Develop Reference

How to update the actual true value="" of a input field when another field is entered

I have reviewed tonnes of articles and all solutions only update the visually displayed value as opposed to the actual value within the input tag itself.
When I click on a button a modal appears with a text input to enter a code. We will call it input1
Upon entering the code and exiting the modal the button updates to the code entered and a hidden input value gets updated as well. However the actual tags value="" remains the same.
I have tried numerous ways but all seem to only update the visual and not the true value.
Here is what I have so far but it only updates the value you see in the browser not within the tag itself.
let promoModal = document.getElementById("promoModal");
let promoBtn = document.getElementById("promo");
let promoSpan = document.getElementsByClassName("promoClose")[0];
promoBtn.onclick = function() {
promoModal.style.display = "block";
}
promoSpan.onclick = function() {
promoModal.style.display = "none";
}
window.onclick = function(event) {
if (event.target == promoModal) {
promoModal.style.display = "none";
}
}
function updatePromo() {
let promoValue = document.getElementById("promo-value");
let producePromo = document.getElementById("promo");
let copyPromo = document.getElementById("promo-value-copy");
producePromo.innerHTML = promoValue.value;
copyPromo.innerHTML = promoValue.value;
}
/* THE MODAL */
.modal {
display: none;
position: fixed;
z-index: 1;
padding-top: 100px;
left: 0;
top: 0;
width: 100%;
height: 100%;
overflow: auto;
.modal-content {
background-color: #fefefe;
margin: auto;
padding: 5px 20px;
border: 1px solid #888;
width: 280px;
position: relative;
}
}
/* The Close Button */
.adultClose,
.promoClose {
color: #aaaaaa;
position: absolute;
right: 5px;
top: 0px;
font-size: 22px;
font-weight: bold;
cursor: pointer;
}
.close:hover,
.close:focus {
color: #000;
text-decoration: none;
cursor: pointer;
}
<button id="promo" type="button" class="promo">
<span class="promoCode">Promo Code +</span>
</button>
<input type="hidden" id="promo-value-copy" value="test">
<!-- Promo Modal -->
<div id="promoModal" class="modal">
<div class="modal-content">
<span class="promoClose">×</span>
<input type="text" class="promo-value" id="promo-value" value="" placeholder="Promotional code" onchange="updatePromo()">
</div>
</div>
I stripped the styling to get to the meat and potatoes.
How can I update the actual value="test" to the new value using javascript?

The innerHTML is used for changing HTML content, so for instance you can use it for changing the content of a paragraph <p id="text-to-change"></p>.
To change the input value you can use the .value property of the object.
Try to change the following line copyPromo.innerHTML = promoValue.value; with copyPromo.value = promoValue.value;

You need to change the value like this:
document.getElementById("promo-value-copy").value = promoValue.value;

so going with Barmar's suggestion I was able to update my updatePromo function to both produce the value as well as update the DOM value.
Here is the updated function. I hope it helps the community.
function updatePromo() {
let promoValue = document.getElementById("promo-value");
let producePromo = document.getElementById("promo");
let copyPromo = document.getElementById("promo-value-copy");
producePromo.innerHTML = promoValue.value;
copyPromo.innerHTML = promoValue.value;
copyPromo.setAttribute("value", promoValue.value); // suggestion given by Barmar
}
I had to leave the other element as it adds the text after the form field which is actually needed for this project however typically would not be needed.

Make HTML 'value' attribute a link

I'd like to turn the output of the HTML input value into a clickable link.
Currently, it looks like: <input type="email" class="form-control" name="contactEmail" value="<?php echo $row_rsContactDetails['contactEmail']; ?>">
I've tried using PHP and JavaScript to create the link but this just ended up displaying the HTML code verbatim.
Can it be done, and if so, how?

