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How to add number of input fields based on value entered on a different input field

After searching a lot on Stackoverflow, I couldn't find a solution where only Javascript used code was achieving to do the task that I wanted to create.
I have a form created on React where I am generating input fields with the help of add and remove buttons. On the other hand, what I want is based on the user input on the field, there will be other inputs as well. To clarify more let's take a look at the example picture below to draw the frontend profile:
Front end of the Webpage
When the user enters the quantity of products, new fields will be automatically generated based on the input value without the need for clicking any button. For example if the quantity is 5, I need 5 input fields for that product as in the image below
Dynamic Input Fields
I want to achieve this using Javascript functions but since I am a beginner, I don't know what to use or apply. I would appreciate a lot for your advises and solutions. Cheers!

My answer is not strictly a component but it shows more or less how you can deal with a confined structure (package) capturing the input event listener for all the quantity input text controls.
Every time the event fires (when the user inputs data inside the field), the given number of "products" are created and added to the corresponding element in the package where the event originated.
Styling wise it's terrible but I did the bare minimum to deliver something worth seeing.
I styled the product number in the list using css counters and a ::before pseudo element just for the sake of adding maybe useful ideas to the game:
//add input event listener to qty input
[...document.querySelectorAll('.package .qty')]
.forEach( qtyEl => {
qtyEl.addEventListener('input', (event)=>{
const qtyEl = event.target;
const qty = event.target.value;
clearProducts(qtyEl);
addProducts(qtyEl, qty);
});
})
//removes the products in the given package
function clearProducts(from){
const target = from.closest('.package').querySelector('.products');
target.innerHTML = '';
}
//adds a number of products in the given package
function addProducts(from, n){
const target = from.closest('.package').querySelector('.products');
for(let i = 0; i<n; i++){
const product = createProduct();
target.append(product);
}
}
//creates and returns a product
function createProduct(){
const product = document.createElement('div');
const input = document.createElement('input');
product.classList.add('product');
input.classList.add('product-name');
product.append(input);
return product;
}
.package{
display: flex;
flex-wrap: wrap;
gap: 1em;
border: solid purple;
padding: 1em;
margin-bottom: 1em;
counter-reset: product;
}
.package .type{
width: 50%;
height: 2rem;
}
.package .products{
width: 100%;
display: flex;
flex-direction: column;
padding: 1em;
}
.product{
position: relative;
margin-bottom: 1em;
border: solid 1px darkgray;
padding: 1em;
}
.product::before {
counter-increment: product;
position: absolute;
content: "Product " counter(product) ": ";
top: -13px;
left: 10px;
font-size: 1rem;
color: darkgray;
background: white;
padding: 2px;
}
.product input{
width: 100%;
border: none;
}
<div class="package">
<input type="text" class="type">
<input type="number" class="qty">
<div class="products">
</div>
</div>
<div class="package">
<input type="text" class="type">
<input type="number" class="qty">
<div class="products">
</div>
</div>

How to stop spinner after operation is finished

I am building my first web app using Flask. I'm new to html/ JavaScript/ CSS - please bear with me.
The app does the following: The user uploads an Excel file as follows:
<form method="POST" enctype="multipart/form-data">
<input type="file" name="file" id="file" />
Then they select certain parameters using dropdown lists. When the user clicks "Submit", the data is manipulated using pandas and a new file is exported in Excel.
I managed to add a spinner to the "submit" button using html and CSS. I added an event listener to my JavaScript so the spinner is activated when the button is clicked. At the moment, the spinner runs indefinitely, however I would like the spinner to stop and the button text to revert to "submit" once the operation is finished, i.e. the export is complete. Does anybody know how I can accomplish this?
Here is my html:
<button type="submit" id="submit" class="button">
<span class="button__text">Submit</span>
</button>
Here is my CSS:
<style>
.button {
position: relative;
padding: 8px 16px;
background: #009579;
border: none;
outline: none;
border-radius: 2px;
cursor: pointer;
}
.button:active {
background: #007a63;
}
.button__text {
font: bold 20px "Quicksand", san-serif;
color: #ffffff;
transition: all 0.2s;
}
.button--loading .button__text {
visibility: hidden;
opacity: 0;
}
.button--loading::after {
content: "";
position: absolute;
width: 16px;
height: 16px;
top: 0;
left: 0;
right: 0;
bottom: 0;
margin: auto;
border: 4px solid transparent;
border-top-color: #ffffff;
border-radius: 50%;
animation: button-loading-spinner 1s ease infinite;
}
/*animate spinner - spin from 0 to 1 turn*/
#keyframes button-loading-spinner {
from {
transform: rotate(0turn);
}
to {
transform: rotate(1turn);
}
</style>
Here is my JavaScript:
<script type="text/javascript">
(() => {
const elem = document.getElementById('submit');
elem.disabled = false;
elem.addEventListener('click', e=> {
elem.classList.add('button--loading');
});
})();
</script>

