Why bootstrap-multiselect closes the dropdown-menu? - javascript

In a nav-bar I have a dropdown-menu, in which I occupy bootstrap-multiselect.
When I occupy a normal select it works fine, but I integrate the bootstrap-multiselect and closes the dropdown-menu
I work in codeigniter, I load the multiselect with a getJSON function from an api, which works well with a normal select
this is the html code
<nav class="navbar navbar-default navbar-expand-lg navbar-light navbar-fixed-top">
<ul class="nav navbar-nav navbar-right ml-auto">
<li class="nav-item">
<a id="btn_navbar" href="#" data-toggle="dropdown"
class="btn btn-primary dropdown-toggle get-started-btn mt-1 mb-1">Button</a>
<ul class="dropdown-menu form-wrapper">
<li>
<form>
<div class="form-group">
<label for="select_establecimiento">Colegio</label>
<select class="form-control" id="select_establecimiento">
</select>
</div>
<div class="form-group">
<label for="select_mes">Mes</label>
<select class="form-control" id="select_mes">
</select>
</div>
<div class="form-group">
<label for="select_periodo">Periodo</label>
<select class="form-control" id="select_periodo">
</select>
</div>
<button id="change" class="btn btn-primary btn-md btn-block">Cambiar</button>
<button id="logout" class="btn btn-info btn-md btn-block">Salir</button>
</form>
</li>
</ul>
</li>
</ul>
</div>
</nav>
this is the javascript code
function select_establecimiento() {
$.getJSON('get_establecimiento', function (result) {
var mySelect = $('#select_establecimiento').empty();
$.each(result.data, function (index, value) {
mySelect.append(new Option(value.name, value.id));
})
mySelect.multiselect({
buttonWidth: '100%',
refresh: true
});
})
}


Here is working snippet.
Bootstrap dropdown closes after every click, so it will close if you try to open another dropdown (multiselect).
Your problem mixed with this:
Avoid dropdown menu close on click inside
var result = {data: [
{name: "aaa",
id: 0}, {name: "bbb",
id: 1}, {name: "ccc",
id: 2},
]
}
var mySelect = $('#select_establecimiento').empty();
$.each(result.data, function (index, value) {
mySelect.append(new Option(value.name, value.id));
})
mySelect.multiselect({
buttonWidth: '100%',
refresh: true
});
$('#btn_navbar').on('click', function (event) {
$(this).parent().toggleClass('open');
});
$('body').on('click', function (e) {
if (!$('.dropdown.form-wrapper').is(e.target)
&& $('.dropdown.form-wrapper').has(e.target).length === 0
&& $('.open').has(e.target).length === 0
) {
$('.dropdown.form-wrapper').removeClass('open');
}
});
<script
src="https://code.jquery.com/jquery-3.4.1.min.js"
integrity="sha256-CSXorXvZcTkaix6Yvo6HppcZGetbYMGWSFlBw8HfCJo="
crossorigin="anonymous"></script>
<!-- Latest compiled and minified CSS -->
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/css/bootstrap.min.css" integrity="sha384-BVYiiSIFeK1dGmJRAkycuHAHRg32OmUcww7on3RYdg4Va+PmSTsz/K68vbdEjh4u" crossorigin="anonymous">
<!-- Latest compiled and minified JavaScript -->
<script src="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/js/bootstrap.min.js" integrity="sha384-Tc5IQib027qvyjSMfHjOMaLkfuWVxZxUPnCJA7l2mCWNIpG9mGCD8wGNIcPD7Txa" crossorigin="anonymous"></script>
<!-- Include the plugin's CSS and JS: -->
<script type="text/javascript" src="https://cdnjs.cloudflare.com/ajax/libs/bootstrap-multiselect/0.9.15/js/bootstrap-multiselect.min.js"></script>
<link rel="stylesheet" href="css/bootstrap-multiselect.css" type="text/css"/>
<nav class="navbar navbar-default navbar-expand-lg navbar-light navbar-fixed-top">
<ul class="nav navbar-nav navbar-right ml-auto">
<li class="nav-item">
<a id="btn_navbar" href="#"
class="btn btn-primary dropdown-toggle get-started-btn mt-1 mb-1">Button</a>
<ul class="dropdown-menu form-wrapper">
<li>
<form>
<div class="form-group">
<label for="select_establecimiento">Colegio</label>
<select class="form-control" id="select_establecimiento">
</select>
</div>
<div class="form-group">
<label for="select_mes">Mes</label>
<select class="form-control" id="select_mes">
</select>
</div>
<div class="form-group">
<label for="select_periodo">Periodo</label>
<select class="form-control" id="select_periodo">
</select>
</div>
<button id="change" class="btn btn-primary btn-md btn-block">Cambiar</button>
<button id="logout" class="btn btn-info btn-md btn-block">Salir</button>
</form>
</li>
</ul>
</li>
</ul>
</nav>

