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jQuery to hide and show textarea

I have a textarea that I want to show/hide when ever I click a button
and also I need it to target this way because ill be using it in an undefined number of times
SAMPLE IMAGE HERE
SAMPLE IMAGE HERE
here is the HTML that I want to
<div class="input-group mb-3">
<input type="text" name="tname[]" class="form-control" required placeholder="req. for">
<button class="btn btn-outline-secondary buttonMultipleNameReq" type="button" id="button-addon2"><i class="bi bi-plus-circle"></i></button>
</div>
<textarea class="form-control" id="multipleNameReq"></textarea>
and here is the script I try to use hiding/Showing it
$('body').on('click', '.buttonMultipleNameReq',function(){
const element1 = $(this);
const target1 = element1.parent().parent().find("#multipleNameReq");
console.log(target1);
if (target1.style.display === "none") {
target1.style.display = "block";
} else {
target1.style.display = "none";
}
})

the accepted answer will work fine for nonduplicate id of textarea or any other elements, but as you have shown in your image if you want to work this for multiple textarea or any elements I suggest you use the class attribute instead of the id attribute, here is the explanation for why to not use same id multiple times,
Duplicate IDs are common validation errors that may break the accessibility of labels, e.g., form fields, and table header cells.
To fix the problem, change an ID value if it is used more than once to be sure each is unique.
here below is some piece of code that may help you to get what are you looking for
$('body').on('click', '.buttonMultipleNameReq',function(e){
let textArea = $(e.target).parent().parent().find('textarea');
if(textArea.css('display') == "block"){
textArea.hide()
}else{
textArea.show()
}
})
.multipleNameReq{
display:block
}
<div>
<div class="input-group mb-3">
<input type="text" name="tname[]" class="form-control" required placeholder="req. for">
<button class="btn btn-outline-secondary buttonMultipleNameReq" type="button" id="button-addon2">hide/show</button>
</div>
<textarea class="form-control multipleNameReq"></textarea>
</div>
<div>
<div class="input-group mb-3">
<input type="text" name="tname[]" class="form-control" required placeholder="req. for">
<button class="btn btn-outline-secondary buttonMultipleNameReq" type="button" id="button-addon2">hide/show</button>
</div>
<textarea class="form-control multipleNameReq"></textarea>
</div>
<div>
<div class="input-group mb-3">
<input type="text" name="tname[]" class="form-control" required placeholder="req. for">
<button class="btn btn-outline-secondary buttonMultipleNameReq" type="button" id="button-addon2">hide/show</button>
</div>
<textarea class="form-control multipleNameReq"></textarea>
</div>
<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.6.1/jquery.min.js"></script>
Using toggle function
here below is simpler code using jquery toggle, here you can read about toggle
$('body').on('click', '.buttonMultipleNameReq',function(e){
$(e.target).parent().parent().find('textarea').toggle();
})
<div>
<div class="input-group mb-3">
<input type="text" name="tname[]" class="form-control" required placeholder="req. for">
<button class="btn btn-outline-secondary buttonMultipleNameReq" type="button" id="button-addon2">hide/show</button>
</div>
<textarea class="form-control multipleNameReq"></textarea>
</div>
<div>
<div class="input-group mb-3">
<input type="text" name="tname[]" class="form-control" required placeholder="req. for">
<button class="btn btn-outline-secondary buttonMultipleNameReq" type="button" id="button-addon2">hide/show</button>
</div>
<textarea class="form-control multipleNameReq"></textarea>
</div>
<div>
<div class="input-group mb-3">
<input type="text" name="tname[]" class="form-control" required placeholder="req. for">
<button class="btn btn-outline-secondary buttonMultipleNameReq" type="button" id="button-addon2">hide/show</button>
</div>
<textarea class="form-control multipleNameReq"></textarea>
</div>
<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.6.1/jquery.min.js"></script>

