Why is my JavaScript code not workinig. alert box not showing - javascript

here is my html page :
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Hello</title>
<link rel="stylesheet" href="https://cdn.jsdelivr.net/npm/bootstrap#4.0.0/dist/css/bootstrap.min.css" integrity="sha384-Gn5384xqQ1aoWXA+058RXPxPg6fy4IWvTNh0E263XmFcJlSAwiGgFAW/dAiS6JXm" crossorigin="anonymous">
</head>
<body>
<!-- Button trigger modal -->
<button type="button" class="btn btn-primary" id="launchbtn" data-toggle="modal" data-target="#exampleModal">
Launch demo modal
</button>
<button type="button" class="btn btn-primary" id="btn1">Show Current Value</button>
<!-- 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">Modal title</h5>
<button type="button" class="close" data-dismiss="modal" aria-label="Close">
<span aria-hidden="true">×</span>
</button>
</div>
<div class="modal-body">
Name: <input type="text" id="id_name" value="jerry">
</div>
<div class="modal-footer">
<button type="button" class="btn btn-secondary" data-dismiss="modal">Close</button>
<button type="button" class="btn btn-primary">Save changes</button>
</div>
</div>
</div>
<script src="https://code.jquery.com/jquery-3.2.1.slim.min.js" integrity="sha384-KJ3o2DKtIkvYIK3UENzmM7KCkRr/rE9/Qpg6aAZGJwFDMVNA/GpGFF93hXpG5KkN" crossorigin="anonymous"></script>
<script src="https://cdn.jsdelivr.net/npm/popper.js#1.12.9/dist/umd/popper.min.js" integrity="sha384-ApNbgh9B+Y1QKtv3Rn7W3mgPxhU9K/ScQsAP7hUibX39j7fakFPskvXusvfa0b4Q" crossorigin="anonymous"></script>
<script src="https://cdn.jsdelivr.net/npm/bootstrap#4.0.0/dist/js/bootstrap.min.js" integrity="sha384-JZR6Spejh4U02d8jOt6vLEHfe/JQGiRRSQQxSfFWpi1MquVdAyjUar5+76PVCmYl" crossorigin="anonymous"></script>
<script src="main.js"></script>
<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.5.1/jquery.min.js"></script>
</body>
</html>
and my js page:
$(function(){
alert($("#id_name").val());
$("#launchbtn").click(function(){
$("#id_name").val('change');
});
$("#btn1").click(function(){
alert($("#id_name").val());
});
)};
I was testing stuff with javascript when all of a sudden all of my js code stopped working. My alert box is not showing. Nor is the value of my input changing. I tried solving it for 2 hours with no result. I'm very new to javascript any help would be appreciated.


If I test your code, all I see is a syntax error, change
)};
to
});
Is that all?