Related

Why does my delete button does not delete the card

I want to delete the card when we click on the delete button after adding a TODO note
I have created a website which uses localstorage to store notes and display when clicking the create TODO button and it all works but when I click the delete button after the note is created (You have to create a TODO first) it does not delete the div itself
I want to delete the card when we click on the delete button
CODE:
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>TODO List</title>
<link href="https://cdn.jsdelivr.net/npm/bootstrap#5.2.2/dist/css/bootstrap.min.css" rel="stylesheet"
integrity="sha384-Zenh87qX5JnK2Jl0vWa8Ck2rdkQ2Bzep5IDxbcnCeuOxjzrPF/et3URy9Bv1WTRi" crossorigin="anonymous">
<style>
.main-title {
text-align: center;
}
.input {
border: 2px solid grey;
}
.all-todo {
display: flex;
margin: 30px;
}
</style>
</head>
<body>
<nav class="navbar navbar-expand-lg bg-light">
<div class="container-fluid">
<a class="navbar-brand" href="#">TODO List</a>
<button class="navbar-toggler" type="button" data-bs-toggle="collapse"
data-bs-target="#navbarSupportedContent" aria-controls="navbarSupportedContent" aria-expanded="false"
aria-label="Toggle navigation">
<span class="navbar-toggler-icon"></span>
</button>
<div class="collapse navbar-collapse" id="navbarSupportedContent">
<ul class="navbar-nav me-auto mb-2 mb-lg-0">
<li class="nav-item">
<a class="nav-link active" aria-current="page" href="#">Home</a>
</li>
<li class="nav-item">
<a class="nav-link" href="#">Link</a>
</li>
</ul>
<form class="d-flex" role="search">
<input class="form-control me-2" type="search" placeholder="Search" aria-label="Search">
<button class="btn btn-outline-success" type="submit">Search</button>
</form>
</div>
</div>
</nav>
<h1 class="main-title">TODO List</h1>
<div class="container">
<div class="mb-3">
<label for="exampleFormControlInput1" class="form-label">Task Name</label>
<input type="text" class="form-control input" id="exampleFormControlInput1">
</div>
<div class="mb-3">
<label for="exampleFormControlTextarea1" class="form-label">Task Details</label>
<textarea class="form-control input" id="exampleFormControlTextarea1" rows="3"></textarea>
</div>
<button type="submit" class="btn btn-primary" id="main-btn">Create TODO</button>
<button type="button" class="btn btn-warning" id="clr">Clear LocalStorage</button>
</div>
<div class="all-todo"></div>
<script src="https://cdn.jsdelivr.net/npm/bootstrap#5.2.2/dist/js/bootstrap.bundle.min.js"
integrity="sha384-OERcA2EqjJCMA+/3y+gxIOqMEjwtxJY7qPCqsdltbNJuaOe923+mo//f6V8Qbsw3"
crossorigin="anonymous"></script>
</body>
<script>
let button = document.getElementById("main-btn")
button.onclick = () => {
let key = document.getElementById("exampleFormControlInput1").value
let value = document.getElementById("exampleFormControlTextarea1").value
if (key != "" && value != "") {
iHTML = ""
localStorage.setItem(key, value)
iHTML += `
<div class="card" style="width: 18rem;">
<div class="card-body">
<h5 class="card-title">${key}</h5>
<p class="card-text">${localStorage.getItem(key)}</p>
<button type="button" id="note" onclick='${key}.innerHTML=""' class="btn btn-danger '${key}'">Delete</button>
</div>
</div>
`
document.getElementsByClassName("all-todo")[0].innerHTML += iHTML
}
else {
alert("Task Name or Details cannot be empty!")
}
}
let clr_btn = document.getElementById("clr")
clr_btn.onclick = () => {
localStorage.clear()
}
</script>
</html>

The error is thrown on this line onclick='${key}.innerHTML=""'. You will want to first remove the item from local storage e.g: localStorage.removeItem('${key}') and then remove the html. Theres many way of achieveing this but this.parentElement.parentElement.remove() should be sufficient
The complete button should look something like <button type="button" id="note" onclick="localStorage.removeItem('${key}'); this.parentElement.parentElement.remove()" class="btn btn-danger '${key}'">Delete</button>
Heres a working example:
https://jsfiddle.net/qt83bshd/