Basically, your frontend (the HTML/Javascript) needs some way of knowing when "the export is complete". Depending on your definition of "export" and "complete".
At the most rudimentary level, you could have the frontend poll the server every second after the upload starts, and have the server return some kind of status as to what the state of the process is. This could be as simple as:
GET /status/1234
> {"status": "IN_PROGRESS"}
which, when the "export is complete" switches to:
> {"status": "COMPLETE"}
And when the frontend receives the COMPLETE status, it removes the spinner. Notice the 1234. You will need some way of identifying the upload in progress. One way to do this would be to assign it a random id when you first accept the form, so the initial POST /upload returns > {'id': 1234} which the client can then use for the subsequent polling.
If "export is complete" actually only means that the file is finished uploading, you could still use a polling method, but a much slicker way is to use the client (web browser) method of determining how many bytes have been sent (see this SO answer).

How to change div elements' css inside iframe [duplicate]

I have not had much success finding how to style Google's new recaptcha (v2). The eventual goal is to make it responsive, but I am having difficulty applying styling for even simple things like width.
Their API documentation does not appear to give any specifics on how to control styling at all other than the theme parameter, and simple CSS & JavaScript solutions haven't worked for me.
Basically, I need to be able to apply CSS to Google's new version of reCaptcha. Using JavaScript with it is acceptable.

Overview:
Sorry to be the answerer of bad news, but after research and debugging, it's pretty clear that there is no way to customize the styling of the new reCAPTCHA controls. The controls are wrapped in an iframe, which prevents the use of CSS to style them, and Same-Origin Policy prevents JavaScript from accessing the contents, ruling out even a hacky solution.
Why No Customize API?:
Unlike reCAPTCHA API Version 1.0, there are no customize options in API Version 2.0. If we consider how this new API works, it's no surprise why.
Excerpt from Are you a robot? Introducing “No CAPTCHA reCAPTCHA”:
While the new reCAPTCHA API may sound simple, there is a high degree of sophistication behind that modest checkbox. CAPTCHAs have long relied on the inability of robots to solve distorted text. However, our research recently showed that today’s Artificial Intelligence technology can solve even the most difficult variant of distorted text at 99.8% accuracy. Thus distorted text, on its own, is no longer a dependable test.
To counter this, last year we developed an Advanced Risk Analysis backend for reCAPTCHA that actively considers a user’s entire engagement with the CAPTCHA—before, during, and after—to determine whether that user is a human. This enables us to rely less on typing distorted text and, in turn, offer a better experience for users. We talked about this in our Valentine’s Day post earlier this year.
If you were able to directly manipulate the styling of the control elements, you could easily interfere with the user-profiling logic that makes the new reCAPTCHA possible.
What About a Custom Theme?:
Now the new API does offer a theme option, by which you can choose a preset theme such as light and dark. However there is not presently a way to create a custom theme. If we inspect the iframe, we will find the theme name is passed in the query string of the src attribute. This URL looks something like the following.
https://www.google.com/recaptcha/api2/anchor?...&theme=dark&...
This parameter determines what CSS class name is used on the wrapper element in the iframe and determines the preset theme to use.
Digging through the minified source, I found that there are actually 4 valid theme values, which is more than the 2 listed in the documentation, but default and standard are the same as light.
We can see the code that selects the class name from this object here.
There is no code for a custom theme, and if any other theme value is specified, it will use the standard theme.
In Conclusion:
At present, there is no way to fully style the new reCAPTCHA elements, only the wrapper elements around the iframe can be stylized. This was almost-certainly done intentionally, to prevent users from breaking the user profiling logic that makes the new captcha-free checkbox possible. It is possible that Google could implement a limited custom theme API, perhaps allowing you to choose custom colors for existing elements, but I would not expect Google to implement full CSS styling.