Since you're using jQuery you could use it's syntax:
To get element:
$('#multipleNameReq');
To Check if element is visible and not hidden:
$('#multipleNameReq').is(":visible");
To Show:
$('#multipleNameReq').show();
To Hide:
$('#multipleNameReq').hide();
A solution to add into your click function would look like:
if ($('#multipleNameReq').is(":visible")) {
$('#multipleNameReq').hide();
} else {
$('#multipleNameReq').show();
}

To access and change the style of an element you need to use the css function.
$('body').on('click', '.buttonMultipleNameReq', function() {
const element1 = $(this);
const target1 = element1.parent().parent().find("#multipleNameReq");
if (target1.css('display') === "none") {
target1.css('display', "block");
} else {
target1.css('display', "none");
}
})
<div>
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<div class="input-group mb-3">
<input type="text" name="tname[]" class="form-control" required placeholder="req. for">
<button class="btn btn-outline-secondary buttonMultipleNameReq" type="button" id="button-addon2">Click<i class="bi bi-plus-circle"></i></button>
</div>
<textarea class="form-control" id="multipleNameReq" style="display: block;"></textarea>
</div>

Submit Laravel form after Authentication

I have a modal form with tabs. I use AJAX to submit the form, which works fine. I want the form should be public: if the user is not logged in it should display the login, and submit the form after logging in using AJAX and Laravel.
public function acServices()
{
$id = Auth::user()->id;
$post = new Ac_services_request ;
$post->user_id = $id;
$post->services = Request::input('service');
$post->ac_type = Request::input('ac_type');
$post->type_services = Request::input('ac_services');
$post->no_of_ac = Request::input('no_of_ac');
$post->other_info = Request::input('other_info');
$post->address = Request::input('addr');
$post->landmark = Request::input('landmark');
$post->lga = Request::input('lga');
$post->specific_location = Request::input('specific_location');
$post->date = Request::input('date');
$post->time = Request::input('time');
$post->mobile = Request::input('');
$post->code = $string."".$id;
$post->save();
return 'success';
}
<div class="modal fade ac-services ativa-scroll" data-backdrop="static"
data-keyboard="false" id="ac-services" tabindex="-1" role="dialog">
<div class="modal-dialog " role="document">
<div class="modal-content " >
<button type="button" class="close" data-dismiss="modal" aria-
label="Close">
<span style="color: white;" aria-hidden="true">×</span>
</button>
<form class="contact" >
<div class="setup-content" id="step-1">
<div class="form-group input-group col-md-9">
<p>Select AC type</p>
<select required="required" class="form-control lg" name="ac_type">
<option></option>
<option>Window AC(S)</option>
<option>Split AC(S)</option>
<option>Window AC(S) and Split AC(S)</option>
</select>
</div>
<input type="hidden" name="service" value="A/C Repairs and Services">
<div class="form-group input-group col-md-9">
<p>Select type of service you need</p>
<select required="required" class="form-control lg" name="ac_services">
<option></option>
<option>Installation of new AC</option>
<option>General Cleaning</option>
<option>Un-installation of existing AC</option>
<option>Repairs (Diagnosis and rectification of AC(s)</option>
</select>
</div>
<button class="btn btn-primary nextBtn btn-lg pull-right"
type="button">Next</button>
</div>
<div class="row setup-content" id="step-2">
<div class="form-group input-group col-md-9">
<p>How many AC(s)</p>
<input type="number" required="required" class="form-control lg"
name="no_of_ac" placeholder="Enter Number of AC e.g 2" >
</div>
<div class="form-group ">
<p>Other Informations</p>
<textarea required="required" rows="5" cols="65" name="other_info">
</textarea>
</div>
<button class="btn btn-primary prevBtn btn-lg pull-left"
type="button">Back</button>
<button class="btn btn-primary nextBtn btn-lg pull-right"
type="button">Next</button>
</div>
<div class="row setup-content" id="step-3">
<div class="form-group input-group col-md-9">
<p>Where do you need the services ?</p>
<span>House/Flat No, Street, City</span>
<input type="text" required="required" class="form-control lg"
name="addr">
</div>
<div class="form-group input-group col-md-9">
<span>Landmark</span>
<input type="text" required="required" class="form-control lg"
name="landmark">
</div>
<div class="form-group input-group col-md-9">
<span>LGA</span>
<input type="text" required="required" class="form-control lg"
name="lga" >
</div>
<div class="form-group input-group col-md-9">
<span>Any other specific location direction/description?</span>
<input type="text" required="required" class="form-control lg"
name="specific_location"><br>
<span><b> Note: Accurate location helps us reach you promptly </b>
</span>
</div>
<input type="hidden" name="userid" value="1">
<button class="btn btn-primary prevBtn btn-lg pull-left"
type="button">Back</button>
<button class="btn btn-primary nextBtn btn-lg pull-right"
type="button">Next</button>
</div>
<div class="row setup-content" id="step-4">
<div class="form-group input-group col-md-9">
<p>Pick Date</p>
<input type="date" required="required" class="form-control lg"
name="date"> </div>
<div class="form-group ">
<p>Select Service Time</p>
<select required="required" class="form-control lg" name="time">
<option></option>
<option>10:00am - 11:00am</option>
<option>11:00am - 12:00pm</option>
<option>12:00pm - 1:00pm</option>
<option>1:00pm - 2:00pm</option>
<option>2:00pm -3:00pm</option>
<option>3:00pm - 4:00pm</option>
<option>4:00pm - 5:00pm</option>
</select>
</div>
<button class="btn btn-primary prevBtn btn-lg pull-left" type="button">Back</button>
<button class="btn btn-primary prevBtn btn-lg pull-right" id="submit" data-target=".success">submit</button>
</div>
<script>
$('#ac-services').on('hidden.bs.modal', function () {
location.reload();
})
$(function() {
$("button#submit").click(function(){
$.ajax({
url: 'ac-booked-service',
type: "post",
data: $('form.contact').serialize(),
beforeSend: function() {
$empty = $('form.contact').find("input").filter(function() {
return this.value === "";
});
if($empty.length) {
alert('Please fill all the field');
return false;
}else{
return true;
};
},
success: function (result) {
window.location.replace('/user/dashboard');
},
error: function(){
alert("failure");
}
});
});
});
</script>