Well, i post you a simple solution for your problem.
Instead of use innerhtml to introuce your todos, yo can create the elements.
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>TODO List</title>
<link href="https://cdn.jsdelivr.net/npm/bootstrap#5.2.2/dist/css/bootstrap.min.css" rel="stylesheet"
integrity="sha384-Zenh87qX5JnK2Jl0vWa8Ck2rdkQ2Bzep5IDxbcnCeuOxjzrPF/et3URy9Bv1WTRi" crossorigin="anonymous">
<style>
.main-title {
text-align: center;
}
.input {
border: 2px solid grey;
}
.all-todo {
display: flex;
margin: 30px;
}
/* add css in this poiint to optimize code*/
.card {
width: 18rem;
}
</style>
</head>
<body>
<nav class="navbar navbar-expand-lg bg-light">
<div class="container-fluid">
<a class="navbar-brand" href="#">TODO List</a>
<button class="navbar-toggler" type="button" data-bs-toggle="collapse"
data-bs-target="#navbarSupportedContent" aria-controls="navbarSupportedContent" aria-expanded="false"
aria-label="Toggle navigation">
<span class="navbar-toggler-icon"></span>
</button>
<div class="collapse navbar-collapse" id="navbarSupportedContent">
<ul class="navbar-nav me-auto mb-2 mb-lg-0">
<li class="nav-item">
<a class="nav-link active" aria-current="page" href="#">Home</a>
</li>
<li class="nav-item">
<a class="nav-link" href="#">Link</a>
</li>
</ul>
<form class="d-flex" role="search">
<input class="form-control me-2" type="search" placeholder="Search" aria-label="Search">
<button class="btn btn-outline-success" type="submit">Search</button>
</form>
</div>
</div>
</nav>
<h1 class="main-title">TODO List</h1>
<div class="container">
<div class="mb-3">
<label for="exampleFormControlInput1" class="form-label">Task Name</label>
<input type="text" class="form-control input" id="exampleFormControlInput1">
</div>
<div class="mb-3">
<label for="exampleFormControlTextarea1" class="form-label">Task Details</label>
<textarea class="form-control input" id="exampleFormControlTextarea1" rows="3"></textarea>
</div>
<button type="submit" class="btn btn-primary" id="main-btn">Create TODO</button>
<button type="button" class="btn btn-warning" id="clr">Clear LocalStorage</button>
</div>
<div class="all-todo"></div>
<script src="https://cdn.jsdelivr.net/npm/bootstrap#5.2.2/dist/js/bootstrap.bundle.min.js"
integrity="sha384-OERcA2EqjJCMA+/3y+gxIOqMEjwtxJY7qPCqsdltbNJuaOe923+mo//f6V8Qbsw3"
crossorigin="anonymous"></script>
</body>
<script>
let button = document.getElementById("main-btn")
button.onclick = () => {
// collect the div that contains all the todos
let alltodo = document.querySelector(".all-todo");
let key = document.getElementById("exampleFormControlInput1").value
let value = document.getElementById("exampleFormControlTextarea1").value
// and if it any todo create the card
if (key != "" && value != "") {
localStorage.setItem(key, value)
// with create element we can create the card more easy
var todo = document.createElement("div");
todo.setAttribute("class", "card");
var button = document.createElement("button");
button.textContent = "eliminar";
var titulo = document.createElement("h5");
titulo.textContent = key;
button.onclick = () => {
console.log(button.parentElement.remove())
// in this point we can also remove the todo from the local storage wih localstorage.removeItem()
}
// introduce all items in dom
todo.appendChild(titulo)
todo.appendChild(button);
alltodo.appendChild(todo);
// iHTML = ""
// localStorage.setItem(key, value)
// iHTML += `
// <div class="card" style="width: 18rem;">
// <div class="card-body">
// <h5 class="card-title">${key}</h5>
// <p class="card-text">${localStorage.getItem(key)}</p>
// <button type="button" id="note" onclick='${key}.innerHTML=""' class="btn btn-danger '${key}'">Delete</button>
// </div>
// </div>
// `
// document.getElementsByClassName("all-todo")[0].innerHTML += iHTML
}
else {
alert("Task Name or Details cannot be empty!")
}
}
let clr_btn = document.getElementById("clr")
clr_btn.onclick = () => {
localStorage.clear()
}
</script>
</html>

How make an dashed input mask in ASP.NET MVC core UI

I have an ASP.NET MVC Core project that I have a national code field that have input mask as below picture. How can I make this with jquery:
Any help will be appriciated