As guys mentioned above, there is no way ATM. but still if anyone interested, then by adding in just two lines you can at least make it look reasonable, if it break on any screen. you can assign different value in #media query.
<div id="recaptchaContainer" style="transform:scale(0.8);transform-origin:0 0"></div>
Hope this helps anyone :-).

I use below trick to make it responsive and remove borders. this tricks maybe hide recaptcha message/error.
This style is for rtl lang but you can change it easy.
.g-recaptcha {
position: relative;
width: 100%;
background: #f9f9f9;
overflow: hidden;
}
.g-recaptcha > * {
float: right;
right: 0;
margin: -2px -2px -10px;/*remove borders*/
}
.g-recaptcha::after{
display: block;
content: "";
position: absolute;
left:0;
right:150px;
top: 0;
bottom:0;
background-color: #f9f9f9;
clear: both;
}
<div class="g-recaptcha" data-sitekey="Your Api Key"></div>
<script src='https://www.google.com/recaptcha/api.js?hl=fa'></script>

Unfortunately we cant style reCaptcha v2, but it is possible to make it look better, here is the code:
Click here to preview
.g-recaptcha-outer{
text-align: center;
border-radius: 2px;
background: #f9f9f9;
border-style: solid;
border-color: #37474f;
border-width: 1px;
border-bottom-width: 2px;
}
.g-recaptcha-inner{
width: 154px;
height: 82px;
overflow: hidden;
margin: 0 auto;
}
.g-recaptcha{
position:relative;
left: -2px;
top: -1px;
}
<div class="g-recaptcha-outer">
<div class="g-recaptcha-inner">
<div class="g-recaptcha" data-size="compact" data-sitekey="YOUR KEY"></div>
</div>
</div>

Add a data-size property to the google recaptcha element and make it equal to "compact" in case of mobile.
Refer: google recaptcha docs

What you can do is to hide the ReCaptcha Control behind a div. Then make your styling on this div. And set the css "pointer-events: none" on it, so you can click through the div (Click through a DIV to underlying elements).
The checkbox should be in a place where the user is clicking.

You can recreate recaptcha , wrap it in a container and only let the checkbox visible. My main problem was that I couldn't take the full width so now it expands to the container width. The only problem is the expiration you can see a flick but as soon it happens I reset it.
See this demo http://codepen.io/alejandrolechuga/pen/YpmOJX
function recaptchaReady () {
grecaptcha.render('myrecaptcha', {
'sitekey': '6Lc7JBAUAAAAANrF3CJaIjt7T9IEFSmd85Qpc4gj',
'expired-callback': function () {
grecaptcha.reset();
console.log('recatpcha');
}
});
}
.recaptcha-wrapper {
height: 70px;
overflow: hidden;
background-color: #F9F9F9;
border-radius: 3px;
box-shadow: 0px 0px 4px 1px rgba(0,0,0,0.08);
-webkit-box-shadow: 0px 0px 4px 1px rgba(0,0,0,0.08);
-moz-box-shadow: 0px 0px 4px 1px rgba(0,0,0,0.08);
height: 70px;
position: relative;
margin-top: 17px;
border: 1px solid #d3d3d3;
color: #000;
}
.recaptcha-info {
background-size: 32px;
height: 32px;
margin: 0 13px 0 13px;
position: absolute;
right: 8px;
top: 9px;
width: 32px;
background-image: url(https://www.gstatic.com/recaptcha/api2/logo_48.png);
background-repeat: no-repeat;
}
.rc-anchor-logo-text {
color: #9b9b9b;
cursor: default;
font-family: Roboto,helvetica,arial,sans-serif;
font-size: 10px;
font-weight: 400;
line-height: 10px;
margin-top: 5px;
text-align: center;
position: absolute;
right: 10px;
top: 37px;
}
.rc-anchor-checkbox-label {
font-family: Roboto,helvetica,arial,sans-serif;
font-size: 14px;
font-weight: 400;
line-height: 17px;
left: 50px;
top: 26px;
position: absolute;
color: black;
}
.rc-anchor .rc-anchor-normal .rc-anchor-light {
border: none;
}
.rc-anchor-pt {
color: #9b9b9b;
font-family: Roboto,helvetica,arial,sans-serif;
font-size: 8px;
font-weight: 400;
right: 10px;
top: 53px;
position: absolute;
a:link {
color: #9b9b9b;
text-decoration: none;
}
}
g-recaptcha {
// transform:scale(0.95);
// -webkit-transform:scale(0.95);
// transform-origin:0 0;
// -webkit-transform-origin:0 0;
}
.g-recaptcha {
width: 41px;
/* border: 1px solid red; */
height: 38px;
overflow: hidden;
float: left;
margin-top: 16px;
margin-left: 6px;
> div {
width: 46px;
height: 30px;
background-color: #F9F9F9;
overflow: hidden;
border: 1px solid red;
transform: translate3d(-8px, -19px, 0px);
}
div {
border: 0;
}
}
<script src='https://www.google.com/recaptcha/api.js?onload=recaptchaReady&&render=explicit'></script>
<div class="recaptcha-wrapper">
<div id="myrecaptcha" class="g-recaptcha"></div>
<div class="rc-anchor-checkbox-label">I'm not a Robot.</div>
<div class="recaptcha-info"></div>
<div class="rc-anchor-logo-text">reCAPTCHA</div>
<div class="rc-anchor-pt">
Privacy
<span aria-hidden="true" role="presentation"> - </span>
Terms
</div>
</div>