It might be beneficial for you to follow a few tutorials to gain some understanding around this concept.
Simple and Easy Laravel Login Authentication
Laravel Docs on Auth
Auth0 Tutorial

JavaScript - Taking user input and using in calculation to validate value

I have a modal that allows users to 'refuel' by filling out a form where they can input the amount of fuel to add, however the maximum fuel amount is 180 litres, so if the existing fuel is 170 litres (the existing fuel value will be retrieved from a database), and the user tries to add 20 litres, it should produce an error. I've got some code already, but it's not producing the error. If anyone could point out the issue it would be greatly appreciated.
$(document).ready(function() {
$('#fuel').blur(function() {
if (!ValidateFuel()) {
e.preventDefault();
}
});
$('#auth_form8').on('submit', function(e) {
if (!ValidateFuel()) {
e.preventDefault();
}
});
});
function ValidateFuel() {
var IsValid = false;
var fuel_to_add = $('#fuel').val();
var current_fuel = '100'; // this value will be retrieved from database
var fuel_once_added = Number(current_fuel) + Number(fuel_to_add);
if (fuel_once_added > 180) {
$('#alertInvalidFuel').show();
IsValid = false;
} else {
$('#alertInvalidFuel').hide();
IsValid = true;
}
return IsValid;
}
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<a class="btn btn-success" role="button" data-target="#confirm-refuelG-EEGU" data-toggle="modal"><em class='fa fa-plus'></em></a>
<div id="confirm-refuelG-EEGU" class="modal fade" role="dialog">
<div class="modal-dialog">
<div class="modal-content">
<div class="modal-header">
<button type="button" class="close" data-dismiss="modal">×</button>
<h4 class="modal-title">Add Fuel G-EEGU</h4>
</div>
<div class="modal-body">
<form name="auth_form8" id="auth_form8" method="post" action="action_refuel.php">
<p>This action cannot be undone.</p>
<hr>
<input class="form-control" id="aircraft_id" name="aircraft_id" value='1' type="hidden">
<div class="form-group" name="fuel" id="fuel">
<label for="auth_code8" class="control-label">
Fuel to add:</label>
<input class="form-control" id="fuel" name="fuel" type="number" required>
</div>
<div style="display:none;" class="alert alert-danger" id="alertInvalidFuel">
<p>Fuel will exceed 180 litres.</p>
</div>
<hr>
<div class="form-group has-feedback" name="auth_code8" id="auth_code8">
<label for="auth_code8" class="control-label">
Authorisation Code</label>
<input class="form-control" id="auth_code_input8" autocomplete="new-password" name="refuel_auth_code" type="password" required>
<span class="form-control-feedback glyphicon" id="iconBad8"></span>
</div>
</div>
<div class="modal-footer">
<button type="button" class="btn btn-default" data-dismiss="modal">Close</button>
<button type="submit" id="submit" class="btn btn-success">Add Fuel</button>
</div>
</form>
</div>
</div>
</div>
JSFiddle Demo