As #Mohammad mentiond, download the js library and include it in the lib folder then
your layout
<html lang="en">
<head>
<meta charset="utf-8" />
<meta name="viewport" content="width=device-width, initial-scale=1.0" />
<title>#ViewData["Title"] - InpustMaskField</title>
<link rel="stylesheet" href="~/lib/bootstrap/dist/css/bootstrap.min.css" />
<link rel="stylesheet" href="~/css/site.css" asp-append-version="true" />
<link rel="stylesheet" href="~/InpustMaskField.styles.css" asp-append-version="true" />
<script src="~/lib/jquery/dist/jquery.js"></script>
<script src="~/lib/jquery/dist/jquery.maskedinput.js"></script>
#await RenderSectionAsync("ScriptsHeader", required: false)
</head>
<body>
<header>
<nav class="navbar navbar-expand-sm navbar-toggleable-sm navbar-light bg-white border-bottom box-shadow mb-3">
<div class="container-fluid">
<a class="navbar-brand" asp-area="" asp-controller="Home" asp-action="Index">InpustMaskField</a>
<button class="navbar-toggler" type="button" data-bs-toggle="collapse" data-bs-target=".navbar-collapse" aria-controls="navbarSupportedContent"
aria-expanded="false" aria-label="Toggle navigation">
<span class="navbar-toggler-icon"></span>
</button>
<div class="navbar-collapse collapse d-sm-inline-flex justify-content-between">
<ul class="navbar-nav flex-grow-1">
<li class="nav-item">
<a class="nav-link text-dark" asp-area="" asp-controller="Home" asp-action="Index">Home</a>
</li>
<li class="nav-item">
<a class="nav-link text-dark" asp-area="" asp-controller="Home" asp-action="Privacy">Privacy</a>
</li>
</ul>
</div>
</div>
</nav>
</header>
<div class="container">
<main role="main" class="pb-3">
#RenderBody()
</main>
</div>
<footer class="border-top footer text-muted">
<div class="container">
© 2022 - InpustMaskField - <a asp-area="" asp-controller="Home" asp-action="Privacy">Privacy</a>
</div>
</footer>
<script src="~/lib/jquery/dist/jquery.min.js"></script>
<script src="~/lib/bootstrap/dist/js/bootstrap.bundle.min.js"></script>
<script src="~/js/site.js" asp-append-version="true"></script>
#await RenderSectionAsync("Scripts", required: false)
</body>
</html>
your index view
#{
ViewData["Title"] = "Home Page";
}
#section ScriptsHeader{
<script type="text/javascript">
$(document).ready(function ($) {
$.mask.definitions['~'] = "[+-]";
$("#date").mask("99/99/9999", { placeholder: "mm/dd/yyyy", completed: function () { alert("completed!"); } });
$(".phone").mask("(999) 999-9999");
$("#phoneExt").mask("(999) 999-9999? x99999");
$("#iphone").mask("+33 999 999 999");
$("#tin").mask("99-9999999");
$("#ssn").mask("999-99-9999");
$("#product").mask("a*-999-a999", { placeholder: " " });
$("#eyescript").mask("~9.99 ~9.99 999");
$("#po").mask("PO: aaa-999-***");
$("#pct").mask("99%");
$("#phoneAutoclearFalse").mask("(999) 999-9999", { autoclear: false, completed: function () { alert("completed autoclear!"); } });
$("#phoneExtAutoclearFalse").mask("(999) 999-9999? x99999", { autoclear: false });
$("input").blur(function () {
$("#info").html("Unmasked value: " + $(this).mask());
}).dblclick(function () {
$(this).unmask();
});
})
</script>
}
<div class="text-center">
<h1 class="display-4">Welcome</h1>
<p>Learn about building Web apps with ASP.NET Core.</p>
</div>
<table>
<tr><td>Date</td><td><input id="date" value="1231" type="text" tabindex="1" /></td><td>99/99/9999</td></tr>
<tr><td>Phone</td><td><input class="phone" type="text" tabindex="2" /></td><td>(999) 999-9999</td></tr>
<tr><td>Phone(Readonly)</td><td><input class="phone" type="text" tabindex="2" readonly /></td><td>(999) 999-9999</td></tr>
<tr><td>Phone + Ext</td><td><input id="phoneExt" type="text" tabindex="2" /></td><td>(999) 999-9999? x99999</td></tr>
<tr><td>Int'l Phone</td><td><input id="iphone" type="text" tabindex="2" /></td><td>+33 999 999 999</td></tr>
<tr><td>Tax ID</td><td><input id="tin" type="text" tabindex="3" /></td><td>99-9999999</td></tr>
<tr><td>SSN</td><td><input id="ssn" type="text" tabindex="4" /></td><td>999-99-9999</td></tr>
<tr><td>Product Key</td><td><input id="product" type="text" tabindex="5" /></td><td>a*-999-a999</td></tr>
<tr><td>Eye Script</td><td><input id="eyescript" type="text" tabindex="6" /></td><td>~9.99 ~9.99 999</td></tr>
<tr><td>Purchase Order</td><td><input id="po" type="text" tabindex="6" /></td><td>aaa-999-***</td></tr>
<tr><td>Percent</td><td><input id="pct" type="text" tabindex="6" /></td><td>99%</td></tr>
<tr><td>Phone (autoclear=false)</td><td><input id="phoneAutoclearFalse" type="text" tabindex="6" /></td><td>(999) 999-9999</td></tr>
<tr><td>Phone + Ext (autoclear=false)</td><td><input id="phoneExtAutoclearFalse" type="text" tabindex="6" /></td><td>(999) 999-9999? x99999</td></tr>
</table>
<div id="info"></div>

How to prevent jquery submit button from refreshing the HTML page?

I have a login page where the user enters his username and password, when he submits this form the data is sent to php file for verifying the password.
For the first time when the user enters data (I entered wrong details) the page shows "Invalid password...please try again".
The second time when the user enters data (again I enter wrong details) the page just reloads. I am not able to understand why this is happening.
For more better understanding I have added a google drive link to a video showing the issue.
Link:Link to the video
The html code:
<!DOCTYPE html>
<html lang="en" xmlns:justify-content="http://www.w3.org/1999/xhtml">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1 ">
<title>RVPS Elections</title>
<!-- Bootstrap CSS -->
<link rel="stylesheet" href="css/style.css">
<link rel="stylesheet" href="https://stackpath.bootstrapcdn.com/bootstrap/4.1.2/css/bootstrap.min.css" integrity="sha384-Smlep5jCw/wG7hdkwQ/Z5nLIefveQRIY9nfy6xoR1uRYBtpZgI6339F5dgvm/e9B" crossorigin="anonymous">
</head>
<body>
<nav class="navbar navbar-expand-sm bg-dark navbar-dark padding ">
<div class="container-fluid">
<a class="navbar-brand" href="index.html">
<img src="assets/rv.png">
RV PUBLIC SCHOOL
</a>
<ul class="navbar-nav ml-auto">
<li class="nav-item">
<a class="nav-link" href="index.html">Home</a>
</li>
<li class="nav-item">
<a class="nav-link" href="admin.html">Admin Login</a>
</li>
<li class="nav-item">
<a class="nav-link" href="">About</a>
</li>
<li class="nav-item">
<a class="nav-link" href="">Contact Us</a>
</li>
</ul>
</div>
</nav>
<div class="container">
<p align="center" class="lead">Get administrator access by entering correct details</p>
</div>
<div class="container-fluid padding mt-1 " style="align-items: center; justify-content:center; display:flex ;" >
<div class="row padding">
<div class="card border-dark" >
<div class="card-header" align="center">
<img src="assets/rv.png">
<h5>Admin Sign In</h5>
</div>
<div class="card-body" id="admin-signin-card">
<form id="admin-signin">
<div class="form-group">
<label>Username</label>
<input id="admin_username" type="text" class="form-control input-lg" placeholder="Enter your username" required>
</div>
<div class="form-group">
<label>Password</label>
<input id="admin_password" type="password" class="form-control input-lg" placeholder="Enter your Password" required>
</div>
<div class="form-group">
Forgot Password?
</div>
<div class="form-group" >
<input id="submit_button" type="submit" name="Sign In" value="Sign In" class="btn btn-success input-lg">
</div>
</form>
</div>
</div>
</div>
</div>
<footer>
<div class="container-fluid padding">
<h1 align="center">About Us</h1>
<p align="center">I am Goutam B Seervi. A student of RVPS for the year 2015-18</p>
<h2 align="center">Contact me</h2>
<p align="center">Phone nnumber : 7019271367</p>
<p align="center">Email id : goutambseervi#gmail.com</p>
</div>
</footer>
</body>
<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<script src="https://maxcdn.bootstrapcdn.com/bootstrap/4.1.0/js/bootstrap.min.js"> </script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/popper.js/1.14.0/umd/popper.min.js"></script>
<script src="js/admin_login_script.js"></script>
</html>
The javascript part:
$(document).ready(function () {
$("#admin-signin").submit(function (e) {
e.preventDefault();
let admin_username = $("#admin_username").val();
let admin_password = $("#admin_password").val();
$.ajax({
url: 'php_admin_login.php',
data: {
admin_username: admin_username,
admin_password: admin_password
},
type: "POST",
dataType: "json",
success: function (response) {
if (response === "OK") {
window.open("admin.html", "_self");
}
else {
document.getElementById('admin-signin-card').innerHTML += '<div class="alert alert-danger"><h5>Error occured...Please try again</h5></div>';
console.log("error shown");
}
}
});
});
});
I'm sure there is no problem with the php code so I'm not pasting here just to make the question more clearer.
If you need the whole code of the project you can get it here:Github link to the project

