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Why when I set data-backdrop = "false", it can't close modal when I click outside of modal?

My code like this :
<div class="container">
<h1 class="display-4 text-center mb-4">Bootstrap Modals</h1>
<div class="row mb-4">
<div class="col text-center">
<h3>The Basic Modal</h3>
<a href="#" class="btn btn-lg btn-success" data-toggle="modal" data-target="#basicModal" data-backdrop="false" data-keyboard="true" >Click to open Modal</a>
</div>
</div>
</div>
<br/><br/><br/><br/>
<div class="form-group">
<label for="exampleFormControlTextarea1">Input data</label>
<textarea class="form-control" id="exampleFormControlTextarea1" rows="3"> </textarea>
</div>
<!-- basic modal -->
<div class="modal fade" id="basicModal" tabindex="-1" role="dialog" aria-labelledby="basicModal" aria-hidden="true">
<div class="modal-dialog">
<div class="modal-content">
<div class="modal-header">
<h4 class="modal-title" id="myModalLabel">Basic Modal</h4>
<button type="button" class="close" data-dismiss="modal" aria-label="Close">
<span aria-hidden="true">×</span>
</button>
</div>
<div class="modal-body">
<h3>Modal Body</h3>
</div>
<div class="modal-footer">
<button type="button" class="btn btn-default" data-dismiss="modal">Close</button>
<button type="button" class="btn btn-primary">Save changes</button>
</div>
</div>
</div>
</div>
Demo and full code like this : https://codepen.io/trendingnews/pen/BayQLrm?editors=1010
I set data-backdrop="false" to remove backdrop
but it makes me unable to click on something. I have to click the close button on the modal to close on the modal.
how do I make it when I click on any element outside of modal, the modal automatically closed?
for example, I click textarea or other elements, the modal is automatically closed

As an extension to my comment, adding as an answer for anyone else that comes across this.
Problem:
You want to use a bootstrap modal, with no backdrop, and have the functionality that clicking away from the modal closes it.
Challenge:
The bootstrap modal backdrop has a listener on it so when clicked, it closes the modal. However, if there's no backdrop, then this cannot happen.
Solution:
Use a backdrop as normal but set it's color to transparent. Set the css background-color property on the backdrop e.g.
.modal-backdrop { background-color: transparent; }

css selectors, set property for all except two tags

i have a modal and i try to implement nested comments
now i want to send the parent comment id to child comment in modal
button that show modal:
<button class="btn btn-xs btn-light" data-target="#commentModal" data-toggle="modal" data-parent="3">پاسخ</button>
<div class="modal fade" id="commentModal" tabindex="-1" role="dialog" aria-labelledby="commentModal" aria-hidden="true" dir="rtl">
<div class="modal-dialog modal-lg" role="document">
<div class="modal-content">
<div class="modal-header">
<button aria-hidden="true" data-dismiss="modal" class="close" type="button">×</button>
<h4 id="modal-label-3" class="modal-title">ارسال نظر</h4>
</div>
<div class="modal-body">
<div class="respond-form" id="respond" style="padding-top: 0">
<form action="/comment" class="form-gray-fields">
{{ csrf_field() }}
<input type="hidden" name="parent_id" value="0">
<br>
<div class="row">
<div class="col-md-12">
<div class="form-group text-center">
<button class="btn btn-block" type="submit">ثبت دیدگاه</button>
</div>
</div>
</div>
</form>
</div>
</div>
</div>
</div>
</div>
i want to send value of data-parent in button, to "vlaue" attribute of input in modal
i see this for bootstrap modals:
$('#commentModal').on('show.bs.modal' , function (event) {
let button = $(event.relatedTarget);
let parentId = button.data('parent');
let modal = $(this);
modal.find("[name='parent_id']").val(parentId);
});
but i do not use bootstrap and following code not working for me!