The problem is here:
<div class="form-group" name="fuel" id="fuel">
<label for="auth_code8" class="control-label">Fuel to add:</label>
<input class="form-control" id="fuel" name="fuel" type="number" required>
</div>
Your div has id="fuel" and so does the input. Remove the id from the div or make it unique. Also, there is no name attribute for div elements, you should remove that as well.

JavaScript Get the closest element and input a value to the input

I have a piece of HTML that looks like this
<div id="imageContent">
<div class="row">
<div class="col-md-5 col-md-offset-1">
<div class="input-group form-group">
<input type="text" class="form-control file-src" id="file1" placeholder="File Thumb Source">
<span class="input-group-btn">
<button class="btn btn-info modal-btn" type="button" data-toggle="modal" data-target="#myModal">Select File</button>
</span>
</div>
</div>
<div class="col-md-5">
<div class="form-group">
<input class="form-control" type="text" placeholder="http://postbackurl.com"/>
</div>
</div>
</div>
</div>
Above that I have a button that looks like this
<div class="row text-center">
<div class="col-md-12">
<button type="button" class="btn btn-wd btn-info btn-fill btn" onclick="add_fields();" rel="tooltip">Add More Images</button>
</div>
</div>
Once that button is pressed I run a function to get the #imageContent div and append a new row with the same as before.
<script type="text/javascript">
function add_fields() {
var div = document.getElementById("imageContent");
div.insertAdjacentHTML('afterend','<div class="row"><div class="col-md-5 col-md-offset-1"> <div class="input-group form-group"><input type="text" class="form-control file-src" id="file1" placeholder="File Thumb Source"><span class="input-group-btn"> <button class="btn btn-info modal-btn" type="button" data-toggle="modal" data-target="#myModal">Select File</button> </span> </div> </div> <div class="col-md-5"> <div class="form-group"> <input class="form-control" type="text" placeholder="http://postbackurl.com"/> </div> </div> </div>');
}
</script>
This works as expected and adds a new row into the imageContent div.
See picture. If I click Select Image, it launches a modal window with all of my images, and when I select one, it runs this piece of js.
onInsertCallback: function (obj){
/** Populate the src **/
currentModalBtn.closest('.input-group').find('input.file-src').val(obj.src);
$('#myModal').hide();
}
The problem I am having is that it does not get the correct input area to insert the value into, and instead always updates the first element. The full js code looks like this.
$(document).ready(function() {
jQuery(document).ready(function() {
/** Keep track of which modal button was clicked. **/
var currentModalBtn;
jQuery('.modal-btn').click(function() {
currentModalBtn = jQuery(this);
});
jQuery('.laradrop').laradrop({
onInsertCallback: function(obj) {
/** Populate the src **/
currentModalBtn.closest('.input-group').find('input.file-src').val(obj.src);
$('#myModal').hide();
},
onErrorCallback: function(jqXHR, textStatus, errorThrown) {
// if you need an error status indicator, implement here
//Swal here
swal({
title: 'Error!',
text: 'An Error Occurred',
type: 'error',
showConfirmButton: false,
showCancelButton: true
});
},
onSuccessCallback: function(serverData) {
//
}
});
});
});
My question is, how can I ensure that I get the right input field that the button was clicked on to update that fields value and make sure the others stay as they were.

