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What is the correct way to use PARENT and FIND?

I try to get the value of input type=text by finding it in the parent DIV with class "half_weight". But I get the result NaN and it should be 0.8.
This is HTML:
<div class="add_controller amt no_space half_weight">
<div class="col s2 adds">
<a id="" href="#" class="button-minus product_quantity_down">
<i class="material-icons">remove</i>
</a>
</div>
<div class="col s2 adds">
<a href="#" class="button-plus product_quantity_up">
<i class="material-icons">add</i>
</a>
</div>
<div class="col s5 qty">
<div class="row">
<span class="col s6 qty_value">
<input type="text" name="" id="" stepquan="0.8" rtype="2" value="0.8" class="text" />
</span>
</div>
</div>
This is my jQuery:
$('.button-plus').on('click', function() {
valTemp = parseFloat($(this).parent('.half_weight').find('.qty_value').siblings('input[type=text]').val());
alert(valTemp);
});

You don't need siblings() (it refers to neighbors and you have got parent-child relationship). I put just
$(this).parents(".half_weight").find('.qty_value input[type=text]').val();
and it shows 0.8.
$('.button-plus').on('click', function() {
var valTemp = parseFloat($(this).parents(".half_weight").find('.qty_value input[type=text]').val());
alert(valTemp);
});
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<div class="add_controller amt no_space half_weight">
<div class="col s2 adds">
<a id="" href="#" class="button-minus product_quantity_down">
<i class="material-icons">remove</i>
</a>
</div>
<div class="col s2 adds">
<a href="#" class="button-plus product_quantity_up">
<i class="material-icons">add</i>
</a>
</div>
<div class="col s5 qty">
<div class="row">
<span class="col s6 qty_value">
<input type="text" name="" id="" stepquan="0.8" rtype="2" value="0.8" class="text" />
</span>
</div>
</div>

Issue in opening modal over modal?

So I am trying to open modal over other modal which is not working. there is one link say "login" which opens up another modal for me. why this is happening ?
primary modal call from following
<ul class="one-page-menu" data-easing="easeInOutExpo" data-speed="1250" data-offset="160">
<li>Sign Up</li>
<li class="menu-item-emphasis"><div>Login</div></li>
</ul>
primary modal
<div class="modal1 mfp-hide" id="modal-get-started" >
<div class="block divcenter" style="background-color: #FFF; max-width: 500px;">
<div style="padding: 50px;">
<form name="reg_form" id="get-started-form" class="nobottommargin">
<div class="row clearfix">
<div class="col-sm-12">
<h3 class="font-body">Register for Free Trial</h3>
</div>
</div>
<button class="button button-rounded btn-block t400 center capitalize si-facebook si-colored noleftmargin norightmargin" ng-click="fbLogin()">Login with Facebook</button>
<button id="customGoogleBtn1" class="button button-rounded btn-block t400 center capitalize si-gplus si-colored nomargin">Login with Google</button>
<br>
<div style='padding-top: 30px;padding-left: 50px' ng-show ="errorAlreadyRegister">
<span style='color:red;x' >Seems already registered. <a ng-click= "closePopup()" href="#" > Log in </a> instead?</span>
</div>
</form>
</div>
</div>
</div>
wants to open on login link
<div class="modal1 mfp-hide" id="modal-login" >
<div class="block divcenter" style="background-color: #FFF; max-width: 400px;">
<div style="padding: 50px;">
<h3 class="font-body">Login to your Account</h3>
<form class="nobottommargin">
<div class="col_full">
<label class="font-body capitalize" for="login-form-modal-username">Username:</label>
<input type="text" id="login-form-modal-username" name="login-form-modal-username" value="" class="form-control" />
</div>
<div class="col_full">
<label class="font-body capitalize" for="login-form-modal-password">Password:</label>
<input type="password" id="login-form-modal-password" name="login-form-modal-password" value="" class="form-control" />
</div>
<div class="col_full nobottommargin">
<button class="button button-rounded nomargin" id="login-form-modal-submit" name="login-form-modal-submit" value="login">Login</button>
Forgot Password?
</div>
</form>
<div class="line line-sm"></div>
<button class="button button-rounded btn-block t400 center capitalize si-facebook si-colored noleftmargin norightmargin" ng-click="fbLogin()">Login with Facebook</button>
<button id="customGoogleBtn" class="button button-rounded btn-block t400 center capitalize si-gplus si-colored nomargin">Login with Google</button>
<!-- Login with Google -->
</div>
</div>
</div>
function called on login link
$scope.closePopup = function(){
$.magnificPopup.close();
$.magnificPopup.open({
items: {
src: '#modal-login'
}
});
}

