find count of childrens of last div with specific class - javascript

My Html Code
<div class="col-md-6" id="buyerblock">
<div class="form-inline buyerdiv">
<div class="form-group">
<input class="form-control" name="buyername1" id="buyername1" style="margin-bottom: 3px;margin-right : 5px" value="" placeholder="Enter Buyer Name" type="text">
<input class="form-control" name="buyeremail1" id="buyeremail1" style="margin-bottom: 3px" value="" placeholder="Enter Buyer Email" type="email">
<button type="button" id="removebuyerbtn" class="btn btn-danger removebutton" style="margin-left: 19px;">-</button>
</div>
</div>
<div class="form-inline buyerdiv">
<div class="form-group">
<input class="form-control" name="buyername2" id="buyername2" style="margin-bottom: 3px;margin-right : 9px" value="" placeholder="Enter Buyer Name" type="text"><input class="form-control" name="buyeremail2" id="buyeremail2" style="margin-bottom: 3px" value="" placeholder="Enter Buyer Email" type="email">
<button type="button" id="removebuyerbtn" class="btn btn-danger removebutton" style="margin-left: 19px;">-</button></div></div>
<div class="form-inline buyerdiv">
<div class="form-group">
<input class="form-control" name="buyername3" id="buyername3" style="margin-bottom: 3px;margin-right : 9px" value="" placeholder="Enter Buyer Name" type="text">
<input class="form-control" name="buyeremail3" id="buyeremail3" style="margin-bottom: 3px" value="" placeholder="Enter Buyer Email" type="email">
<button type="button" id="addbuyerbtn" class="btn btn-primary addbutton" style="margin-left: 19px;">+</button>
<button type="button" id="removebuyerbtn" class="btn btn-danger removebutton" style="margin-left: 19px;">-</button>
</div>
</div>
</div>
My JS code
var check = $("div.buyerdiv").last().$(".form-group").children().length;
alert(check);
I want to get the count of child elements of form-group class under last buyerdiv class. How can i achieve it ?
Any help is much appreciated...

Use find()
var check = $("div.buyerdiv").last().find(".form-group").children().length;
alert(check);

Instead of $ use find()
var check = $("div.buyerdiv").last().find(".form-group").children().length;
console.log(check);
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.0/jquery.min.js"></script>
<div class="col-md-6" id="buyerblock">
<div class="form-inline buyerdiv">
<div class="form-group">
<input class="form-control" name="buyername1" id="buyername1" style="margin-bottom: 3px;margin-right : 5px" value="" placeholder="Enter Buyer Name" type="text">
<input class="form-control" name="buyeremail1" id="buyeremail1" style="margin-bottom: 3px" value="" placeholder="Enter Buyer Email" type="email">
<button type="button" id="removebuyerbtn" class="btn btn-danger removebutton" style="margin-left: 19px;">-</button>
</div>
</div>
<div class="form-inline buyerdiv">
<div class="form-group">
<input class="form-control" name="buyername2" id="buyername2" style="margin-bottom: 3px;margin-right : 9px" value="" placeholder="Enter Buyer Name" type="text"><input class="form-control" name="buyeremail2" id="buyeremail2" style="margin-bottom: 3px" value="" placeholder="Enter Buyer Email" type="email">
<button type="button" id="removebuyerbtn" class="btn btn-danger removebutton" style="margin-left: 19px;">-</button></div></div>
<div class="form-inline buyerdiv">
<div class="form-group">
<input class="form-control" name="buyername3" id="buyername3" style="margin-bottom: 3px;margin-right : 9px" value="" placeholder="Enter Buyer Name" type="text">
<input class="form-control" name="buyeremail3" id="buyeremail3" style="margin-bottom: 3px" value="" placeholder="Enter Buyer Email" type="email">
<button type="button" id="addbuyerbtn" class="btn btn-primary addbutton" style="margin-left: 19px;">+</button>
<button type="button" id="removebuyerbtn" class="btn btn-danger removebutton" style="margin-left: 19px;">-</button>
</div>
</div>
</div>