Related

Although scripts and css included, Bootstrap modal popup won't work

I'm trying to make a simple popup with Bootstrap modal but I can't make it work and have no clue why... I've added all the latest CSS and JS scripts and tried the example code from the Bootstrap modal documentation, but nothing gives.
What am I missing? Thanks for your help.
<!DOCTYPE html>
<html>
<head>
<link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/bootstrap/5.2.0/css/bootstrap.min.css" integrity="sha512-XWTTruHZEYJsxV3W/lSXG1n3Q39YIWOstqvmFsdNEEQfHoZ6vm6E9GK2OrF6DSJSpIbRbi+Nn0WDPID9O7xB2Q==" crossorigin="anonymous" referrerpolicy="no-referrer" />
</head>
<body>
<!-- Button trigger modal -->
<button type="button" class="btn btn-primary" data-toggle="modal" data-target="#exampleModalLong">
Launch demo modal
</button>
<!-- Modal -->
<div class="modal fade" id="exampleModalLong" tabindex="-1" role="dialog" aria-labelledby="exampleModalLongTitle" aria-hidden="true">
<div class="modal-dialog" role="document">
<div class="modal-content">
<div class="modal-header">
<h5 class="modal-title" id="exampleModalLongTitle">Modal title</h5>
<button type="button" class="close" data-dismiss="modal" aria-label="Close">
<span aria-hidden="true">×</span>
</button>
</div>
<div class="modal-body">
Test
</div>
<div class="modal-footer">
<button type="button" class="btn btn-secondary" data-dismiss="modal">Close</button>
<button type="button" class="btn btn-primary">Save changes</button>
</div>
</div>
</div>
</div>
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.6.1/jquery.min.js" integrity="sha512-aVKKRRi/Q/YV+4mjoKBsE4x3H+BkegoM/em46NNlCqNTmUYADjBbeNefNxYV7giUp0VxICtqdrbqU7iVaeZNXA==" crossorigin="anonymous" referrerpolicy="no-referrer"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/popper.js/2.11.6/umd/popper.min.js" integrity="sha512-6UofPqm0QupIL0kzS/UIzekR73/luZdC6i/kXDbWnLOJoqwklBK6519iUnShaYceJ0y4FaiPtX/hRnV/X/xlUQ==" crossorigin="anonymous" referrerpolicy="no-referrer"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/bootstrap/5.2.0/js/bootstrap.bundle.min.js" integrity="sha512-9GacT4119eY3AcosfWtHMsT5JyZudrexyEVzTBWV3viP/YfB9e2pEy3N7WXL3SV6ASXpTU0vzzSxsbfsuUH4sQ==" crossorigin="anonymous" referrerpolicy="no-referrer"></script>
</body>
</html>

You are using Bootstrap Version 5.2 .
Since Bootstrap 5 all data-Attributes got added an bs forming all data-Attributes to for example data-bs-target.
You were using an older Documentation with the newer Bundle js.
It can be a little confusing as if you are searching for something with Bootstrap mostly you will be directed to Bootstrap 4 instead of Bootstrap 5.
So be careful which version you include and which version of Documentation you are reading.
<!DOCTYPE html>
<html>
<head>
<link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/bootstrap/5.2.0/css/bootstrap.min.css" integrity="sha512-XWTTruHZEYJsxV3W/lSXG1n3Q39YIWOstqvmFsdNEEQfHoZ6vm6E9GK2OrF6DSJSpIbRbi+Nn0WDPID9O7xB2Q==" crossorigin="anonymous" referrerpolicy="no-referrer" />
</head>
<body>
<!-- Button trigger modal -->
<button type="button" class="btn btn-primary" data-bs-toggle="modal" data-bs-target="#exampleModalLong">
Launch demo modal
</button>
<!-- Modal -->
<div class="modal fade" id="exampleModalLong" tabindex="-1" role="dialog" aria-labelledby="exampleModalLongTitle" aria-hidden="true">
<div class="modal-dialog" role="document">
<div class="modal-content">
<div class="modal-header">
<h5 class="modal-title" id="exampleModalLongTitle">Modal title</h5>
<button type="button" class="close" data-bs-dismiss="modal" aria-label="Close">
<span aria-hidden="true">×</span>
</button>
</div>
<div class="modal-body">
Test
</div>
<div class="modal-footer">
<button type="button" class="btn btn-secondary" data-bs-dismiss="modal">Close</button>
<button type="button" class="btn btn-primary">Save changes</button>
</div>
</div>
</div>
</div>
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.6.1/jquery.min.js" integrity="sha512-aVKKRRi/Q/YV+4mjoKBsE4x3H+BkegoM/em46NNlCqNTmUYADjBbeNefNxYV7giUp0VxICtqdrbqU7iVaeZNXA==" crossorigin="anonymous" referrerpolicy="no-referrer"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/popper.js/2.11.6/umd/popper.min.js" integrity="sha512-6UofPqm0QupIL0kzS/UIzekR73/luZdC6i/kXDbWnLOJoqwklBK6519iUnShaYceJ0y4FaiPtX/hRnV/X/xlUQ==" crossorigin="anonymous" referrerpolicy="no-referrer"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/bootstrap/5.2.0/js/bootstrap.bundle.min.js" integrity="sha512-9GacT4119eY3AcosfWtHMsT5JyZudrexyEVzTBWV3viP/YfB9e2pEy3N7WXL3SV6ASXpTU0vzzSxsbfsuUH4sQ==" crossorigin="anonymous" referrerpolicy="no-referrer"></script>
</body>
</html>

use data-bs-target
Instead of using data-target you should use data-bs-target beacuse you are using
bootstrtap 5

How to get forward a child element from parent element in HTML?