You don't need to enter the link to output as value, you need a workaround
here is my suggestion:
https://jsfiddle.net/4w58ed3o/1/
HTML:
<div class="box">
<input type="email" id="myinput" value="default#email.com">
</div>
<button id="myswitcher">Edit</button>
JS:
let input = document.querySelector('#myinput');
let link = document.querySelector('#mylink');
let myswitcher = document.querySelector('#myswitcher');
let setLink = () => {
link.innerHTML = input.value;
link.setAttribute('href', 'mailto:' + input.value);
}
input.addEventListener('input', () => {
setLink();
});
setLink();
myswitcher.addEventListener('click', () => {
document.querySelector('.box').classList.add('editable');
input.focus();
});
input.addEventListener('blur', () => {
document.querySelector('.box').classList.remove('editable');
});
CSS
input, a {
display: inline-block;
padding: 0;
padding: 10px;
margin: 0;
text-decoration: none;
font-size: 16px;
font-family: inherit;
box-shadow: none;
border: none;
line-height: 1.2;
background-color: transparent;
}
input:focus, a:focus {
outline: 1px solid #000;
}
.box {
position: relative;
display: inline-block;
}
input {
position: absolute;
box-sizing: border-box;
top: 0;
left: 0;
width: 100%;
}
.box input {
opacity: 0;
pointer-events: none;
}
.box.editable a {
opacity: 0;
pointer-events: none;
}
.box.editable input {
opacity: 1;
pointer-events: auto;
}
I made a working example of implementation for you, substitute data from the server and be inspired by my solution.

You could use javascript/jquery to achieve the same.
<html>
<body>
<input type="email" class="form-control" name="contactEmail" value="LINK HERE">
<span id="output"></span>
<script>
$(document).ready(function(){
var str = "LINK TITLE HERE";
var valueToLink = $(".form-control").val() //fetches the string to be converted to
//link
var result = str.link(valueToLink);
document.getElementById("output").innerHTML = result;
})
</script>
</body>
</html>
You could also hook up the above logic to an event call, e.g, button click.

I don't think it is possible, but you can try this. And you can put <?php echo $row_rsContactDetails['contactEmail']; ?> in place to "SOME TEXT" as well.
SOME TEXT

change size of div function doesn't work

I have a function that alters the size of a div when I click on it. Now I have to write the onclick command in my html page, but I want it to stand in the extern .js file.
Now in html:
<div id="box1" class="kaesten" onclick="changeSize('box1')"> Title 1 </div>
What I want:
<div id="box1" class="kaesten" > Title 1 </div>
Tried something in jquery but it didn't work:
function changeSize(id) {
var elem = document.getElementById(id);
var currentAbsoluteElem = document.getElementById('dummy');
var text = elem.innerHTML;
currentAbsoluteElem.innerHTML = text;
currentAbsoluteElem.setAttribute('style', 'display:block');
/*Extra styling neeed to be done here*/
}
var elems = document.getElementsByClassName('kaesten');
for (var i = 0; i < elems.length; i++) {
elems[i].onclick = function() {
changeSize(this.id);
}
}
var absoluteCl = document.getElementsByClassName('absoluteclass');
absoluteCl[0].onclick = function() {
console.log(document.getElementsByClassName('absoluteclass'))
document.getElementsByClassName('absoluteclass')[0].setAttribute('style', 'display:none');
}
$(document).ready(function() {
$('.kaesten').click(function() {
changeSize($(this).attr('id'));
});
});
.kaesten {
width: 240px;
height: 300px;
background-color: darkgrey;
background-position: center;
background-repeat: no-repeat;
text-shadow: 0px 0px 3px #000;
border: 5px solid #F0F8ff;
vertical-align: top;
text-shadow: 3px 3px 4px #777;
float: left;
margin-left: 30px;
}
.absoluteclass {
position: absolute;
background-color: darkgrey;
width: 600px;
height: 600px;
left: calc(30%);
display: none;
}
<div id="box1" class="kaesten">title1</div>
<div id="box2" class="kaesten">title2</div>
<div id="box3" class="kaesten">title3</div>
<div id="box4" class="kaesten">title4</div>
<div id="dummy" class="absoluteclass"></div>
I know it works in the fiddle, but I don't know why it doesn't work on my homepage without writing the function in the div's.