Here is an example on fiddle with find().
var count = $('#buyerblock').find('.form-group').size();
alert(count);
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<div class="col-md-6" id="buyerblock">
<div class="form-inline buyerdiv">
<div class="form-group">
<input class="form-control" name="buyername1" id="buyername1" style="margin-bottom: 3px;margin-right : 5px" value="" placeholder="Enter Buyer Name" type="text">
<input class="form-control" name="buyeremail1" id="buyeremail1" style="margin-bottom: 3px" value="" placeholder="Enter Buyer Email" type="email">
<button type="button" id="removebuyerbtn" class="btn btn-danger removebutton" style="margin-left: 19px;">-</button>
</div>
</div>
<div class="form-inline buyerdiv">
<div class="form-group">
<input class="form-control" name="buyername2" id="buyername2" style="margin-bottom: 3px;margin-right : 9px" value="" placeholder="Enter Buyer Name" type="text"><input class="form-control" name="buyeremail2" id="buyeremail2" style="margin-bottom: 3px" value="" placeholder="Enter Buyer Email" type="email">
<button type="button" id="removebuyerbtn" class="btn btn-danger removebutton" style="margin-left: 19px;">-</button></div></div>
<div class="form-inline buyerdiv">
<div class="form-group">
<input class="form-control" name="buyername3" id="buyername3" style="margin-bottom: 3px;margin-right : 9px" value="" placeholder="Enter Buyer Name" type="text">
<input class="form-control" name="buyeremail3" id="buyeremail3" style="margin-bottom: 3px" value="" placeholder="Enter Buyer Email" type="email">
<button type="button" id="addbuyerbtn" class="btn btn-primary addbutton" style="margin-left: 19px;">+</button>
<button type="button" id="removebuyerbtn" class="btn btn-danger removebutton" style="margin-left: 19px;">-</button>
</div>
</div>
</div>

Please try following code, just use following line
$("div.buyerdiv").last().find(".form-group").children().length;
var check = $("div.buyerdiv").last().find(".form-group").children().length;
alert(check);
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<div class="col-md-6" id="buyerblock">
<div class="form-inline buyerdiv">
<div class="form-group">
<input class="form-control" name="buyername1" id="buyername1" style="margin-bottom: 3px;margin-right : 5px" value="" placeholder="Enter Buyer Name" type="text">
<input class="form-control" name="buyeremail1" id="buyeremail1" style="margin-bottom: 3px" value="" placeholder="Enter Buyer Email" type="email">
<button type="button" id="removebuyerbtn" class="btn btn-danger removebutton" style="margin-left: 19px;">-</button>
</div>
</div>
<div class="form-inline buyerdiv">
<div class="form-group">
<input class="form-control" name="buyername2" id="buyername2" style="margin-bottom: 3px;margin-right : 9px" value="" placeholder="Enter Buyer Name" type="text"><input class="form-control" name="buyeremail2" id="buyeremail2" style="margin-bottom: 3px" value="" placeholder="Enter Buyer Email" type="email">
<button type="button" id="removebuyerbtn" class="btn btn-danger removebutton" style="margin-left: 19px;">-</button></div></div>
<div class="form-inline buyerdiv">
<div class="form-group">
<input class="form-control" name="buyername3" id="buyername3" style="margin-bottom: 3px;margin-right : 9px" value="" placeholder="Enter Buyer Name" type="text">
<input class="form-control" name="buyeremail3" id="buyeremail3" style="margin-bottom: 3px" value="" placeholder="Enter Buyer Email" type="email">
<button type="button" id="addbuyerbtn" class="btn btn-primary addbutton" style="margin-left: 19px;">+</button>
<button type="button" id="removebuyerbtn" class="btn btn-danger removebutton" style="margin-left: 19px;">-</button>
</div>
</div>
</div>

You have small mistake.
just use find() Instead of $
var check = $("div.buyerdiv").last().find(".form-group").children().length;
alert(check);