Great!
Now here is styling available for reCaptcha..
I just use inline styling like:
<div class="g-recaptcha" data-sitekey="XXXXXXXXXXXXXXX" style="transform: scale(1.08); margin-left: 14px;"></div>
whatever you wanna to do small customize in inline styling...
Hope it will help you!!

I came across this answer trying to style the ReCaptcha v2 for a site that has a light and a dark mode. Played around some more and discovered that besides transform, filter is also applied to iframe elements so ended up using the default/light ReCaptcha and doing this when the user is in dark mode:
.g-recaptcha {
filter: invert(1) hue-rotate(180deg);
}
The hue-rotate(180deg) makes it so that the logo is still blue and the check-mark is still green when the user clicks it, while keeping white invert()'ed to black and vice versa.
Didn't see this in any answer or comment so decided to share even if this is an old thread.

Just adding a hack-ish solution to make it responsive.
Wrap the recaptcha in an extra div:
<div class="recaptcha-wrap">
<div id="g-recaptcha"></div>
</div>
Add styles. This assumes the dark theme.
// Recaptcha
.recaptcha-wrap {
position: relative;
height: 76px;
padding:1px 0 0 1px;
background:#222;
> div {
position: absolute;
bottom: 2px;
right:2px;
font-size:10px;
color:#ccc;
}
}
// Hides top border
.recaptcha-wrap:after {
content:'';
display: block;
background-color: #222;
height: 2px;
width: 100%;
top: -1px;
left: 0px;
position: absolute;
}
// Hides left border
.recaptcha-wrap:before {
content:'';
display: block;
background-color: #222;
height: 100%;
width: 2px;
top: 0;
left: -1px;
position: absolute;
z-index: 1;
}
// Makes it responsive & hides cut-off elements
#g-recaptcha {
overflow: hidden;
height: 76px;
border-right: 60px solid #222222;
border-top: 1px solid #222222;
border-bottom: 1px solid #222;
position: relative;
box-sizing: border-box;
max-width: 294px;
}
This yields the following:
It will now resize horizontally, and doesn't have a border. The recaptcha logo would get cut off on the right, so I am hiding it with a border-right. It's also hiding the privacy and terms links, so you may want to add those back in.
I attempted to set a height on the wrapper element, and then vertically center the recaptcha to reduce the height. Unfortunately, any combo of overflow:hidden and a smaller height seems to kill the iframe.

in the V2.0 it's not possible. The iframe blocks all styling out of this. It's difficult to add a custom theme instead of the dark or light one.

