks. Working jsfiddle: http://jsfiddle.net/Vanit/Qu6kn/
You don't even need a proxy div because with the overwrites the DOM code won't execute. Call Recaptcha.reload() whenever you want to trigger the callbacks again.
function doSomething(challenge){
$(':input[name=recaptcha_challenge_field]').val(challenge);
$('img.recaptcha').attr('src', '//www.google.com/recaptcha/api/image?c='+challenge);
}
//Called on Recaptcha.reload()
Recaptcha.finish_reload = function(challenge,b,c){
doSomething(challenge);
}
//Called on page load
Recaptcha.challenge_callback = function(){
doSomething(RecaptchaState.challenge)
}
Recaptcha.create("YOUR_PUBLIC_KEY");
Here is a nice guide for doing exactly that:
http://mycodde.blogspot.com.ar/2014/12/multiple-recaptcha-demo-same-page.html
Basically you add some parameters to the api call and manually render each recaptcha:
<script src="https://www.google.com/recaptcha/api.js?onload=myCallBack&render=explicit" async defer></script>
<script>
var recaptcha1;
var recaptcha2;
var myCallBack = function() {
//Render the recaptcha1 on the element with ID "recaptcha1"
recaptcha1 = grecaptcha.render('recaptcha1', {
'sitekey' : '6Lc_0f4SAAAAAF9ZA', //Replace this with your Site key
'theme' : 'light'
});
//Render the recaptcha2 on the element with ID "recaptcha2"
recaptcha2 = grecaptcha.render('recaptcha2', {
'sitekey' : '6Lc_0f4SAAAAAF9ZA', //Replace this with your Site key
'theme' : 'dark'
});
};
</script>
PS: The "grecaptcha.render" method receives an ID
I would use invisible recaptcha. Then on your button use a tag like " formname='yourformname' " to specify which form is to be submitted and hide a submit form input.
The advantage of this is it allows for you to keep the html5 form validation intact, one recaptcha, but multiple button interfaces. Just capture the "captcha" input value for the token key generated by recaptcha.
<script src="https://www.google.com/recaptcha/api.js" async defer ></script>
<div class="g-recaptcha" data-sitekey="yours" data-callback="onSubmit" data-size="invisible"></div>
<script>
var formanme = ''
$('button').on('click', function () { formname = '#'+$(this).attr('formname');
if ( $(formname)[0].checkValidity() == true) { grecaptcha.execute(); }
else { $(formname).find('input[type="submit"]').click() }
});
var onSubmit = function(token) {
$(formname).append("<input type='hidden' name='captcha' value='"+token+"' />");
$(formname).find('input[type="submit"]').click()
};
</script>
I find this FAR simpler and easier to manage.

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