else {
document.getElementById('admin-signin-card').innerHTML += '<div class="alert …>';
Adding to an element’s .innerHTML replaces the whole content of the element; even the stuff that was already there will first be removed, and then re-created.
So your form itself is replaced with a new form, and therefor you completely lose your submit event handler you had attached to it as well.
Your attempts at preventing the default event action fail, because you handler function simply doesn’t get called any more at all, and just a normal form submit is performed now, which of course reloads the page.
You need to either add your event handler again after you replaced the parent container’s innerHTML - or use event delegation to begin with.

Try to use this. Hope it will help
$("form").submit(function(e){
e.preventDefault();
});
Kindly let me know if it does not work.

Try return false at the end of your $("#admin-signin").submit function instead of the preventDefault()

This is happening due to how you handle errors. By using document.getElementById('admin-signin-card').innerHTML += ... you are effectively reloading your form meaning that you lose the event listener. You can either adjust how you display the error or adjust the event listener.
I would recommend changing how you display the error.
I have removed the request in the example below but it's the same idea:
$(document).ready(function () {
$("#admin-signin").submit(function (e) {
e.preventDefault();
let admin_username = $("#admin_username").val();
let admin_password = $("#admin_password").val();
let response = "no";
if (response === "OK") {
window.open("admin.html", "_self");
} else {
document.getElementById('admin-signin-card-error').innerHTML ='<div class="alert alert-danger"><h5>Error occured...Please try again</h5></div>';
console.log("error shown");
}
});
});
<!DOCTYPE html>
<html lang="en" xmlns:justify-content="http://www.w3.org/1999/xhtml">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1 ">
<title>RVPS Elections</title>
<link rel="stylesheet" href="https://stackpath.bootstrapcdn.com/bootstrap/4.1.2/css/bootstrap.min.css" integrity="sha384-Smlep5jCw/wG7hdkwQ/Z5nLIefveQRIY9nfy6xoR1uRYBtpZgI6339F5dgvm/e9B" crossorigin="anonymous">
</head>
<body>
<nav class="navbar navbar-expand-sm bg-dark navbar-dark padding ">
<div class="container-fluid">
<a class="navbar-brand" href="index.html">
<img src="assets/rv.png"> RV PUBLIC SCHOOL
</a>
<ul class="navbar-nav ml-auto">
<li class="nav-item">
<a class="nav-link" href="index.html">Home</a>
</li>
<li class="nav-item">
<a class="nav-link" href="admin.html">Admin Login</a>
</li>
<li class="nav-item">
<a class="nav-link" href="">About</a>
</li>
<li class="nav-item">
<a class="nav-link" href="">Contact Us</a>
</li>
</ul>
</div>
</nav>
<div class="container">
<p align="center" class="lead">Get administrator access by entering correct details</p>
</div>
<div class="container-fluid padding mt-1 " style="align-items: center; justify-content:center; display:flex ;">
<div class="row padding">
<div class="card border-dark">
<div class="card-header" align="center">
<img src="assets/rv.png">
<h5>Admin Sign In</h5>
</div>
<div class="card-body" id="admin-signin-card">
<form id="admin-signin">
<div class="form-group">
<label>Username</label>
<input id="admin_username" type="text" class="form-control input-lg" placeholder="Enter your username" required>
</div>
<div class="form-group">
<label>Password</label>
<input id="admin_password" type="password" class="form-control input-lg" placeholder="Enter your Password" required>
</div>
<div class="form-group">
Forgot Password?
</div>
<div class="form-group">
<input id="submit_button" type="submit" name="Sign In" value="Sign In" class="btn btn-success input-lg">
</div>
</form>
<div id="admin-signin-card-error"></div>
</div>
</div>
</div>
</div>
<footer>
<div class="container-fluid padding">
<h1 align="center">About Us</h1>
<p align="center">I am Goutam B Seervi. A student of RVPS for the year 2015-18</p>
<h2 align="center">Contact me</h2>
<p align="center">Phone nnumber : 7019271367</p>
<p align="center">Email id : goutambseervi#gmail.com</p>
</div>
</footer>
</body>
<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<script src="https://maxcdn.bootstrapcdn.com/bootstrap/4.1.0/js/bootstrap.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/popper.js/1.14.0/umd/popper.min.js"></script>
</html>