Late to the party, but maybe my solution will help somebody.
I haven't found any solution that works on a responsive website when the viewport changes or the layout is fluid.
So I've created a jQuery script for django-cms that is dynamically adapting to a changing viewport.
I'm going to update this response as soon as I have the need for a modern variant of it that is more modular and has no jQuery dependency.
html
<div class="g-recaptcha" data-sitekey="{site_key}" data-size={size}>
</div>
css
.g-recaptcha { display: none; }
.g-recaptcha.g-recaptcha-initted {
display: block;
overflow: hidden;
}
.g-recaptcha.g-recaptcha-initted > * {
transform-origin: top left;
}
js
window.djangoReCaptcha = {
list: [],
setup: function() {
$('.g-recaptcha').each(function() {
var $container = $(this);
var config = $container.data();
djangoReCaptcha.init($container, config);
});
$(window).on('resize orientationchange', function() {
$(djangoReCaptcha.list).each(function(idx, el) {
djangoReCaptcha.resize.apply(null, el);
});
});
},
resize: function($container, captchaSize) {
scaleFactor = ($container.width() / captchaSize.w);
$container.find('> *').css({
transform: 'scale(' + scaleFactor + ')',
height: (captchaSize.h * scaleFactor) + 'px'
});
},
init: function($container, config) {
grecaptcha.render($container.get(0), config);
var captchaSize, scaleFactor;
var $iframe = $container.find('iframe').eq(0);
$iframe.on('load', function() {
$container.addClass('g-recaptcha-initted');
captchaSize = captchaSize || { w: $iframe.width() - 2, h: $iframe.height() };
djangoReCaptcha.resize($container, captchaSize);
djangoReCaptcha.list.push([$container, captchaSize]);
});
},
lateInit: function(config) {
var $container = $('.g-recaptcha.g-recaptcha-late').eq(0).removeClass('.g-recaptcha-late');
djangoReCaptcha.init($container, config);
}
};
window.djangoReCaptchaSetup = window.djangoReCaptcha.setup;

With the integration of the invisible reCAPTCHA you can do the following:
To enable the Invisible reCAPTCHA, rather than put the parameters in a div, you can add them directly to an html button.
a. data-callback=””. This works just like the checkbox captcha, but is required for invisible.
b. data-badge: This allows you to reposition the reCAPTCHA badge (i.e. logo and
‘protected by reCAPTCHA’ text) . Valid options as ‘bottomright’ (the default),
‘bottomleft’ or ‘inline’ which will put the badge directly above the button. If you
make the badge inline, you can control the CSS of the badge directly.

In case someone struggling with the recaptcha of contact form 7 (wordpress) here is a solution working for me
.wpcf7-recaptcha{
clear: both;
float: left;
}
.wpcf7-recaptcha{
margin-right: 6px;
width: 206px;
height: 65px;
overflow: hidden;
border-right: 1px solid #D3D3D3;
}
.wpcf7-recaptcha iframe{
padding-bottom: 15px;
border-bottom: 1px solid #D3D3D3;
background: #F9F9F9;
border-left: 1px solid #d3d3d3;
}

if you use scss, that worked for me:
.recaptcha > div{
transform: scale(0.84);
transform-origin: 0;
}

If someone is still interested, there is a simple javascript library (no jQuery dependency), named custom recaptcha. It lets you customize the button with css and implement some js events (ready/checked). The idea is to make the default recaptcha "invisible" and put a button over it. Just change the id of the recaptcha and that's it.
<head>
<script src="https://azentreprise.org/download/custom-recaptcha.min.js"></script>
<style type="text/css">
#captcha {
float: left;
margin: 2%;
background-color: rgba(72, 61, 139, 0.5); /* darkslateblue with 50% opacity */
border-radius: 2px;
font-size: 1em;
color: #C0FFEE;
}
#captcha.success {
background-color: rgba(50, 205, 50, 0.5); /* limegreen with 50% opacity */
color: limegreen;
}
</style>
</head>
<body>
<div id="captcha" data-sitekey="your_site_key" data-label="Click here" data-label-spacing="15"></div>
</body>
See https://azentreprise.org/read.php?id=1 for more information.