I have an element in my HTML page to open a bootstrap modal. I also have a button inside the modal launch div to show an alert after clicked. The problem is after clicking on the button, alert is popped up and open the modal after closing it. I need to get out the modal launch functionality from the button while it is still inside the modal launch div so that I can click on the External lick button separately. I guess if I could get the button forward from the div like changing the z-index, it will be solved but I have no idea that how to do it.
<link rel="stylesheet" href="https://stackpath.bootstrapcdn.com/bootstrap/4.3.1/css/bootstrap.min.css" integrity="sha384-ggOyR0iXCbMQv3Xipma34MD+dH/1fQ784/j6cY/iJTQUOhcWr7x9JvoRxT2MZw1T" crossorigin="anonymous">
<script src="https://code.jquery.com/jquery-3.3.1.slim.min.js" integrity="sha384-q8i/X+965DzO0rT7abK41JStQIAqVgRVzpbzo5smXKp4YfRvH+8abtTE1Pi6jizo" crossorigin="anonymous"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/popper.js/1.14.7/umd/popper.min.js" integrity="sha384-UO2eT0CpHqdSJQ6hJty5KVphtPhzWj9WO1clHTMGa3JDZwrnQq4sF86dIHNDz0W1" crossorigin="anonymous"></script>
<script src="https://stackpath.bootstrapcdn.com/bootstrap/4.3.1/js/bootstrap.min.js" integrity="sha384-JjSmVgyd0p3pXB1rRibZUAYoIIy6OrQ6VrjIEaFf/nJGzIxFDsf4x0xIM+B07jRM" crossorigin="anonymous"></script>
<!-- Button trigger modal -->
<div type="button" class="btn btn-primary" data-toggle="modal" data-target="#exampleModalCenter">
Launch demo modal
<button onclick="alert('clicked!');">External click</button>
</div>
<!-- Modal -->
<div class="modal fade" id="exampleModalCenter" tabindex="-1" role="dialog" aria-labelledby="exampleModalCenterTitle" aria-hidden="true">
<div class="modal-dialog modal-dialog-centered" role="document">
<div class="modal-content">
<div class="modal-header">
<h5 class="modal-title" id="exampleModalLongTitle">Modal title</h5>
<button type="button" class="close" data-dismiss="modal" aria-label="Close">
<span aria-hidden="true">×</span>
</button>
</div>
<div class="modal-body">
...
</div>
<div class="modal-footer">
<button type="button" class="btn btn-secondary" data-dismiss="modal">Close</button>
<button type="button" class="btn btn-primary">Save changes</button>
</div>
</div>
</div>
</div>

Try this. Hope it helps
$('#btn').click(function(e) {
e.preventDefault();
alert('clicked!');
return false;
});
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/1.7/jquery.min.js"></script>
<link rel="stylesheet" href="https://stackpath.bootstrapcdn.com/bootstrap/4.3.1/css/bootstrap.min.css" integrity="sha384-ggOyR0iXCbMQv3Xipma34MD+dH/1fQ784/j6cY/iJTQUOhcWr7x9JvoRxT2MZw1T" crossorigin="anonymous">
<script src="https://code.jquery.com/jquery-3.3.1.slim.min.js" integrity="sha384-q8i/X+965DzO0rT7abK41JStQIAqVgRVzpbzo5smXKp4YfRvH+8abtTE1Pi6jizo" crossorigin="anonymous"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/popper.js/1.14.7/umd/popper.min.js" integrity="sha384-UO2eT0CpHqdSJQ6hJty5KVphtPhzWj9WO1clHTMGa3JDZwrnQq4sF86dIHNDz0W1" crossorigin="anonymous"></script>
<script src="https://stackpath.bootstrapcdn.com/bootstrap/4.3.1/js/bootstrap.min.js" integrity="sha384-JjSmVgyd0p3pXB1rRibZUAYoIIy6OrQ6VrjIEaFf/nJGzIxFDsf4x0xIM+B07jRM" crossorigin="anonymous"></script>
<!-- Button trigger modal -->
<div type="button" class="btn btn-primary" data-toggle="modal" data-target="#exampleModalCenter">
Launch demo modal
<button id="btn">External click</button>
</div>
<!-- Modal -->
<div class="modal fade" id="exampleModalCenter" tabindex="-1" role="dialog" aria-labelledby="exampleModalCenterTitle" aria-hidden="true">
<div class="modal-dialog modal-dialog-centered" role="document">
<div class="modal-content">
<div class="modal-header">
<h5 class="modal-title" id="exampleModalLongTitle">Modal title</h5>
<button type="button" class="close" data-dismiss="modal" aria-label="Close">
<span aria-hidden="true">×</span>
</button>
</div>
<div class="modal-body">
...
</div>
<div class="modal-footer">
<button type="button" class="btn btn-secondary" data-dismiss="modal">Close</button>
<button type="button" class="btn btn-primary">Save changes</button>
</div>
</div>
</div>
</div>