like #CBroe mentioned, the problem is caused by innerHTML.
i moved the content of innerHTML to the form, and give it display none, when there an error i show the error with .show()
i changed the ajax url and data Type for testing purpose.
$(document).ready(function () {
$("#admin-signin").on('submit', function (event) {
event.preventDefault();
let admin_username = $("#admin_username").val();
let admin_password = $("#admin_password").val();
$.ajax({
url: 'https://jsonp.afeld.me/?url=https://jsonview.com/example.json',
type: "POST",
dataType: "jsonp",
data: {
admin_username: admin_username,
admin_password: admin_password
},
success: function (response) {
if (response === "OK") {
window.open("admin.html", "_self");
} else {
$('.alert.alert-danger').show();
console.log("error shown");
}
}
});
});
});
<!DOCTYPE html>
<html lang="en" xmlns:justify-content="http://www.w3.org/1999/xhtml">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1 ">
<title>RVPS Elections</title>
<!-- Bootstrap CSS -->
<link rel="stylesheet" href="https://stackpath.bootstrapcdn.com/bootstrap/4.1.2/css/bootstrap.min.css" integrity="sha384-Smlep5jCw/wG7hdkwQ/Z5nLIefveQRIY9nfy6xoR1uRYBtpZgI6339F5dgvm/e9B" crossorigin="anonymous">
</head>
<body>
<div class="container-fluid padding mt-1 " style="align-items: center; justify-content:center; display:flex ;" >
<div class="row padding">
<div class="card border-dark" >
<div class="card-header" align="center">
<h5>Admin Sign In</h5>
</div>
<div class="card-body" id="admin-signin-card">
<form id="admin-signin">
<div class="form-group">
<label>Username</label>
<input id="admin_username" type="text" class="form-control input-lg" placeholder="Enter your username" required>
</div>
<div class="form-group">
<label>Password</label>
<input id="admin_password" type="password" class="form-control input-lg" placeholder="Enter your Password" required>
</div>
<div class="form-group">
Forgot Password?
</div>
<div class="form-group" >
<input id="submit_button" type="submit" name="Sign In" value="Sign In" class="btn btn-success input-lg">
</div>
<div class="alert alert-danger" style="display: none;"><h5>Error occured...Please try again</h5></div>
</form>
</div>
</div>
</div>
</div>
<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<script src="https://maxcdn.bootstrapcdn.com/bootstrap/4.1.0/js/bootstrap.min.js"> </script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/popper.js/1.14.0/umd/popper.min.js"></script>
</body>
</html>