I guess the problem is that you are trying to assign the onclick event handler before the DOM is actually rendered and ready. My suggestion is to wrap your "initialization code" inside a $(document).ready() method. As follows:
$(document).ready(function() {
// Apply the on click event handlers here, using jQuery or not
// For instance:
$('.kaesten').click(function() {
changeSize($(this).attr('id'));
});
});

if you want to pass the id from jquery to your function you should do it like this:
$(function(){
$(".kaesten").click(function(){
changeSize($(this).attr("id"));
});
});

you can use .css in jquery
$(function(){
$(".kaesten").click(function(){
$(this).css({'width' : '600px' , 'height' : '600px'});;
});
});

Javascript if slider value = 20 , display text

I made a slider using html and CSS which displays its value on change. I styled it using CSS using the <style> tag. I then went on to making the value display text. I want to display "Starter" when the slider hits 20.
I don't know what I am doing wrong and why this isn't working for me. I would like to use the most user-friendly version of this. If possible, please explain what I did wrong.
<html>
<style>
input[type="range"] {
-webkit-appearance: none;
width: 100%;
height: 25px;
border: 1px solid;
background-color: #0066FF;
}
input[type="range"]::-webkit-slider-thumb{
-webkit-appearance: none;
width: 25px;
height: 25px;
border: 1px solid;
background-color: #FFF;
}
</style>
</html>
<form oninput="amount.value=rangeInput.value">
<input type="range" id="rangeInput" name="rangeInput" step="20" value="0">
<div align="center" style="font-size:25px;"><output name="amount" for="rangeInput">0</output></div>
</form>
<script type="text/javascript">
var rangeInput = document.getElementById("rangeInput").value
if(rangeInput = 20){
text = "starter"
}
How can i get my slider to RESET on value 0?
at the moment, if i go from 20 to 0, it stays displaying Starter , i would like it to remove that. Is this possible?

you need '==' instead of '=' with your if statement
var rangeInput = document.getElementById("rangeInput").value
if(rangeInput == 20){
text = "starter"
}

See this question, as well: Range Slider Event Handler Javascript
You're going to want to look into event listeners-- you want to have a listener bound to the slider so that when the user changes the value, your code can respond accordingly.

You need to listen for onchange event. Also, you need to use == instead of = to compare values. The following code should work -
function updateValue() {
var rangeInput = document.getElementById("rangeInput").value
if (rangeInput == 20) {
document.getElementById("text").innerHTML = 'starter'
} else {
document.getElementById("text").innerHTML = ''
}
}
input[type="range"] {
-webkit-appearance: none;
width: 100%;
height: 25px;
border: 1px solid;
background-color: #0066FF;
}
input[type="range"]::-webkit-slider-thumb {
-webkit-appearance: none;
width: 25px;
height: 25px;
border: 1px solid;
background-color: #FFF;
}
<form oninput="amount.value=rangeInput.value">
<input type="range" id="rangeInput" name="rangeInput" step="20" value="0" onchange="updateValue()">
<div align="center" style="font-size:25px;">
<output name="amount" for="rangeInput">0</output>
</div>
</form>
<div id="text"></div>

Credit cards types for jessepollak's JQuery.Card.js

I am using jquery.card.js from jessepollak. It is awesome.
If anyone has experience with it, could you please tell me if there is an option to choose what types of credit card you want to support?
e.g.
//This is how I would like it to be...
var card = new Card({
supportedCardTypes: 'Visa, Master'; //I don't want DC or AMEX etc...
});
Is there any options like that? How do I achieve it?
Thank you.
Answer ------------------------------------------------------------
Turns out, only changing cardTypes as TMan suggested didn't work. But it is not about the fish, it is about giving me the idea of fishing. Following TMan's idea hacking into the script, I found adding this line would work:
Card.prototype.handlers = {
setCardType: function($el, e) {
//my modification here to support only Visa and Master!!
var cardType = e.data === 'mastercard' || e.data === 'visa' ? e.data : 'unknown';
//end of my modification!!
if (!QJ.hasClass(this.$card, cardType)) {
QJ.removeClass(this.$card, 'jp-card-unknown');
QJ.removeClass(this.$card, this.cardTypes.join(' '));
QJ.addClass(this.$card, "jp-card-" + cardType);
QJ.toggleClass(this.$card, 'jp-card-identified', cardType !== 'unknown');
return this.cardType = cardType;
}
},
You can just hack the library source code, quick and dirty NOT the best idea, or do something to initialise the handlers your way in your own code.
Thanks again.