Why won't my bootstrap javascript run locally?

So I thought I'd give you my code to explain what my issue is..
<!DOCTYPE html>
<html>
<head>
<title>User Guide</title>
<link rel="stylesheet" href="style.css" type="text/css">
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.5/css/bootstrap.min.css" integrity="sha512-dTfge/zgoMYpP7QbHy4gWMEGsbsdZeCXz7irItjcC3sPUFtf0kuFbDz/ixG7ArTxmDjLXDmezHubeNikyKGVyQ==" crossorigin="anonymous">
</head>
<body>
<!-- Button trigger modal -->
<button type="button" class="btn btn-primary btn-lg" data-toggle="modal" data-target="#myModal">
Launch demo modal
</button>
<!-- Modal -->
<div class="modal fade" id="myModal" tabindex="-1" role="dialog" aria-labelledby="myModalLabel">
<div class="modal-dialog" role="document">
<div class="modal-content">
<div class="modal-header">
<button type="button" class="close" data-dismiss="modal" aria-label="Close"><span aria-hidden="true">×</span></button>
<h4 class="modal-title" id="myModalLabel">Modal title</h4>
</div>
<div class="modal-body">
...
</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>
<footer>
<script src="//code.jquery.com/jquery-1.11.3.min.js"></script>
<script src="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.5/js/bootstrap.min.js" integrity="sha512-K1qjQ+NcF2TYO/eI3M6v8EiNYZfA95pQumfvcVrTHtwQVDG+aHRqLi/ETn2uB+1JqwYqVG3LIvdm9lj6imS/pQ==" crossorigin="anonymous"></script>
<script src="modal.js"></script>
</footer>
</body>
</html>
There it is. but for some reason, the bootstrap js script isn't running so when I click the button nothing is happening...
anybody able to give me a hand?
Thanks,
Jonathan

It's because you're using a protocol-relative URL for jQuery. You should be seeing errors in the browser's console.
Try changing:
<script src="//code.jquery.com/jquery-1.11.3.min.js"></script>
to:
<script src="https://code.jquery.com/jquery-1.11.3.min.js"></script>
When you open a file locally in your browser (outside of a web server) most browser's will use the file:// protocol, so //code.jquery.com/jquery-1.11.3.min.js becomes file://code.jquery.com/jquery-1.11.3.min.js and odds are that you don't have jQuery that location.

How do I get bootstrap modal working?

