Develop Reference

Click outside an element doesn't work

I have this code:
function showAll(el){
var id = el.parentNode.id;
var all= document.getElementById(id).getElementsByClassName('items')[0];
if(all.style.display === 'block'){
all.style.display = 'none';
} else{
all.style.display = 'block';
window.addEventListener('mouseup', function(e){
document.getElementById('test').innerHTML = e.target.className;
if(e.target != all){
all.style.display = 'none';
}
});
}
}
<div id="parent">
<div class="selected" onClick="showAll(this);">
</div>
<div class="items" style="display: none">
</div>
</div>
Basically what i want to achieve is: click on selected to display items which is now hidden after that if i click again on selected or if i click outside of items(a random spot on that page or even on selected) i want to be able to hide items.
The problem is that without the EventListener when i click on selected it works to display items and then if i click again on selected it works to hide items but if i click on a random spot it doesn't work to close items.
But when i add EventListener and i click on selected it works to click a random spot to close items but it doesn't work to click selected again to close items.
Can anybody help me with a full JavaScript explanation, please?

You're going to want to use highly reusable code. I use change() and id_() on my web platform all of the time and it's very direct and simple. In the below example the second parameter will make the class empty (you can also use id_('items').removeAttribute('class') for a cleaner DOM (Document Object Model)).
HTML
<input onclick="change(id_('items','');" type="button" value="Display Items" />
<div clas="hidden" id="items"><p>Items here.</p></div>
CSS
.hidden {display: none;}
JavaScript
function change(id,c)
{
if (id_(id)) {id_(id).className = c; if (id_(id).className=='') {id_(id).removeAttribute('class');}}
else if (id) {id.className = c; if (id.className=='') {id.removeAttribute('class');}}
else {alert('Error: the class id \''+id+'\' was not found or has not yet been imported to the DOM.\n\nNew class intended: '+c);}
}
function id_(id)
{
if (id == '' && window['console']) {console.log('Developer: empty id called from: '+id_.caller.toString().split('function ')[1].split('(')[0]);}
return (document.getElementById(id)) ? document.getElementById(id) : false;
}
This code exists from years of refining the same platform instead of industry standard drama of pointlessly changing things. You are two clicks from finding more highly reusable functions on my platform's JavaScript documentation from the link in my profile.

Toggling Background Color on Click with Javascript

I am working on a class project and need to be able to toggle the background color of a transparent png on click. I have been working through a number of examples from the site, but I can't get it working. I am a total novice at Javascript and haven't had luck trying to plug in jQuery code either.
Here is the targeted section:
<div class="expenseIcon"><a href="#">
<img src="images/mortgage.png"></a><br/>
<p>Rent or Mortgage</p>
</div>
On clicking the linked image, the goal is for the background on the image to change to green. Clicking it again would change it back to the default, white. Here's the CSS I'd like to toggle on/off with click.
.colorToggle {
background: #A6D785;
}
I had tried adding class="iconLink" to the href and class="iconBox" to the image with the following Javascript adapted from another post, but it didn't work.
var obj = {};
$(document).ready(function () {
$(".iconLink").click(function () {
var text = $(this).find(".iconBox");
obj.var1 = text;
//alert(obj.var1);
//return false;
$('.iconBox').removeClass('colorToggle');
$(this).addClass('colorToggle')
});
});
Any advice would be greatly appreciated!

Let's break down what is happening with your current code when you click the link.
var obj = {};
$(document).ready(function () {
$(".iconLink").click(function () {
var text = $(this).find(".iconBox");
obj.var1 = text;
$('.iconBox').removeClass('colorToggle');
$(this).addClass('colorToggle')
});
});
JQuery finds all elements with the classname "iconBox". In your case, this is the img element. The reference to that element is then saved in "obj.var1". You do not end up doing anything with this reference, so these two lines can be removed.
All elements with the class "iconBox" have the class "colorToggle" removed. Your img element didn't have this class on it, so nothing happens.
The class "colorToggle" is added to the anchor element. Yes! Now the element wrapping the img has a background color.
Unfortunately, clicking the anchor tag again won't do anything, since the anchor tag will already have the "colorToggle" class and all we would be doing would be trying to add it again. Hmm. Let's try changing addClass to toggleClass. Here's our new code:
$(document).ready(function () {
$(".iconLink").click(function () {
$(this).toggleClass('colorToggle');
}
});
Also, note that because we're working with the anchor element, the p element won't be affected by this change. If you want the entire div to change background colors, use this line instead:
$(".expenseIcon").toggleClass('colorToggle');

Using the given markup:
<!-- to toggle the bg-color onClick of anchor tag -->
<div class="expenseIcon">
<a href="#">
<img src="images/mortgage.png">
</a>
<br/>
<p>Rent or Mortgage</p>
</div>
since the question asks for javascript, heres an option for updating the background-color of an element using the built-in js.style method
//get a handle on the link
//only one element w/ className 'expenseIcon'
//first child of 'expenseIcon' is the anchor tag
var link = document.getElementsByClassName('expenseIcon')[0].children[0];
//get a handle on the image
var image = link.children[0];
//listen for click on link & call bgUpdate()
link.addEventListener('click', bgUpdate, false);
function bgUpdate() {
if(image.style.backgroundColor === 'lightgoldenrodyellow'){
image.style.backgroundColor = 'aliceblue';
} else if (image.style.backgroundColor === 'aliceblue') {
image.style.backgroundColor = 'lightgoldenrodyellow';
}
else console.log('image bgColor: ' + image.style.backgroundColor);
}
a similar example

css
.expenseIcon{
background: red;
}
.colorToggle {
background: blue;
}
jquery
$(".expenseIcon").click(function () {
$('.expenseIcon').toggleClass('colorToggle');
});
By default, the div will have expenseIcon background. ToggleClass will toggle the div class with colorToggle so will override the previous color.
You don't need an hyperlink tag A to manage clicks, just put it on the DIV.