TypeError: Cannot read property '0' of null

I'm working on a NodeJS Project that uses Sails.js as a framework.
What I'm trying to accomplish is a permissions system where the permissions per group are set by Check Boxes, I'm using a typical form with AngularJS.
When I click my "Sumbit" button it throws this error at my Browser's console:
angular.1.3.js:11594 TypeError: Cannot read property '0' of null
at $parseFunctionCall (angular.1.3.js:12333)
at callback (angular.1.3.js:22949)
at Scope.$eval (angular.1.3.js:14383)
at Scope.$apply (angular.1.3.js:14482)
at HTMLFormElement.<anonymous> (angular.1.3.js:22954)
at HTMLFormElement.eventHandler (angular.1.3.js:3011)(anonymous function) # angular.1.3.js:11594
Any help with this would be greatly appreciated.
EDIT Forgot the Code:
Here is the code that receives the information POSTed from the form
createGroup: function(req, res) {
Groups.create({
groupName: req.param('groupName'),
canViewUsers: req.param('canViewUsers'),
canEditUsers: req.param('canEditUsers'),
canPromoteToStaff: req.param('canPromoteToStaff'),
canViewNotes: req.param('canViewNotes'),
canEditPermissions: req.param('canEditPermissions')
});
Here is the code for that catches the information and POSTs it to the create function
angular.module('GroupsModule').controller('GroupsController', ['$scope', '$http', 'toastr', function($scope, $http, toastr) {
$scope.createGroup = {
loading: false
};
$scope.createGroupForm = function(){
// Set the loading state (i.e. show loading spinner)
$scope.createGroup.loading = true;
// Submit request to Sails.
$http.post('/createGroup', {
groupName: $scope.createGroupForm.groupName,
canViewUsers: $scope.createGroupForm.canViewUsers,
canEditUsers: $scope.createGroupForm.canEditUsers,
canPromoteToStaff: $scope.createGroupForm.canPromoteToStaff,
canViewNotes: $scope.createGroupForm.canViewNotes,
canEditPermissions: $scope.createGroupForm.canEditPermissions
})
.then(function onSuccess(sailsResponse){
window.location = '/groups';
})
.catch(function onError(sailsResponse){
// Handle known error type(s).
// If using sails-disk adpater -- Handle Duplicate Key
var groupAlreadyExists = sailsResponse.status == 409;
if (groupAlreadyExists) {
toastr.error('That group already exists', 'Error');
}
})
.finally(function eitherWay(){
$scope.createGroup.loading = false;
})
There are closing brackets but they aren't getting formatted correctly in the post.
And finally here is the code for the Form itself:
<!--STYLES-->
<link rel="stylesheet" href="/styles/angular-toastr.css">
<link rel="stylesheet" href="/styles/bootstrap.3.1.1.css">
<link rel="stylesheet" href="/styles/importer.css">
<link rel="stylesheet" href="/styles/style.css">
<link rel="stylesheet" href="/styles/theme.css">
<link rel="stylesheet" href="/styles/theme.min.css">
<!--STYLES END-->
<body ng-app="DashboardModule" ng-controller="DashboardController" ng-cloak>
<div class="bs-docs-section clearfix">
<div class="row">
<div class="bs-component">
<nav class="navbar navbar-default">
<div class="container-fluid">
<div class="navbar-header">
<button type="button" class="navbar-toggle collapsed" data-toggle="collapse" data-target="#bs-example-navbar-collapse-1">
<span class="sr-only">Toggle navigation</span>
<span class="icon-bar"></span>
<span class="icon-bar"></span>
<span class="icon-bar"></span>
</button>
<a class="navbar-brand" href="/">Insomnia eSports</a>
</div>
<div class="collapse navbar-collapse" id="bs-example-navbar-collapse-1">
<ul class="nav navbar-nav">
<li><i class="fa fa-users" aria-hidden="true"></i> Group Management </li>
</ul>
<!--
<form class="navbar-form navbar-left" role="search">
<div class="form-group">
<input type="text" class="form-control" placeholder="Search">
</div>
<button type="submit" class="btn btn-default">Submit</button>
</form>
-->
<ul class="nav navbar-nav navbar-right">
<li>Sign Out</li>
</ul>
</div>
</div>
</nav>
</div>
</div>
</div>
<form ng-submit="createGroupForm()" id="create-group-form" class="form-signin" name="createGroupForm">
<h2 class="form-signin-heading">Create an account</h2>
<div class="row">
<!-- Group Name -->
<label>Group Name</label>
<input type="text" class="form-control" placeholder="Group Name" name="groupName" ng-model="createGroupForm.name" ng-maxlength="25" required>
</div>
<!-- Can View Users -->
<label>View Users?</label>
<input type="checkbox" name="canViewUsers" ng-model="canViewUsers.value">
<!-- Can View Users -->
<label>Edit Users?</label>
<input type="checkbox" name="canEditUsers" ng-model="canEditUsers.value">
<!-- Can Promote To Staff -->
<label>Promote to Staff?</label>
<input type="checkbox" name="canPromoteToStaff" ng-model="canPromoteToStaff.value">
<!-- Can Promote To Staff -->
<label>Can view notes?</label>
<input type="checkbox" name="canViewNotes" ng-model="canViewNotes.value">
<!-- Can Promote To Staff -->
<label>Can edit permissions?</label>
<input type="checkbox" name="canEditPermissions" ng-model="canEditPermissions.value">
<br/>
<!-- Disable signup button until the form has no errors -->
<button class="btn btn-success btn-lg btn-block" type="submit" ng-disabled="createGroupForm.$invalid">
<span ng-show="!createGroupForm.loading">Create Group</span>
<span class="overlord-loading-spinner fa fa-spinner" ng-show="createGroupForm.loading" ></span>
<span ng-show="createGroupForm.loading">Preparing your new group...</span>
</button>
<input type="hidden" name="_csrf" value="<%= _csrf %>" />
</form>
<!--SCRIPTS-->
<script src="/js/dependencies/sails.io.js"></script>
<script src="/js/dependencies/angular.1.3.js"></script>
<script src="/js/dependencies/Base64.js"></script>
<script src="/js/dependencies/angular-toastr.js"></script>
<script src="/js/dependencies/compareTo.module.js"></script>
<script src="/js/public/signup/SignupModule.js"></script>
<script src="/js/public/groups/GroupsModule.js"></script>
<script src="/js/private/dashboard/DashboardModule.js"></script>
<script src="/js/public/homepage/HomepageModule.js"></script>
<script src="/js/private/dashboard/DashboardController.js"></script>
<script src="/js/public/groups/GroupsController.js"></script>
<script src="/js/public/homepage/HomepageController.js"></script>
<script src="/js/public/signup/SignupController.js"></script>
<!--SCRIPTS END-->
</body>

This was solved by me incorrectly using $scope on createGroupForm instead of just createGroup. The corrected code bit is below:
Instead of:
$scope.createGroupForm.canViewUsers
Use:
$scope.createGroup.canViewUsers