Below is the html
<!DOCTYPE html>
<html>
<head>
<title>Title</title>
<meta http-equiv="Content-type" content="text/html; charset=utf-8" />
<link rel="stylesheet" type="text/css" href="styles/bootstrap.min.css" />
<link rel="stylesheet" type="text/css"
href="styles/bootstrap-theme.min.css" />
<script type="text/javascript" src="js/jquery-1.11.2.min.js"></script>
<script type="text/javascipt" src="js/bootstrap.min.js"></script>
</head>
<body>
<button type="button" class="btn btn-primary btn-lg"
data-toggle="modal" data-target="#myModal">Launch demo modal
</button>
<!-- Modal for file filter -->
<div class="modal fade" id="myModal" tabindex="-1" role="dialog"
aria-labelledby="myModalLabel" aria-hidden="true">
<div class="modal-dialog">
<div class="modal-content">
<div class="modal-header">
<button type="button" class="close" data-dismiss="modal"
aria-label="Close">
<span aria-hidden="true">×</span>
</button>
<h4 class="modal-title" id="myModalLabel">Modal title</h4>
</div>
<div class="modal-body">...</div>
<div class="modal-footer">
<button type="button" class="btn btn-primary">Apply</button>
</div>
</div>
</div>
</div>
</body>
</html>
I've already looked up answers for the same question. Solutions for the same recommend loading jquery.js before bootstrap.js. Mine doesn't work inspite of taking care of the same.
EDIT
Am now using bootstrap-3.3.4 and jquery-2.1.3

remove
type="text/javascipt"
from bootstrap.min.js script.

Bootstrap modal won't appear

I'm just trying to get the tutorial sample modal to show. I have the exact code from the tutorial and my file references are correct. Ive even tried adding the javascript modal.show thing.
<!doctype html>
<html lang="en">
<head>
<link rel="stylesheet" type="text/css" href="css/bootstrap.min.css">
<script type="text/javascript" src="js/bootstrap.min.js"></script>
<script src="//ajax.googleapis.com/ajax/libs/jquery/1.10.1/jquery.min.js"></script>
<script src="//ajax.googleapis.com/ajax/libs/jqueryui/1.10.3/jquery-ui.min.js"> </script>
</head>
<body>
<!-- Button trigger modal -->
<button class="btn btn-primary btn-lg" data-toggle="modal" data-target="#myModal">
Launch demo modal
</button>
<!-- Modal -->
<div class="modal fade" id="myModal" tabindex="-1" role="dialog" aria- labelledby="myModalLabel" aria-hidden="true">
<div class="modal-dialog">
<div class="modal-content">
<div class="modal-header">
<button type="button" class="close" data-dismiss="modal" aria-hidden="true">× </button>
<h4 class="modal-title" id="myModalLabel">Modal title</h4>
</div>
<div class="modal-body">
...
</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><!-- /.modal-content -->
</div><!-- /.modal-dialog -->
</div><!-- /.modal -->
</body>
</html>

Try loading the js/bootstrap.min.js file after the jquery files.
<script src="//ajax.googleapis.com/ajax/libs/jquery/1.10.1/jquery.min.js"></script>
<script src="//ajax.googleapis.com/ajax/libs/jqueryui/1.10.3/jquery-ui.min.js"> </script>
<script type="text/javascript" src="js/bootstrap.min.js"></script>

bootstrap.min.js requires jQuery to work properly.
Here, I tidied up your code and fixed the error (probably):
<!doctype html>
<html lang="en">
<head>
<link rel="stylesheet" type="text/css" href="css/bootstrap.min.css" />
<script src="//ajax.googleapis.com/ajax/libs/jquery/1.10.1/jquery.min.js"></script>
<script src="//ajax.googleapis.com/ajax/libs/jqueryui/1.10.3/jquery-ui.min.js"></script>
<script type="text/javascript" src="js/bootstrap.min.js"></script>
</head>
<body>
<!-- Button trigger modal -->
<button class="btn btn-primary btn-lg" data-toggle="modal" data-target="#myModal">Launch demo modal</button>
<!-- Modal -->
<div class="modal fade" id="myModal" tabindex="-1" role="dialog" aria- labelledby="myModalLabel" aria-hidden="true">
<div class="modal-dialog">
<div class="modal-content">
<div class="modal-header">
<button type="button" class="close" data-dismiss="modal" aria-hidden="true">×</button>
<h4 class="modal-title" id="myModalLabel">Modal title</h4>
</div>
<div class="modal-body">...</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>
<!-- /.modal-content -->
</div>
<!-- /.modal-dialog -->
</div>
<!-- /.modal -->
</body>
</html>

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