I am just adding this kind of solution / quick fix so it won't get lost in case of a broken link.
Link to this solution "Want to add link How to resize the Google noCAPTCHA reCAPTCHA | The Geek Goddess" was provided by Vikram Singh Saini and simply outlines that you could use inline CSS to enforce framing of the iframe.
// Scale the frame using inline CSS
<div class="g-recaptcha" data-theme="light"
data-sitekey="XXXXXXXXXXXXX"
style="transform:scale(0.77);
-webkit-transform:scale(0.77);
transform-origin:0 0;
-webkit-transform-origin:0 0;
">
</div>
// Scale the images using a stylesheet
<style>
#rc-imageselect, .g-recaptcha {
transform:scale(0.77);
-webkit-transform:scale(0.77);
transform-origin:0 0;
-webkit-transform-origin:0 0;
}
</style>

You can use some CSS for Google reCAPTCHA v2 styling on your website:
– Change background, color of Google reCAPTCHA v2 widget:
.rc-anchor-light {
background: #fff!important;
color: #fff!important; }
or
.rc-anchor-normal{
background: #000 !important;
color: #000 !important; }
– Resize the Google reCAPTCHA v2 widget by using this snippet:
.rc-anchor-light {
transform:scale(0.9);
-webkit-transform:scale(0.9); }
– Responsive your Google reCAPTCHA v2:
#media only screen and (min-width: 768px) {
.rc-anchor-light {
transform:scale(0.85);
-webkit-transform:scale(0.85); }
}
All elements, property of CSS above that’s just for your reference. You can change them by yourself (only using CSS class selector).
Refer on OIW Blog - How To Edit CSS of Google reCAPTCHA (Re-style, Change Position, Resize reCAPTCHA Badge)
You can also find out Google reCAPTCHA v3's styling there.

A bit late but I tried this and it worked to make the Recaptcha responsive on screens smaller than 460px width. You can't use css selector to select elements inside the iframe. So, better use the outermost parent element which is the class g-recaptcha to basically zoom-out i.e transform the size of the entire container. Here's my code which worked:
#media(max-width:459.99px) {
.modal .g-recaptcha {
transform:scale(0.75);
-webkit-transform:scale(0.75); }
}
}

Incase someone wants to resize recaptcha for small devices.
I was using recaptcha V2 with primeng p-captcha (for angular). The issue was that for smaller screens it would go out of the screen.
Although you can't actually resize it (the external thing and all everyone has explained it above) but there is a way with transform property (scaling the the container)
this was my code below the way, I achieved it
p-captcha div div {
transform:scale(0.9) !important;
-webkit-transform:scale(0.9) !important;
transform-origin:0 0 !important;
-webkit-transform-origin:0 0 !important;
}
Other than p-captcha you can use this code snippet below
.g-recaptcha {
transform:scale(0.9);
transform-origin:0 0;
}
Before
After

Topic is old, but I also wanted to scale the reCAPTCHA widget -- but to make it bigger for phone users, unlike many others who wanted it smaller. The only way that worked was transform: scale(x), but that seemed to make the widget too wide for my page, thus shrinking the rest of the form on the page. Using a container div as shown below fixed my problem, and hopefully it will help someone else who thinks a bigger version is better on a small screen.
<style>
:root {
/* factor to scale the Google widget in potrait mode (on a phone) */
--recaptcha-scale: 2;
}
#media screen and (orientation: portrait) {
/* needed to rein in the width of inner div when it is scaled */
#g_recaptcha_div_container {
width: calc(100vmin / var(--recaptcha-scale));
}
#g_recaptcha_div {
transform: scale(var(--recaptcha-scale));
transform-origin: 0 0;
}
#submit_button {
width: 65vmin;
height: 9vmin;
font-size: 7vmin;
/* needed to scoot the button out from under the scaled div */
margin-top: 10vmin;
}
}
</style>
<html>
<!-- top of form with a bunch of fields to create an acct -->
<div id="g_recaptcha_div_container">
<div id="g_recaptcha_div" class="g-recaptcha" data-sitekey="foo">
</div>
</div>
<input id="submit_button" type="submit" value="Create Account">
<!-- bottom of form -->
</html>

You can try to color it with this css filter hack:
.colorize-pink {
filter: brightness(0.5) sepia(1) hue-rotate(-70deg) saturate(5);
}
.colorize-navy {
filter: brightness(0.2) sepia(1) hue-rotate(180deg) saturate(5);
}
and for the size, use transform css hack
.captcha-size {
transform:scale(0.8);transform-origin:0 0
}