How about something like this?
$(".btn").on("click", function(){
$(".modal-body").find("[name=parent_id]").val($(this).data("parent"));
// Code to show modal
});

Call show.bs.modal event before parent event

I have a bootstrap button (I used bootstrap 4) that open a modal and transfer the data that in the button to the form in the modal by the function:
$('#exampleModal').on('show.bs.modal', function (event).
the button is in a div (parent).
when I click on the button the parent event called before the child.
I don't want the parent event to be run.
I need only the popup modal to open.
when I try to open the button by onclick its call first but the data is not transfer.
this is my code example: codepen
this is the html
<div class="row">
<div class="col-12 parent">
I'm the parent!
<div class="child">
I'm the child
<button type="button" class="btn btn-primary" data-toggle="modal" data-target="#exampleModal" data-whatever="#mdo" data-message="#test message" >Open modal </button>
</div>
</div>
</div>
<!-- Bootstrap Modal -->
<div class="modal fade" id="exampleModal" tabindex="-1" role="dialog" aria-labelledby="exampleModalLabel" aria-hidden="true">
<div class="modal-dialog" role="document">
<div class="modal-content">
<div class="modal-header">
<h5 class="modal-title" id="exampleModalLabel">New message</h5>
<button type="button" class="close" data-dismiss="modal" aria-label="Close">
<span aria-hidden="true">×</span>
</button>
</div>
<div class="modal-body">
<form>
<div class="form-group">
<label for="recipient-name" class="form-control-label">Recipient:</label>
<input type="text" class="form-control" id="recipient-name">
</div>
<div class="form-group">
<label for="message-text" class="form-control-label">Message:</label>
<textarea class="form-control" id="message-text"></textarea>
</div>
</form>
</div>
<div class="modal-footer">
<button type="button" class="btn btn-secondary" data-dismiss="modal">Close</button>
<button type="button" class="btn btn-primary">Send message</button>
</div>
</div>
</div>
</div>
this is the script
<script>
$(".parent").click(function(event){
alert("Parent event");
})
/*
if I add this function I cant transfer the data that in the button
$(".child").click(function(event){
alert("Child event");
event.stopPropagation();
$('#exampleModal').modal('show');
})*/
$('#exampleModal').on('show.bs.modal', function (event) {
alert("btn event");
var button = $(event.relatedTarget) // Button triggered the modal
var recipient = button.data('whatever')
var message = button.data('message')
var modal = $(this)
modal.find('.modal-title').text('New message to ' + recipient)
modal.find('.modal-body input').val(recipient)
modal.find('.modal-body textarea').val(message)
})
</script>

Quite simple in the parent click , check if target is different to the button with data-target='#exampleModal' or not , all that using the .is() jquery function like below :
//get reference to the button
var $button = $("button[data-target='#exampleModal']");
$(".parent").click(function(event){
if (!$(event.target).is($button)) { // be sur button was'nt clicked
alert("Parent event");
}
})
Updated Pen
See below working snippet :
var $button = $("button[data-target='#exampleModal']");
$(".parent").click(function(event){
if (!$(event.target).is($button)) {
alert("Parent event");
}
})
$('#exampleModal').on('show.bs.modal', function (event) {
alert("btn event");
var button = $(event.relatedTarget) // Button triggered the modal
var recipient = button.data('whatever')
var message = button.data('message')
var modal = $(this)
modal.find('.modal-title').text('New message to ' + recipient)
modal.find('.modal-body input').val(recipient)
modal.find('.modal-body textarea').val(message)
})
body {
background-color: #a3d5d3;
}
.col-12{ background:red; height:100px;}
.child{background:white;}
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/twitter-bootstrap/4.0.0-alpha.6/js/bootstrap.min.js"></script>
<link href="https://cdnjs.cloudflare.com/ajax/libs/twitter-bootstrap/4.0.0-alpha.6/css/bootstrap.min.css" rel="stylesheet"/>
<div class="row">
<div class="col-12 parent">
I'm the parent!
<div class="child">
I'm the child
<button type="button" class="btn btn-primary" data-toggle="modal" data-target="#exampleModal" data-whatever="#mdo" data-message="#test message" >Open modal </button>
</div>
</div>
</div>
<!-- Bootstrap Modal -->
<div class="modal fade" id="exampleModal" tabindex="-1" role="dialog" aria-labelledby="exampleModalLabel" aria-hidden="true">
<div class="modal-dialog" role="document">
<div class="modal-content">
<div class="modal-header">
<h5 class="modal-title" id="exampleModalLabel">New message</h5>
<button type="button" class="close" data-dismiss="modal" aria-label="Close">
<span aria-hidden="true">×</span>
</button>
</div>
<div class="modal-body">
<form>
<div class="form-group">
<label for="recipient-name" class="form-control-label">Recipient:</label>
<input type="text" class="form-control" id="recipient-name">
</div>
<div class="form-group">
<label for="message-text" class="form-control-label">Message:</label>
<textarea class="form-control" id="message-text"></textarea>
</div>
</form>
</div>
<div class="modal-footer">
<button type="button" class="btn btn-secondary" data-dismiss="modal">Close</button>
<button type="button" class="btn btn-primary">Send message</button>
</div>
</div>
</div>
</div>