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Edit
This is code that is working:
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<uib-carousel interval="myInterval" no-wrap="noWrapSlides">
<uib-slide ng-repeat="image in post.images" active="slide.active" index="slide.id">
<img ng-src="{{addRoute(image.path)}}" style="margin:auto;">
</uib-slide>
</uib-carousel>
</div>
<div class="profile-image" style="background-image:url( {{ addRoute(post.profile_picture) }} ); background-size: cover;"></div>
<div class="post-content">
<div class="top-info">
<span><div class="glyphicon glyphicon-user"> </div></span><span class="post-username">{{ post.firstname}} {{ post.lastname }}</span>
<br>
<span><div class="glyphicon glyphicon-tag"> </div></span><span class="post-username">{{ post.category}}</span>
</div>
<div class="wrap">
<h1 class="post-title">{{post.title}} - <span class="price">{{post.price}}</span></h1>
<p class="description">
{{post.content}}
</p>
</div>
<button type="button" class="btn btn-danger btn-lg btn-block" ng-click="deletePost(post.id)">Delete Post</button>
</div>
</div>
</div>
</div>
Updated answer
NOTE: Angular validation works on name attribute
<!DOCTYPE html>
<html lang="en-US" ng-app="">
<script src="http://ajax.googleapis.com/ajax/libs/angularjs/1.4.8/angular.min.js"></script>
<link rel="stylesheet" href="http://maxcdn.bootstrapcdn.com/bootstrap/3.3.5/css/bootstrap.min.css">
<body>
<div class="card card-block signup-card">
<h1>Sign Up</h1>
<form role="form" name="signupForm" novalidate>
<!-- <div class="form-group text-center">
<span ng-show="imageError" style="color: #c0392b; padding-bottom: 1em; font-weight: bold;">Please choose a profile picture</span>
<div class="profile-image">
<div class="profile-preview">
<img ng-show="signupForm.file.$valid" ngf-src="picFile" class="thumb">
<button ng-click="picFile = null" ng-show="picFile">Remove</button>
</div>
<input type="file" id="file" ngf-select ng-model="picFile" name="file"
accept="image/*" ngf-max-size="2MB" required
ngf-model-invalid="errorFiles" style="display:none;">
<label for="file" class="btn btn-green btn-md">Upload Picture</label>
</div>
</div> -->
<div class="form-group" ng-class="{ 'has-error' : signupForm.email.$invalid && !signupForm.email.$pristine }">
<label for="email">Email ending in .edu</label>
<input type="email" class="form-control" edu-email-validate ng-model="user.email" id="email" placeholder="Email must end in .edu" name="email" required>
<div ng-show="signupForm.email.$touched">
<span ng-show="signupForm.email.$error.required" style="color: red;">email id not proper</span>
</div>
</div>
<div class="form-group" ng-class="{ 'has-error' : signupForm.firstname.$invalid && !signupForm.firstname.$pristine }">
<label for="fname">First Name</label>
<input type="text" class="form-control" id="fname" ng-model="user.firstName" placeholder="First Name" name="firstname" required>
<div ng-show="signupForm.firstname.$touched">
<span ng-show="signupForm.firstname.$error.required" style="color: red;" ng-cloak>Please enter first name</span>
</div>
</div>
<div class="form-group" ng-class="{ 'has-error' : signupForm.lastname.$invalid && !signupForm.lastname.$pristine }">
<label for="lastname">Last Name</label>
<input type="text" class="form-control" id="lastname" ng-model="user.lastName" placeholder="Last Name" name="lastname" required>
<div ng-show="signupForm.lastname.$touched">
<span ng-show="signupForm.lastname.$error.required" style="color: red;">last name required</span>
</div>
</div>
<div class="form-group" ng-class="{ 'has-error' : signupForm.username.$invalid && !signupForm.username.$pristine }">
<label for="username">Username</label>
<input type="text" class="form-control" id="username" ng-model="user.username" placeholder="Username" name="username" required>
<div ng-show="signupForm.username.$touched">
<span ng-show="signupForm.username.$error.required" style="color: red;">username required</span>
</div>
</div>
<div class="form-group">
<label for="gradclass">Graduation Year</label>
<input type="number" class="form-control" min="2016" max="2024" id="gradclass" name="gradclass" ng-model="user.gradClass" placeholder="Graduation Year" required>
<div ng-show="signupForm.school.$touched">
<span ng-show="signupForm.gradclass.$error.required" style="color: red;">Graduaton date required</span>
<span ng-show="signupForm.gradclass.$error.number" style="color: red;">Not valid number!</span>
<span ng-show="!signupForm.gradclass.$valid" style="color: red;">Graduation year between 2016 to 2024</span>
</div>
</div>
<div class="form-group">
<label for="school">School</label>
<select class="form-control" id="school" ng-model="user.schoolId" name="school" required>
<option disabled selected="selected" value="0">Choose School</option>
<option value="1">Champlain College</option>
<option value="2">UVM</option>
</select>
<div ng-show="signupForm.school.$touched">
<span ng-show="signupForm.school.$error.required" style="color: red;">please select a school</span>
</div>
</div>
<div class="form-group" ng-class="{ 'has-error' : signupForm.password.$invalid && !signupForm.password.$pristine }">
<label for="password">Password</label>
<input type="password" class="form-control" id="password" ng-model="user.password" equals="{{ user.passwordCheck }}" ng-minlength= "6" placeholder="Password" name="password" required>
<div ng-show="signupForm.password.$touched">
<span ng-show="signupForm.password.$error.required" style="color: red;">password required</span>
</div>
</div>
<div class="form-group" ng-class="{ 'has-error' : signupForm.password2.$invalid && !signupForm.password2.$pristine }">
<label for="password-2">Password Again</label>
<input type="password" class="form-control" id="password-2" ng-model="user.passwordCheck" equals=" {{ user.password }}" ng-minlength = "6" placeholder="Password Again" name="password2" required>
<div ng-show="signupForm.password2.$touched">
<span ng-show="signupForm.password2.$error.required" style="color: red;">confirmation required</span>
</div>
</div>
<div class="login-bottom-container">
<input type="submit" class="btn btn-green btn-lg" value="Sign up" ng-disabled="signupForm.$invalid" ng-click="submitted = true">
<!-- <button class="btn btn-green btn-lg" ng-disabled="signupForm.$invalid" ng-click="Sign up()">Sign up</button>-->
<div class="right">
<a ui-sref="terms" style="margin-top: 1em; display: block;">By signing up you agree to the terms and conditions of BlackMarket University</a>
</div>
<span class="progress" ng-show="picFile.progress >= 0">
<div style="width:{{picFile.progress}}%; background-color: #2980b9; color: #FFF; padding: 1em .5em;font-weight: 500; border-radius: 50%;" ng-bind="picFile.progress + '%'"></div>
</span>
<span ng-show="picFile.result">Upload Successful</span>
<span class="err" ng-show="errorMsg">Error making account.</span>
</div>
</form>
</div>
</body>
</html>
Angular validations work on the name attribute so try adding name instead of id to the input elements inside your form