Lets play a little with JavaScript:
First at all, we know that recaptcha badget include all the shit from the most crazy people on Google, so you can only make changes with theme "dark" and "light" on your web.
Take a look to my website
SantiagoSoñora.
let recaptcha = document.querySelector('.g-recaptcha');
With this, you only can touch simple settings of the badge, like z-index and size, but no much more...
So far, i made two functions that set data-theme to light or dark mode at innit. Note that its neccessary assign the "light" because Google not include that by default.
function reCaptchaDark() {
document.addEventListener('DOMContentLoaded', (event) => {
recaptcha.setAttribute("data-theme", "dark");
})
}
function reCaptchaLight() {
document.addEventListener('DOMContentLoaded', (event) => {
recaptcha.setAttribute("data-theme", "light");
})
}
Then, for example, my web looks if user prefers a dark or a light theme, and set that configurations to the recaptcha bag:
(theme.onLoad = function() {
if (window.matchMedia && window.matchMedia('(prefers-color-scheme: dark)').matches) {
reCaptchaDark();
toggleTheme();
}
else {
reCaptchaLight();
}
})();
Note that my code for toggle from dark to light is on the toggleTheme() function.
Keep doing magic: You should configure a class on the html tag or something else on your web for made the change between dark and light theme, and with that we now modify the src on the iframe so when we toggle dark/light mode ,with our button it changes:
theme.onclick = function() {
toggleTheme();
if (html.classList.contains('dark')) {
recaptcha.setAttribute("data-theme", "dark");
setTimeout(function() {
let iframes = document.querySelectorAll('iframe');
iframes[0].src = iframes[0].src.replace('&theme=light', '&theme=dark');
}, 0);
}
else {
recaptcha.setAttribute("data-theme", "light");
setTimeout(function() {
let iframes = document.querySelectorAll('iframe');
iframes[0].src = iframes[0].src.replace('&theme=dark', '&theme=light');
}, 0);
}
}
And here you go, the recaptcha badge change from dark to light "preassigned" themes by Google bad guys.
And last but not least, a function that updates the page to change if your theme is dark by default.
This update the LocalStorage
(function() {
if( window.localStorage ) {
if( !localStorage.getItem('firstLoad') ) {
localStorage['firstLoad'] = true;
window.location.reload();
}
else
localStorage.removeItem('firstLoad');
}
})();
You can use the class .grecaptcha-badge for some css changes, like opacity and box-shadow, -> (use !important)
Thats all, hope you can implement on your site

HTML/CSS/Javascript delete button

I have a list of items inside a div that is determined by the contents of two arrays.
product_codes=[code1, code2, code3];
quantities=[1, 34, 67,];
Every time a new code and quantity is added to its respective array, I have a javascript function that does this:
document.getElementById('cart_body').innerHTML='';
cart_text='';
elf='<br class="none"/>';
for(i=0; i<product_codes.length; i++){
cart_text+=(product_codes[i]+" (x"+quantities[i]+")"+elf);
}
document.getElementById('cart_body').innerHTML=cart_text;
and acts upon This HTML:
<div id='cart_body'></div>
with this CSS:
.none{margin-top: 0px;}
(the CSS simply overrides another styling I gave to ALL tags)
What I want to do, is at the end of each line added to cart_text (before the inserted line break), is to add a small circular button with an x in the center (I imagine that there's something like that in Bootstrap, but I am unable to use it or any other libraries) that when clicked, deletes the text next to it ON THAT LINE ONLY (the product code and quantity) from the div, AND deletes the two items(product code and quantity) from their respective arrays. Ideally, the aforementioned delete button would look something like the button that lets you delete a your comment that you've posted(here on Stack Overflow).
Please only Vanilla CSS and Javascript answers only. No libraries, please.
If it's not too much to ask, a working JsFiddle would be great too.
Thanks!
Edit
Attempt at the button: #1
#close_button{
border: 1px solid black;
padding-top: 0;
max-width: 15px;
max-height: 15px;
background-color: lightBlue;
border-radius: 90px;
font-size: 14px;
text-align: center;
}
<div id='close_button'>x</div>
This does not work because I cannot get a proper size with the x in the exact center of the circle. I tried padding, all that good stuff, but to no avail.