Great ideas all around. Here's a way to take your addition to the handler and override it without having to hack at the library. This will persist future changes much better.
var setCardTypeOrig = Card.prototype.handlers.setCardType;
Card.prototype.handlers.setCardType = function($el, e) {
var allowedCards = ['mastercard','visa'];
if (allowedCards.indexOf(e.data) < 0) e.data = 'unknown';
setCardTypeOrig.call(this, $el, e);
}
Demo in Stack Snippets
var setCardTypeOrig = Card.prototype.handlers.setCardType;
Card.prototype.handlers.setCardType = function($el, e) {
var allowedCards = ['mastercard','visa'];
if (allowedCards.indexOf(e.data) < 0) e.data = 'unknown';
setCardTypeOrig.call(this, $el, e);
}
var card = new Card({ form: '.form-container form', container: '.card-wrapper' })
.form-container {
margin-top: 20px;
}
.form-container input {
font-family: 'Helvetica Neue', Helvetica, Helvetica, Arial, sans-serif;
float: left;
}
.form-container input.col-6 {
width: 50%
}
.form-container input.col-3 {
width: 25%
}
.form-container input[type="text"] {
background-color: #fff;
border: 1px solid #cccccc;
font-size: 0.875rem;
margin: 0 0 1rem 0;
padding: 0.5rem;
height: 2.3125rem;
-webkit-box-sizing: border-box;
-moz-box-sizing: border-box;
box-sizing: border-box;
}
.form-container .button {
cursor: pointer;
position: relative;
text-decoration: none;
text-align: center;
font-size: 0.875rem;
margin: 0 0 1rem 0;
padding: 0.5rem;
height: 2.3125rem;
color: #fff;
background-color: #008CBA;
border-width: 0;
}
.form-container .button:hover,
.form-container .button:focus {
background-color: #007295;
}
<script src="https://rawgit.com/jessepollak/card/master/lib/js/card.js"></script>
<div class="demo-container">
<div class="card-wrapper"></div>
<div class="form-container">
<form action="">
<input placeholder="Card number" type="text" name="number" class="col-6"/>
<input placeholder="Full name" type="text" name="name" class="col-6"/>
<input placeholder="MM/YY" type="text" name="expiry" class="col-3"/>
<input placeholder="CVC" type="text" name="cvc" class="col-3"/>
<input type="submit" value="Submit" class="button col-6"/>
</form>
</div>
</div>
To test it, you can look at the card payment definitions:
mastercard (55*) - works ✓
visa (4*) - works ✓
amex (37*) - doesn't ✓

Based on the Coffeescript file, I think your best bet would be to fork the library and then remove the cards you don't want to support from the cardTypes array so that all other numbers would show up as undefined.
https://github.com/jessepollak/card/blob/master/src/coffee/card.coffee
Or the following line in card.js:
https://github.com/jessepollak/card/blob/master/lib/js/card.js#L1134
Card.prototype.cardTypes = ['jp-card-amex', 'jp-card-dankort', 'jp-card-dinersclub',
'jp-card-discover', 'jp-card-jcb', 'jp-card-laser', 'jp-card-maestro',
'jp-card-mastercard', 'jp-card-unionpay', 'jp-card-visa', 'jp-card-visaelectron'];
You'll also probably want to modify the cardTemplate variable to remove the DOM nodes that no longer apply:
https://github.com/jessepollak/card/blob/master/src/coffee/card.coffee#L36