Develop Reference

How to control related text input element with a button?

I have a list of text-field + button that gets rendered dynamically. The user hits the button and I want to control the input field when a button is clicked.
I figure you could do something like:
<input id="1"><button onclick="doSomething(1)">Something</button>
<input id="2"><button onclick="doSomething(2)">Something</button>
<!--...-->
<input id="3"><button onclick="doSomething(3)">Something</button>
But wonder if there's a different and more sophisticated solution because the code I'm modifying passes an an anonymous function to onclick and I can't pass a unique ID like the method above.

This is very easy to achieve in vanilla Javascript (as most things). No jQuery overhead required here.
let buttons = [...document.getElementsByClassName('inputbutton')]
function doSomething(i) {
console.log(i);
}
for (const button of buttons) {
button.addEventListener('click', (e) => {
const i = e.target.previousSibling.id
doSomething(i);
})
}
<input id="1"><button class="inputbutton" type="button">Something</button>
<input id="2"><button class="inputbutton" type="button">Something</button>
<!--...-->
<input id="3"><button class="inputbutton" type="button">Something</button>

If you modify your dynamic HTML like the following and add this jQuery, you will be able to access the value of the previous input field.
var buttons = $(".inputs-and-buttons #button-after-input-field");
buttons.click(function() {
console.log($(this).prev("input").val());
});
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<div class="inputs-and-buttons">
<input id="1" value="1"><button id="button-after-input-field">Something</button>
<input id="2" value="2"><button id="button-after-input-field">Something</button>
<!--...-->
<input id="3" value="3"><button id="button-after-input-field">Something</button>
</div>

You can generate dynamic Id for both input field and button with index or row number or you can add custom attribute for row number as below.
You can generate dynamic related control with specific Id for textbox and button as well. e.g. txtFirstName_1, txtLastName_1, btnAdd_1. here textbox and button distinguished by its id and number after Underscore "_" .
$(function(){
// Register click on button
//here you can pass specific class name for button if all are have same functionality
$("button").click(function(e){
console.log(this);
var btnId=$(this).attr("id");
//console.log(btnId);
// Way 1
//Split btnId with "_" e.g btn_1 will splited with ["btn","1"]
var rowIndex=btnId.split("_")[1];
console.log(btnId.split("_"),rowIndex);
$("#txt_"+rowIndex).val("Upate value by btn"+rowIndex); // Or fetch value
// Way 2
// You can directly use custom attribute data-row and do your work
var rowIndex1=$(this).attr("data-row");//$(e).prop("data-row");
console.log(rowIndex1);
//$("#txt_"+rowIndex1).val("Upate value"); // Or fetch value
});
});
<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.9.1/jquery.min.js"></script>
<input id="txt_1" data-row="1"><button id="btn_1" data-row="1">Something</button>
<input id="txt_2" data-row="2"><button id="btn_2" data-row="2">Something</button>
<input id="txt_3" data-row="3"> <button id="btn_3" data-row="3">Something</button>

HIdden input value, non unique ID in form loop

I'm trying to prep forms with multiple (dynamic) inputs to insert correctly via ajax.
Currently, using my php loop, I have 4 div/forms. Each form has a starting input, and upon clicking the moreItems_add button, it dynamically adds another input, up to 10 per form/div.
This works fine. But I added a variable and console.log to log the value of my hidden input though, which should be getting an ID (<?php echo $ticker['ticker'] ?>) for each form, but it's currently only logging '1'. So when I clicked the button in the first form it looked right, but when I click the others, it's still 1. I think this is because I don't have a unique ID on the hidden input?
How can I change the way I'm keeping track of the hidden input so that I can make an ajax call that will only make an insert on the inputs of the given form WITH the correct ticker ID?
<?php foreach($tickerDisplays as $key => $ticker):?>
<form id="Items" method="post">
<label id="ItemLabel">Item 1: </label>
<input type="text" name="Items[]"><br/>
<button type="button" class="moreItems_add">+</button>
<input type="hidden" name="tickerID" id="tickerID" value="<?php echo $ticker['ticker'] ?>">
<input type="submit" name="saveTickerItems" value="Save Ticker Items">
</form>
<?php endforeach;?>
<script type="text/javascript">
$("button.moreItems_add").on("click", function(e) {
var tickerID = $('#tickerID').val();
var numItems = $("input[type='text']", $(this).closest("form")).length;
if (numItems < 10) {
var html = '<label class="ItemLabel">Item ' + (numItems + 1) + ': </label>';
html += '<input type="text" name="Items[]"/><br/>';
$(this).before(html);
console.log(tickerID);
}
});
</script>

To generate a unique id attribute you should append your ticker value from php to... the id attribute. Or if not the ticker value, at least something that makes it unique. But you don't really need to.
Since all your elements are wrapped in a form tag and are at the same level, you can find to which ticker corresponds the clicked button by finding the hidden input among its siblings:
var tickerID = $(this).siblings('input[name="tickerID"]').val();

input type required without a form tag

It only seems to work if the input type is in a form. Possible made a validation over javascript and not using the form tag?
Expected: if the text field is empty and i click submit it should come the message the the field is empty. Only submit if the field is field out
my script:
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<tr><td><input type="text" size"30" placeholder="put id" id="source" required>
<button type="submit" class="formButton" id="submit">Submit</button></td></tr>
<tr><td><input type="text" style="border:none" size="40" id="target" class="form" onClick="myFunct()" required></td></tr>
<tr><td><input type="text" style="border:none" size="40" id="target" class="form21" onClick="myFunct()" required></td></tr>
<script>
$(".formButton").click(function() {
$(".form21").show();
});
</script>
<script>
$('#submit').click(function(){
var source = $('#source').val();
$('#target').val('text' + ' text');
});
</script>
What i tired, but seams not to work
<script>
function myFunct(){
if (document.getElementById('source').validity.valid) { alert('missing name'); return }
</script>
thank you for your help