Bootstrap 3 modal wont remove when I click close

I am trying to remove the ajax requested model when I user either hits close or cancel. I have tried the following.
<button type="button" class="close" data-dismiss="modal" aria-hidden="true">×</button>
<button type="button" class="btn btn-default" data-dismiss="modal">Close</button>
full code
<div id="registerModal" class="modal show" tabindex="-1" role="dialog" 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>
<h1 class="text-center">Sign Up</h1>
</div>
<div class="modal-body">
<form name="register" id="register" action="login" method="post" class="col-md-12 center-block">
<div class="row">
<div class="col-md-6">
<h4 class="text-center">Business Info</h4>
<div class="form-group">
<input type="text" name="businessname" class="form-control input-lg login" placeholder="Business Name">
</div>
<div class="form-group">
<input type="text" name="abnacn" class="form-control input-lg login" placeholder="ABN or ACN" >
</div>
<div class="form-group">
<input type="phone" name="phonenumber" class="form-control input-lg login" placeholder="Main Phone Number" >
</div>
<div class="form-group">
<input type="email" name="busiussemail" class="form-control input-lg login" placeholder="Main Email Address" >
</div>
<div class="form-group">
<input type="checkbox" name="TOS" >
<br>By registering and ticking this box for My Staff, you are agreeing to our TOS and Privacy Policy.
</div>
<!--<div class="form-group">
<select name="buildingtype" class="form-control select-lg">
<option value="0">--- none ---</option>
<option value="1">Unit</option>
<option value="2">Floor</option>
</select>
</div>
<div class="form-group">
<input type="unitnumber" name="number" class="form-control input-lg login" placeholder="Unit / Floow Number">
<input type="streetno" name="number" class="form-control input-lg login" placeholder="street number">
</div>
<div class="form-group">
<input type="text" name="streetname" class="form-control input-lg login" placeholder="Street Name">
</div>
<div class="form-group">
<input type="number" name="postcode" class="form-control input-lg login" onkeyup="getLocation()" placeholder="postcode">
</div>
<div class="form-group">
<input type="text" name="postcode" class="form-control input-lg login" placeholder="state" readonly>
</div>
<div class="form-group">
<input type="text" name="postcode" class="form-control input-lg login" placeholder="Country" readonly>
</div>-->
</div>
<div class="col-md-6">
<h4 class="text-center">User login set up</h4>
<div class="form-group">
<input type="text" name="emailadress" class="form-control input-lg login" placeholder="Admin staff Email Address">
</div>
<div class="form-group">
<input type="password" name="password" class="form-control input-lg login" placeholder="Password">
</div>
<div class="form-group">
<input type="text" name="passwordtwo" class="form-control input-lg login" placeholder="Password Repeat">
</div>
<div class="form-group">
<input type="text" name="firstname" class="form-control input-lg login" placeholder="First Name">
</div>
<div class="form-group">
<input type="text" name="sirname" class="form-control input-lg login" placeholder="Last Name">
</div>
<div class="form-group">
</div>
</div>
<button typpe="submit" onclick="signupmore();" class="btn btn-success col-md-12 btn-lg btn-block">Register</button>
</form>
</div>
<div class="modal-footer">
<button type="button" class="btn btn-default" data-dismiss="modal">Close</button>
</div>
</div>
</div>
</div>
You're manually adding the class 'show' to the modal.
If you remove that, then open the modal in JS you can close it.
http://www.bootply.com/EMWW2UWBtr
$('#registerModal').modal('show');
<div id="registerModal" class="modal" tabindex="-1" role="dialog" aria-hidden="true">

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