move var currentModalBtn; outside the ready so it is available to the callback(s)
Also have only one
$(document).ready(function() {
jQuery(document).ready(function() {
you have a mess of jQuery/$ and so on - this will likely work better:
function add_fields() {
var $div = $("#imageContent");
$div.append('<div class="row"><div class="col-md-5 col-md-offset-1"> <div class="input-group form-group"><input type="text" class="form-control file-src" id="file1" placeholder="File Thumb Source"><span class="input-group-btn"> <button class="btn btn-info modal-btn" type="button" data-toggle="modal" data-target="#myModal">Select File</button> </span> </div> </div> <div class="col-md-5"> <div class="form-group"> <input class="form-control" type="text" placeholder="http://postbackurl.com"/> </div> </div> </div>');
}
var currentModalBtn;
$(function() {
/** Keep track of which modal button was clicked. **/
$("#imageContent").on("click",".modal-btn", function() {
currentModalBtn = $(this);
});
$("#test").on("click",function() {
currentModalBtn.closest('.input-group').find('input.file-src').val("hello");
$('#myModal').hide();
});
});
<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.9.1/jquery.min.js"></script>
<div class="row text-center">
<div class="col-md-12">
<button type="button" class="btn btn-wd btn-info btn-fill btn" onclick="add_fields();" rel="tooltip">Add More Images</button>
</div>
</div>
<div id="imageContent">
<div class="row">
<div class="col-md-5 col-md-offset-1">
<div class="input-group form-group">
<input type="text" class="form-control file-src" id="file1" placeholder="File Thumb Source">
<span class="input-group-btn">
<button class="btn btn-info modal-btn" type="button" data-toggle="modal" data-target="#myModal">Select File</button>
</span>
</div>
</div>
<div class="col-md-5">
<div class="form-group">
<input class="form-control" type="text" placeholder="http://postbackurl.com"/>
</div>
</div>
</div>
</div>
<button type="button" id="test">
click
</button>