$('#target').val('text + ' text'); , the quotes are not properly closed and there is no text variable.
So this should be $('#target').val('text' + source );
In myFunct , there is no closing brace for the function.
ID is unique for a page. So do not use same ID's for multiple elements. In this example , target is used twice.
Reg the element's validity, when the element is invalid, the valid property will be false. So for the alert message , the condition should be (!document.getElementById('source').validity.valid) (i.e) to check if the element is not valid .
Submit button's click handler does not invoke myFunct func. So with the current code , the validator function will be called when the input element's with class "form" and "form21" . If you want the validation to be done on submit click , the validation code should be present for the button submit click handler.

View the value of selected radio button in an input field

As you can see in the above image. I have set of radio buttons, shown as picture. My client wanted to see picture instead of radio buttons. What also he wants is when user click an image (radio button), the value of that button should get displayed in the textarea field below. So user can see the value of selected radio button and also he should be able to edit it before he click save.
So user see what he selected and he can can also type before save.
I am using Jquery for this. So when user click the radio button, I capture the value the text of what user clicked and save in variable. Than I set the value of textarea field to that variable.
All works but the problem is when user select something and type something, and than if he click another picture, the field does not clear.
Question:
How I can copy the clicked value of clicked image and show in field and also allow user to type and if he click another image the field should become clear.
Here is my code
HTML
<div class="text-center">
<h4>Select reason</h4>
<form id="timer-reason">
<div class="row">
<div class="col-md-12">
<?php
while ($row = mysqli_fetch_assoc($timer_reasons)) {
?>
<label class="select-reason" value="<?php echo $row['description_tmr']; ?>" id="<?php echo $row['id_tmr']; ?>">
<input type="hidden" id="reason-id" value="<?php echo $row['id_tmr']; ?>">
<input type="radio" name="ReasonSelect" value="<?php echo $row['description_tmr']; ?>" />
<img src="../../css/timer-reasons/<?php echo $row['image_tmr']; ?>" style="width:30%;" class="TimerReason">
</label>
<?php
}
?>
<div class="form-group">
<textarea class="form-control" id="reason" value="" rows="2"></textarea>
</div>
</div>
</div>
</div>
JQUERY
$('input:radio').click(function() {
var reasonvalue=$(this).attr("value");
$("#reason").text(reasonvalue);
});

This is due to how the browser displays textarea's value that is supplied by putting text between the opening / closing tags, setting innerText / textContent
<textarea>Value between tags</textarea>
And a value supplied by the value property.
<textarea id="reason"></textarea>
document.getElementById('reason').value = "Value by property";
You can set the innerText / textContent multiple times, but as soon as it gets a set value property, which also happens when the user starts typing, changing the innerText / textContent will no longer change the visible text shown. The actual property is changed though.
var reasonTextarea = document.getElementById('reason');
var tcBtn = document.getElementById('tcTest');
var tcBtn2 = document.getElementById('tcTest2');
var propBtn = document.getElementById('propTest');
tcBtn.addEventListener('click',function(){
reason.textContent = "textContent set";
});
tcBtn2.addEventListener('click',function(){
reason.textContent = "textContent set again";
});
propBtn.addEventListener('click',function(){
reason.value = "value property set, now try typing something and/or hitting the change by textContent button again.";
});
<textarea id="reason" rows=5 cols=40>Test value 1</textarea>
<button id="tcTest">Click to change value by textContent</button>
<button id="tcTest2">Click to change value by textContent again</button>
<button id="propTest">Click to change value by property</button>
And this is what is happening with your code, you use jQuery's .text() method which changes the textContent of the textarea. Which will work as long as you never set the value property or the user never types in the textarea.
To combat this you should change the value of the textarea by changing the value property instead of the textContent property.
jQuery('#reason').val('New value');

Try this:
$(function () {
$('[name=ReasonSelect]') // bind event on all inputs with name RadioSelect
.on('change', function() { // on a change execute the function
var v = $('[name=ReasonSelect]:checked'); // get the selected value
$("#reason").val( v ); // put the value in #reason.
});
});

Try Below code. It Should work
$('input[type=radio]').click(function() {
var reasonvalue = $(this).attr("value");
$("#reason").val(reasonvalue);
});

How can a radio button trigger a counter and print output to the viewer's box?

How can I pass a javascript variable into the text value box below four radio buttons when one of them is selected.
//something like
var new ="somethign";
<a href="javascript:insertText(' var new ' ,'user_location');"
onClick="void(0)">Insert 'Hello'</a>
...so that when they click it, the counter and or a message is displayed in an empty form box...?
I want to output the contents of the variable. into a form-field entry type of box.

Using jQuery you could do something like this:
from your question i'm not getting much of idea.but if you want to put some text to div on click of radio button then may be try in this way:
<script>
$(document).ready(function(){
$('input[type=radio]').click(function() {
$('#viewer').html($(this).val());
});
});
</script>
<input type='radio' name ="r"value="something1">1
<input type='radio'name ="r" value="something2">2
<input type='radio' name ="r"value="something3">3
<input type='radio'name ="r" value="something4">4
<div id="viewer" ></>