Call Action method from jquery popup modal

OK I have made many searches before posting this but I couldn't really get what I needed, the thing is I have a popup modal for login/register
<!--Signin/Signup container-->
<div id="modal" class="popupContainer" style="display:none;">
<section class="popupBody">
<!-- Social Login -->
<div class="social_login">
<div class="">
<a href="#" class="social_box fb">
<span class="icon"><i class="fa fa-facebook"></i></span>
<span class="icon_title">سجل عن طريق الفيس بوك</span>
</a>
<a href="#" class="social_box google">
<span class="icon"><i class="fa fa-google-plus"></i></span>
<span class="icon_title">سجل عن طريق كوكل</span>
</a>
</div>
<div class="centeredText">
<span>أو استخدم الايميل الخاص بك</span>
</div>
<div class="action_btns">
<div class="one_half">Login</div>
<div class="one_half last"> Register</div>
</div>
</div>
<!-- Username & Password Login form -->
<div class="user_login">
<form>
<label>الايميل / اسم المستخدم</label>
<input type="text" />
<br />
<label>كلمة السر</label>
<input type="password" />
<br />
<div class="checkbox">
<input id="remember" type="checkbox" />
<label for="remember">احفظ معلومات الدخول على هذا الجهاز</label>
</div>
<div class="action_btns">
<div class="one_half"><i class="fa fa-angle-double-left"></i> رجوع</div>
<div class="one_half last">Login</div>
</div>
</form>
هل نسيت كلمة المرور؟
</div>
<!-- Register Form -->
<div class="user_register">
<form>
<label>الاسم الكامل</label>
<input type="text" />
<br />
<label>عنوان البريد الألكتروني</label>
<input type="email" />
<br />
<label>كلمة المرور</label>
<input type="password" />
<br />
<div class="checkbox">
<input id="send_updates" type="checkbox" />
<label for="send_updates">أرسل لي رسائل في حال وجود أي تحديثات</label>
</div>
<div class="action_btns">
<div class="one_half"><i class="fa fa-angle-double-left"></i> Back</div>
<div class="one_half last">Register</div>
</div>
</form>
</div>
</section>
</div>
<!--Signin/Signup End-->
and this is the script:
<script>
// Plugin options and our code
$("#modal_trigger").leanModal({
top: 100,
overlay: 0.6,
closeButton: ".modal_close"
});
$(function () {
// Calling Login Form
$("#login_form").click(function () {
$(".social_login").hide();
$(".user_login").show();
return false;
});
// Calling Register Form
$("#register_form").click(function () {
$(".social_login").hide();
$(".user_register").show();
$(".header_title").text('Register');
return false;
});
// Going back to Social Forms
$(".back_btn").click(function () {
$(".user_login").hide();
$(".user_register").hide();
$(".social_login").show();
$(".header_title").text('Login');
return false;
});
});
/*--------------------------------*/
</script>
</div>
Now what I need is to create an action method so when the user click Register or Login it get called to do what necessary
How can I do that. my knowledge in jquery and javascript is kind of limited
I will appreciate any help.
thank you in advance

Attach ids to your buttons:
<div id = "login_button" class="one_half last">Login</div>
Then attach an event listener to them:
$("#login_button").click(function() {
// Do something
});
Same for the Register button.

Unable to copy value from hidden field into another HTML element?