Change Button/Dropdown Text to Selected Dropdown Item

I know variations of this questions have been asked multiple times on this site, but I'm going to give it another try. I feel like I have tried every combination of code possible trying to get this to work, but have had no luck. All I want to do is to get the 'Advanced:' text on the button/dropdown toggle to change to one of the selected dropdown item options when clicked (Item1, Item2, etc).
All functions are obviously not going to end up in my code, but I just wanted to give examples of what I have already tried.
$(function () {
$("#dropdown").click(function () {
$("#AdvancedSearch").text($(this).find(":selected").text());
$("#dropdown option:selected").text();
var text = $("#AdvancedSearch").text($(this).text());
alert(text);
});
});
$(".dropdown-menu li a").click(function () {
var selText = $(this).text();
$(this).parents('.input-group-btn').find('.dropdown-toggle').html(selText);
});
$(function () {
$("#dropdown").on('click', 'li a', function () {
$("#AdvancedSubmit").text($(this).text());
$("#AdvancedSubmit").val($(this).text());
});
});
$(function () {
$("#dropdown").click(function () {
$("#AdvancedSubmit").text($(this).text());
$("#AdvancedSubmit").val($(this).text());
});
});
<div class="container">
<div class="row buffer">
<div class="col-xs-1 col-sm-1 col-md-1 col-lg-1 ">
<div class="input-group" role="group" >
<div class="input-group-btn" role="group">
<button type="button" class="btn btn-secondary dropdown-toggle" id="AdvancedSearch" data-toggle="dropdown" OnClick="AdvancedSubmit();" style="background-color:#718CA1;color:#FFF;" > <span class="selection">Advanced:</span></button>
<div class="dropdown-menu" id="dropdown" style="background-color:#718CA1;color:#FFF;">
<li><a class="dropdown-item" href="#" data-value="item1">ITEM1</a></li>
<li><a class="dropdown-item" href="#" data-value="item2">ITEM2</a></li>
<li><a class="dropdown-item" href="#" data-value="item3">ITEM3</a></li>
</div>
</div>
</div>
</div>
<div class="col-xs-6 col-sm-6 col-md-6 col-lg-6 text-center">
<div class="input-group" role="group">
<input type="text" id="InquiryInput2" onblur="javascript:removeSpaces()" style="display:none" runat="server" class="form-control" Width="280px" placeholder="Asset Dept, Building, Asset MGR BEMSID #" />
</div>
</div>
</div>
</div>

Try this :
$(function () {
$("#dropdown a").click(function () {
$("#AdvancedSearch .selection").text('Advanced:'+$(this).text());
});
});
<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.9.1/jquery.min.js"></script>
<!-- Latest compiled and minified CSS -->
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/css/bootstrap.min.css" integrity="sha384-BVYiiSIFeK1dGmJRAkycuHAHRg32OmUcww7on3RYdg4Va+PmSTsz/K68vbdEjh4u" crossorigin="anonymous">
<!-- Optional theme -->
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/css/bootstrap-theme.min.css" integrity="sha384-rHyoN1iRsVXV4nD0JutlnGaslCJuC7uwjduW9SVrLvRYooPp2bWYgmgJQIXwl/Sp" crossorigin="anonymous">
<!-- Latest compiled and minified JavaScript -->
<script src="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/js/bootstrap.min.js" integrity="sha384-Tc5IQib027qvyjSMfHjOMaLkfuWVxZxUPnCJA7l2mCWNIpG9mGCD8wGNIcPD7Txa" crossorigin="anonymous"></script>
<div class="container">
<div class="row buffer">
<div class="col-xs-1 col-sm-1 col-md-1 col-lg-1 ">
<div class="input-group" role="group" >
<div class="input-group-btn" role="group">
<button type="button" class="btn btn-secondary dropdown-toggle" id="AdvancedSearch" data-toggle="dropdown" style="background-color:#718CA1;color:#FFF;" > <span class="selection">Advanced:</span></button>
<div class="dropdown-menu" id="dropdown" style="background-color:#718CA1;color:#FFF;">
<li><a class="dropdown-item" href="#" data-value="item1">ITEM1</a></li>
<li><a class="dropdown-item" href="#" data-value="item2">ITEM2</a></li>
<li><a class="dropdown-item" href="#" data-value="item3">ITEM3</a></li>
</div>
</div>
</div>
</div>
<div class="col-xs-6 col-sm-6 col-md-6 col-lg-6 text-center">
<div class="input-group" role="group">
<input type="text" id="InquiryInput2" onblur="javascript:removeSpaces()" style="display:none" runat="server" class="form-control" Width="280px" placeholder="Asset Dept, Building, Asset MGR BEMSID #" />
</div>
</div>
</div>
</div>

What you want is to execute a function when user click the list link.
This function must take the text inside it's own tag, and we must put that text inside every element having "selection" class.
$(function () {
$(".dropdown-menu li a").click(function () {
var selText = $(this).text();
$(".selection").html(selText);
});
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<div class="container">
<div class="row buffer">
<div class="col-xs-1 col-sm-1 col-md-1 col-lg-1 ">
<div class="input-group" role="group" >
<div class="input-group-btn" role="group">
<button type="button" class="btn btn-secondary dropdown-toggle" id="AdvancedSearch" data-toggle="dropdown" OnClick="AdvancedSubmit();" style="background-color:#718CA1;color:#FFF;" > <span class="selection">Advanced:</span></button>
<div class="dropdown-menu" id="dropdown" style="background-color:#718CA1;color:#FFF;">
<li><a class="dropdown-item" href="#" data-value="item1">ITEM1</a></li>
<li><a class="dropdown-item" href="#" data-value="item2">ITEM2</a></li>
<li><a class="dropdown-item" href="#" data-value="item3">ITEM3</a></li>
</div>
</div>
</div>
</div>
<div class="col-xs-6 col-sm-6 col-md-6 col-lg-6 text-center">
<div class="input-group" role="group">
<input type="text" id="InquiryInput2" onblur="javascript:removeSpaces()" style="display:none" runat="server" class="form-control" Width="280px" placeholder="Asset Dept, Building, Asset MGR BEMSID #" />
</div>
</div>
</div>
</div>
Good perseverance on your attempts !

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