You can use the following code at https://jsfiddle.net/osha90/krrhvdmj/
<div id='cart_body'>
<p>
code1 x1 <span style="display:inline-block;width:30;height:30;background-color:#d2d2d2; border-radius: 50%;font-size:12px;line-height:18px;">X</span>
</p>
var product_codes=["code1", "code2", "code3"];
var quantities=[1, 34, 67,];
document.getElementById('cart_body').innerHTML='';
for(i=0; i<product_codes.length; i++){
var p = document.createElement("p");
p.appendChild(document.createTextNode(product_codes[i] +" X "+quantities[i]));
var span = document.createElement("span");
span.appendChild(document.createTextNode("X"));
span.classList.add("delete");
var a = document.createAttribute("data-productCode");
a.value = product_codes[i];
span.setAttributeNode(a);
p.appendChild(span);
span.addEventListener("click",removeElm);
document.getElementById('cart_body').appendChild(p);
}
function removeElm(){
var div = this.parentNode.parentNode;
for(i=0; i<product_codes.length; i++){
if(product_codes[i] == this.getAttribute("data-productCode"))
{product_codes.splice(i,1);
quantities.splice(i,1);
console.log(product_codes);
console.log(quantities);
break;
}
}
div.removeChild(this.parentNode);
}
css Code
.delete{
display: inline-block;
width: 19px;
height: 18px;
text-align: center;
background-color: #D2D2D2;
border-radius: 50%;
font-size: 12px;
line-height: 18px;
cursor: pointer;
}

Create a popup window in plain javascript

In a specific page a user will press a button but on button press before the actual processing, I need occasionally to present to the user a list of options to select the appropriate one and use that selection in order to be able to proceed the processing.
So essentially I need to display a pop-up window that shows a select box with available options and get the user's selection and then continue processing.
So to do this I found that I need a combination of window->open/prompt/showModalDialog
I found a way to present a pop-up window to the user with the options via
var newWindow = window.open("", null, "height=200,width=400,status=yes,toolbar=no,menubar=no,location=no");
newWindow.document.write("<select>");
newWindow.document.write("<option>");
newWindow.document.write(obj);
newWindow.document.write("</option>");
newWindow.document.write("</select>");
Example for passing just one option.
But I can not seem to find how to get back the selection.
The prompt on the other hand returns the selection, but I don't think I can make it display my select.
The showModalDialog returns the selection, but seems to expect another web page as a parameter. So it is not suitable for me.
How can I create my pop-up using plain javascript?

Here is a simple solution that will allow you to fetch value from opened window. All you need is to inject JavaScript code into opened window that will interact with the parent window using window.opener:
HTML
<input id="value" />
<button onclick="openWindow();">Open</button>
JavaScript
function openWindow() {
var i, l, options = [{
value: 'first',
text: 'First'
}, {
value: 'second',
text: 'Second'
}],
newWindow = window.open("", null, "height=200,width=400,status=yes,toolbar=no,menubar=no,location=no");
newWindow.document.write("<select onchange='window.opener.setValue(this.value);'>");
for(i=0,l=options.length; i<l; i++) {
newWindow.document.write("<option value='"+options[i].value+"'>");
newWindow.document.write(options[i].text);
newWindow.document.write("</option>");
}
newWindow.document.write("</select>");
}
function setValue(value) {
document.getElementById('value').value = value;
}
Working example here: http://jsbin.com/uqamiz/1/edit

The easiest way is to have a superimposed div with a a high z-index, with transparent background acting as an overlay. You could then have another div which is centered above the overlay(with higher z-index) and containing the list markup
CSS
#shim {
opacity: .75;
filter: alpha(opacity=75);
-ms-filter: "alpha(opacity=75)";
-khtml-opacity: .75;
-moz-opacity: .75;
background: #B8B8B8;
position: absolute;
left: 0px;
top: 0px;
height: 100%;
width: 100%;
z-index:990
}
#msgbx {
position: absolute;
left: 50%;
top: 50%;
height: 150px;
width: 350px;
margin-top: -75px;
margin-left: -175px;
background: #fff;
border: 1px solid #ccc;
box-shadow: 3px 3px 7px #777;
-webkit-box-shadow: 3px 3px 7px #777;
-moz-border-radius: 22px;
-webkit-border-radius: 22px;
z-index:999
}
HTML
<div id="shim"></div>
<div id="msgbx">inject list markup here</div>
To show popup
document.getElementById('shim').style.display=document.getElementById('msgbx').style.display ="block";
To Hide
document.getElementById('shim').style.display=document.getElementById('msgbx').style.display ="none";