Using link
https://demo.owncloud.org/index.php/apps/files/?dir=/&fileid=2
I want to use the hidden field
HTML
<div id="controls" style="width: 1100px; min-width: 1100px;">
<div class="breadcrumb">
<div class="crumb svg last" data-dir="/">
<a href="/index.php/apps/files?dir=/">
<img class="svg" src="/core/img/places/home.svg" alt="Home">
</a>
</div>
</div>
<div class="button view-switcher" id="gallery-button">
<div id="button-loading"></div>
<img alt="Gallery view" src="/core/img/actions/toggle-pictures.svg" class="svg">
</div>
<div class="actions creatable" style="">
<a class="button new" href="#" data-original-title="" title="">
<span class="icon icon-add"></span>
<span class="hidden-visually">New</span>
</a>
<div id="uploadprogresswrapper">
<div id="uploadprogressbar">
<em style="display:none" class="label outer">
<span class="desktop">Uploading...</span>
<span class="mobile">...</span>
</em>
</div>
<input type="button" value="" style="display:none" class="stop icon-close">
</div>
</div>
<div id="file_action_panel" activeaction="false"></div>
<div class="notCreatable notPublic hidden">
You don’t have permission to upload or create files here
</div>
<input type="hidden" id="permissions" value="31" name="permissions">
<input type="hidden" value="537919488" name="MAX_FILE_SIZE" id="max_upload">
<input type="hidden" value="537919488" id="upload_limit">
<input type="hidden" value="979339338" id="free_space">
<input type="hidden" value="(max )" class="max_human_file_size">
Javascript
The relevant section for the JS is show below, please view
if (response.data !== undefined && response.data.uploadMaxFilesize !== undefined) {
$('#max_upload').val(response.data.uploadMaxFilesize);
$('#free_space').val(response.data.freeSpace);
$('#upload.button').attr('data-original-title', response.data.maxHumanFilesize);
$('#usedSpacePercent').val(response.data.usedSpacePercent);
$('#owner').val(response.data.owner);
$('#ownerDisplayName').val(response.data.ownerDisplayName);
Files.displayStorageWarnings();
to be displayed using code
My name is <span id="free_space"></span> ...!!!
The code is not working, I tried it with firebug
working code(try)
<script type="text/javascript">
document.getElementById('dem0').value=document.getElementById("free_space").value
</script>
My name is <span id="dem0"></span> ...!!!
solved
<script type="text/javascript">
var e=document.getElementById("free_space").value;
document.getElementById("dem0").textContent=e;
</script>