JQuery .click function only works after second click if I close a modal

i have a page where I have two buttons, one that opens a modal, and another one that only submits.
I have a .click event on the second button. If i go on the page and click the second button the click event goes fine, BUT if i first open the modal, close it and then i hit the second button, the first time does nothing and the second time it fires the .click event.
I would like to always fire the click event.
this is my code
$(document).ready(function(){
var focusout = false;
$(".prueba").click(function () {
if (focusout == false) {
focusout = true;
return;
}
});
var validator =$('#form1').validate(
{
ignore: "",
rules: {
parametros: {
required: function() { return focusout == true; },
},
terminos: {
required: function() { return focusout == true; },
}
},
highlight: function(element) {
$(element).closest('.grupo').addClass('has-error');
},
unhighlight: function(element) {
$(element).closest('.grupo').removeClass('has-error');
}
});
$(".cancel").click(function() {
validator.resetForm();
});
}); // end document.ready
button 1:
<button type="submit" class="btn btn-primary" name="nueva_articulo"><i class="icon-plus"></i> Nuevo Item</button>
button 2:
<button type="submit" class="btn btn-primary prueba" name="buscar">Buscar</button>
full form:
<form action="" method="post" id="form1" enctype="multipart/form-data">
<p>
<button type="submit" class="btn btn-primary" name="nueva_articulo"><i class="icon-plus"></i> Nuevo Item</button>
<button type="submit" class="btn btn-primary" name="carga_masiva"><i class="icon-arrow-up"></i> Carga Masiva</button>
</p>
<br>
<div class="col-lg-1 grupo">
</div>
<div class="col-lg-10 grupo">
<div class="panel panel-default pagination-centered">
<div class="panel-heading">Búsqueda en Catálogo</div>
<div class="panel-body">
<div class="form-group ">
<div class="col-lg-6 grupo">
<input type="text" class="form-control " id="terminos" name="terminos" placeholder="Términos de búsqueda">
</div>
<div class="col-lg-6 grupo">
<select id="e1" name="parametros" style=" width:80%">
<option></option>
<option value="1" >Autor</option>
<option value="2" >Título</option>
</select>
</div>
</div>
<br> <br>
<div style="text-align:center">
<button type="submit" class="btn btn-primary prueba" name="buscar">Buscar</button>
</div>
</div>
</div>
</div>
<div class="col-lg-1 grupo">
</div>
<!-- Modal -->
<div class="modal fade" id="myModal" name="myModal" data-backdrop="static" role="dialog" aria-labelledby="myModalLabel" aria-hidden="true">
<div class="modal-dialog modal-wide">
<div class="modal-content">
<div class="modal-header">
<button type="submit" class="close cancel" data-dismiss="modal" aria-hidden="true">×</button>
{if isset($smarty.post.nueva_articulo) }
<h4 class="modal-title">Nueva Articulo</h4>
{/if} </div>
<div class="modal-body">
{if isset($smarty.post.nueva_articulo) }
<div class="form-group">
<div class="col-lg-12 grupo">
<label for="art_titulo" class="control-label">Título</label>
<input type="text" class="form-control input-sm" name="art_titulo">
</div>
</div>
<div class="form-group">
<div class="col-lg-12 grupo">
<label for="art_enlace" class="control-label">Enlace</label>
<input type="text" class="form-control input-sm" name="art_enlace">
</div>
</div>
<div class="form-group">
<div class="col-lg-12 grupo">
<label for="aut_id" class="control-label">Autor(es)</label>
<input type='hidden' id='e13' name="autores" style='width:100%'/>
</div>
</div>
<div class="form-group">
<div class="col-lg-12 grupo">
<label for="art_contenido" class="control-label">Contenido</label>
<textarea class="form-control input-sm" name="art_contenido" rows="5" ></textarea>
</div>
</div>
<div class="form-group">
<div class="col-lg-12 grupo">
<label for="etiquetas" class="control-label">Etiquetas</label>
<input type="text" id="e12" name="etiquetas" style="width:100%">
</div>
</div>
<div class="form-group">
<div class="col-lg-12 grupo">
<label for="foto" class="control-label">Imagen</label>
<div class="input-group">
<span class="input-group-btn">
<span class="btn btn-default btn-file">
Buscar… <input type="file" name="foto">
</span>
</span>
<input type="text" class="form-control" name="nombre" readonly="">
</div>
</div>
</div>
<div class="form-group">
<div class="col-lg-12 grupo">
<div class="checkbox">
<label>
<input type="checkbox" name="rating" value="si"> Habilitar Rating y Reviews
</label>
</div>
<div class="checkbox">
<label>
<input type="checkbox" name="redes" value="si"> Habilitar Compatir en Redes Sociales
</label>
</div>
</div>
</div>
{/if}
</div>
<div class="modal-footer">
<button type="submit" class="btn btn-default cancel" data-dismiss="modal" name="cerrar">Cerrar</button>
{if isset($smarty.post.nueva_articulo) }
<button type="submit" class="btn btn-primary" name="insertar_articulo">Guardar Cambios</button>
{/if}
</div>
</div>
</div>
<!-- /.modal-content -->
</div>
<!-- /.modal-dialog -->
<!-- /.modal -->
</form>

They are both of type submit. You should only have 1 submit button on a form
Button 1 could just be a button
<button class="btn btn-primary" name="nueva_articulo"><i class="icon-plus"></i> Nuevo Item</button>

If you want, you can create a Form Object in javascript and generate it dynamically. That will do that you don't need to depend of the submit and forms, just fill the form object with the inputs that you want programatically (that even accept files or images).
But anyway, it seems that you have more than one click events on the same button if the one you want is triggering at the second attempt. You could try to play with event.preventDefault or $.unbind.
As you said taht you need to submit the inputs of the modal, try to place the content of the modal inside the tag and remove the submit type of one of the buttons.