Bootstrap modals don't close

I need to close 2 modals in the same time. Why?
I have 2 modals, first shows the information and the second shows a exclude confirmation. When i close the second i want to close all modals.
This is in ASP.NET MVC and RAZOR.
This JS dont work, can you help me? Thanks!!
$(function () {
$(".close-modal-edit").click(function () {
$('.modal').modal('hide');
});
});
<!-- FIRST MODAL -->
<div class="portfolio-modal modal fade" id="dialog" tabindex="-1" role="dialog" aria-hidden="true">
<div class="modal-content">
<div class="close-modal" data-dismiss="modal">
</div>
<div class="container">
<div class="row">
<div class="col-lg-8 col-lg-offset-2">
<div class="modal-body text-left">
<a class="btn btn-success pull-right" data-dismiss="modal"> Close </a>
</div>
</div>
</div>
</div>
</div>
</div>
<!-- CONFIRMATION MODAL -->
<div class="portfolio-modal modal fade" id="dialog-exclude" tabindex="-1" role="dialog" aria-hidden="true">
<div class="modal-content modal-content-edit">
<div class="close-modal close-modal-edit" data-dismiss="modal">
</div>
<div class="container">
<div class="row">
<div class="col-lg-4 col-lg-offset-4">
<div class="modal-body text-left">
<a class="btn btn-success pull-right close-modal-edit" data-dismiss="modal"><i class="fa fa-times"></i> Cancel </a>
</div>
</div>
</div>
</div>
</div>
</div>

this seems to work for me. Looping through the modal objects and closing them individually.
$(".close-modal-edit").click(function () {
$.each($(".modal"), function (i, obj) {
$(obj).modal('hide');
});
});
Note: looks like your original $('.modal')modal('hide'); works for me as well here's a fiddle, use it this as a base, see if it works in your project, and if not we'll need more info about your project. http://jsfiddle.net/hxo5kccs/

Can you remove data-dismiss="modal" from both modal and try?

I can't clear form data from bootstrap modal

i have a little problem when im trying to clear bootstrap modal data..
there is my modal.
<div id="modal-creacion-alias" class="modal fade" tabindex="-1" data-backdrop="static" data-keyboard="false">
<div class="modal-dialog">
<form id="form-alias-dominio" method="POST" class="form">
<div class="modal-content">
<div class="form-body">
<div class="modal-header">
<button type="button" class="close" data-dismiss="modal" aria-hidden="true"></button>
<h2 class="modal-title">Alias de dominios</h2>
</div>
<div class="modal-body">
<div class="form-group">
<label class="col-md-4 control-label">Nombre del Alias<span class="required">*</span></label>
<div class="col-md-8">
<div class="input-icon right">
<i class="fa fa-info-circle tooltips" data-original-title="Contraseña" data-container="body"></i>
<input type="text" class="form-control" name="nombre-alias-dominio" id="nombre-alias-dominio">
<br>
</div>
</div>
</div>
<div class="clearfix"></div>
</div>
<div class="modal-footer ">
<button type="button" data-dismiss="modal" class="btn default">Cancelar <i class="fa fa-sign-out"></i></button>
<button type="submit" id="crear-alias-domino" class="btn gtd-blue-hard crear-alias-domino">Crear <i class="fa fa-plus"></i></button>
</div>
</div>
</div>
</form>
</div>
</div>
and this is the js function:
$('body').on('hide.bs.modal', '.modal', function () {
&(this).removeData('bs.modal');
});
but when i close and re open modal the data still there.
how can i solve it?
thanks.

You can reset all input data by using $(form).trigger('reset')
$('body').on('hide.bs.modal', '.modal', function () {
$('#form-alias-dominio').trigger("reset"); //here your form_id
});

I was able to clear data doing this
$('body').on('hide.bs.modal', '.modal', function (e) {
$(this).find('form').trigger("reset");
});
thanks #Sadikhasan