jQuery .next().slideToggle() not working

I have am creating my own comments system from scratch. The comments themselves are dynamically generated from those in the database and for each comment I am appending a reply textarea and button for the user to post a reply to someone's comment.
The problem is that when I click the reply link it opens a reply box for each comment not just for the comment the user wishes to reply to.
The HTML:
<a class="comment-reply">Reply</a>
<!--REPLY BOX -->
<div class="reply-box clearfix">
<?php if($signed_in) { ?>
<!-- reply input textarea -->
<div class="container">
<form id="reply-form">
<textarea id="reply" rows="1" placeholder="Your reply here..."></textarea>
<p><input id="reply-btn" type="submit" class="btn btn-primary floatL" value="Post reply" /></p>
</form>
</div>
<?php } ?>
</div>
And the jQuery:
<script>
$(document).ready(function(e) {
//hide reply box on page load
$('.reply-box').hide();
//show each individual reply box on click
$('.comment-reply').click(function() {
//$('.reply-box').stop().slideToggle("fast"); /* This opens all div */
$(this).next('.reply-box').stop().slideToggle("fast"); /* This doesn't work at all */
});
});
</script>
What am I doing wrong?
edit
Ok this is the full HTML:
<!--POSTED COMMENT-->
<div id="comment-<?php echo $comment_id; ?>" class="media">
<div class="pull-left">
<img style="height: 48px; width: 48px;" src="<?php echo $c_member_avatar; ?>" class="img-rounded" alt="">
<div style="font-size:1.2em">
<a style="color: #888888;" href="#">
<span class="glyphicon glyphicon-thumbs-up"></span>
</a>
<a style="color: #888888;" href="#">
<span class="glyphicon glyphicon-thumbs-down"></span>
</a>
</div>
</div>
<div class="media-body">
<h5 style="margin: 0 0 5px 0;"><?php echo $c_member_username; ?><small> <?php echo $comment_timestamp; ?> ago</small><small style="margin-right: 20px;" class="floatR"><a id="comment-flagged" href="#"><span style="color: #5A5A5A" title="Flag as inappropriate" class="glyphicon glyphicon-flag"></span></a></small></h5>
<p class="clearfix" style="margin-bottom:0px;"><?php echo $commentPosted; ?></p>
<?php if($signed_in && $username == $c_member_username) { ?>
<small class="floatL"><a class="comment-reply" id="<?php echo $comment_id; ?>" >Reply</a></small>
<small class="floatL"><a class="comment-remove" id="<?php echo $comment_id; ?>">Remove comment</a></small>
<?php } else if($signed_in) { ?>
<small class="floatL"><a class="comment-reply" id="<?php echo $comment_id; ?>" >Reply</a></small>
<?php } else { ?>
<small class="floatL">Sign in to reply to this comment</small>
<?php } ?>
</div>
</div>
<!--END POSTED COMMENT-->
<!--REPLY BOX -->
<div class="reply-box clearfix">
<?php if($signed_in) { ?>
<!-- comment input textarea -->
<div id="comment-box" class="container">
<form id="reply-form">
<textarea id="reply" rows="1" placeholder="Your reply here..."></textarea>
<p style="padding-top: 15px;"><input id="reply-btn" type="submit" class="btn btn-primary floatL" value="Post reply" /></p>
<p style="color:red; padding-left: 140px;" id="error"></p>
</form>
</div>
<?php } ?>
</div>
<!--END REPLY BOX-->
don't mind the styling, I am still prototyping
edit - added rendered page
<!--POSTED COMMENT-->
<div id="comment-139" class="media">
<div class="pull-left">
<img style="height: 48px; width: 48px;" src="members/nicklaw/assassin_creed_black_flag _2-140x140.jpg" class="img-rounded" alt="">
<div style="font-size:1.2em">
<a style="color: #888888;" href="#">
<span class="glyphicon glyphicon-thumbs-up"></span>
</a>
<a style="color: #888888;" href="#">
<span class="glyphicon glyphicon-thumbs-down"></span>
</a>
</div>
</div>
<div class="media-body">
<h5 style="margin: 0 0 5px 0;">nicklaw<small> 9 seconds ago</small><small style="margin-right: 20px;" class="floatR"><a id="comment-flagged" href="#"><span style="color: #5A5A5A" title="Flag as inappropriate" class="glyphicon glyphicon-flag"></span></a></small></h5>
<p class="clearfix" style="margin-bottom:0px;">this is a comment</p>
<small class="floatL"><a class="comment-reply" id="139" >Reply</a></small>
<small class="floatL"><a class="comment-remove" id="139">Remove comment</a></small>
</div>
</div>
<!--END POSTED COMMENT-->
<!--REPLY BOX -->
<div class="reply-box clearfix">
<!-- comment input textarea -->
<div id="comment-box" class="container">
<form id="reply-form">
<textarea id="reply" rows="1" placeholder="Your reply here..."></textarea>
<p style="padding-top: 15px;"><input id="reply-btn" type="submit" class="btn btn-primary floatL" value="Post reply" /></p>
<p style="color:red; padding-left: 140px;" id="error"></p>
</form>
</div>
</div>
<!--END REPLY BOX-->

Maybe the following code will help, I am using the parentElement of the current element and then get the textarea that is in the same group. When attaching the click handler I use a div with class comments-container and attach on click only for anchors (second parameter in the .on function).
<!DOCTYPE html>
<html>
<head>
<script src="http://code.jquery.com/jquery-1.10.2.js"></script>
</head>
<body>
<div class="comments-container">
<div class="comment">
Comment1
comment<br>
<textarea></textarea>
</div>
<div class="comment">
Comment2
comment<br>
<textarea></textarea>
</div>
<div class="comment">
Comment3
comment<br>
<textarea></textarea>
</div>
</div>
<script>
$("textarea").hide();
$(".comments-container").on("click","a",function(e){
e.preventDefault();
$("textarea").hide();
$(this.parentElement.getElementsByTagName("textarea")[0])
.stop().slideToggle("fast");
});
</script>
</body>
</html>

The problem is that the .reply-box is not at the same level in the DOM as the .comment-reply link that is clicked (i.e. not a sibling). If you see the documentation for .click you will see that it only searches the siblings.
I think you want the .parents(".media").next(".reply-box")