HTML/jQuery Limit no. of divs in container

(firstly I recommend seeing the related image)
I have 3 container having same class .container. Also, user can add child divs dynamically into the containers. The user will start adding divs (that is .parent) by clicking '.add' div inside each '.parent'.
The containers can have at max 3 div. If the user has added 3 divs already then the next div should go in the second container and so on. Once the last container(the third one) is full, an alert should pop up saying "You cannot add anymore divs."
I have two questions:
Using jquery how can I limit the number of '.parent' divs per container to 3. If the user tries to add another it is added to container 2 (unless container 2 has 3 child divs, then it would go to container 3)?
Once the container of page 3 is full (3 divs) an alert should pop up saying "You cannot add anymore divs".
The only snippet of code that I have is not working. Please help me with the code. I am novice in all this stuff.
Thanks in advance.
Related image: [1]: http://i.stack.imgur.com/zi78d.png
Sample code:
<html>// the containers
<div class="container"></div>
<div class="container"></div>
<div class="container"></div>//divs that are supposed to be appended
<div class="parent">
<div class="add"></div>
</div>
<div class="parent">
<div class="add"></div>
</div>
<div class="parent">
<div class="add"></div>
</div>
<div class="parent">
<div class="add"></div>
</div>. . .
</html>
.
<script>
var $pages = $('.container');
var child = '$('.add ').parent()';
$(".add").on('click', function () {
var childAdded = false;
$pages.each(function () {
var $container = $(this);
if ($container.children().length < 3) {
$container.append.('child');
childAdded = true;
return false;
}
});
if (!childAdded) {
alert("You can not add any more divs");
}
});
</script>

Several problems in your code
You want the instance of the parent class when you click on the button, not all .parent
You have syntax errors using quotes around jQuery objects that shouldn't be there.
Here's a simple approach using filter() method.
$(".add").on('click', function () {
/* filter $pages down to first available one with space */
var $page=$pages.filter(function(){
return $(this).children().length < 3;
}).first();
if( !$page.length ){ /* if no elements returned from filter, they are all full */
alert("You can not add any more divs");
}else{
/* get instance of parent based on button that was clicked which is "this" */
var $parent=$(this).closest('.parent');
$page.append( $parent );
}
});
DEMO
filter() API docs

You have to track the amount of divs you have added yourself. Then, use this information to determine which .container you should put it in. Something like this:
var added = 0;
...
$(".add").on('click', function () {
var target;
if(added<3) {
target = $pages[0];
} else if (added<6) {
target = $pages[1];
} else if (added<9) {
target = $pages[2];
} else {
alert("You can not add any more divs");
return
}
$(target).append($(this).parent());
added += 1;

how do I add class of div from other page?

I want to remove class of div id from other page anchor link.
firstPage.html
<div class="question show" id="a1">
Sample 1
</div>
<div class="question" id="a2">
Sample 2
</div>
list.html
$(function () {
$("a").click(function () {
$("#a2").addClass('question show');
});
});
</script>
</head>
<body>
Link 1
Link 2
</body>
I want to add class addClass('question show') to that div id which is clicked.
I tried here with Link1 for id=a1
But I'm failed to set class ('question show') help me to correct my code
Please check code here
http://plnkr.co/edit/fzdfjdrRbcWmir5wHcJW?p=preview

I'm taking a different approach. I'll not add the function to list.html. Let the page firstPage.html be called with the value. We will capture the anchor from firstPage.html.
Also, since your all divs have the class 'question'; I'm ignoring that class and targeting only 'show' class.
So, load this function with your firstPage.html:
$(document).ready(function(){
var call = $(location).attr('href').split('#');
var ancr = $.trim(call[1]);
if(ancr === undefined || ancr == ''){
// Anchor not set, do nothing
} else {
if (!$('#'+ancr).hasClass('show')) {
$('#'+ancr).addClass('show');
}
}
});
I also assume you don't have multiple divs with same ID (which generally should not be).
I hope this will do what you need.

Show div once clicked and hide when clicking outside

I'm trying to show the #subscribe-pop div once a link is clicked and hide it when clicking anywhere outside it. I can get it to show and hide if I change the:
$('document').click(function() {
TO
$('#SomeOtherRandomDiv').click(function() {
HTML:
<div id="footleft">
Click here to show div
<div id="subscribe-pop"><p>my content</p></div>
</div>
Script:
<script type="text/javascript">
function toggle_visibility(id) {
var e = document.getElementById("subscribe-pop");
if(e.style.display == 'block')
e.style.display = 'none';
else
e.style.display = 'block';
}
}
$('document').click(function() {
$('#subscribe-pop').hide(); //Hide the menus if visible
});
$('#subscribe-pop').click(function(e){
e.stopPropagation();
});
</script>

You have to stop the event propagation in your container ('footleft' in this case), so the parent element don't notice the event was triggered.
Something like this:
HTML
<div id="footleft">
<a href="#" id='link'>Click here to show div</a>
<div id="subscribe-pop"><p>my content</p></div>
</div>
JS
$('html').click(function() {
$('#subscribe-pop').hide();
})
$('#footleft').click(function(e){
e.stopPropagation();
});
$('#link').click(function(e) {
$('#subscribe-pop').toggle();
});
See it working here.

I reckon that the asker is trying to accomplish a jquery modal type of display of a div.
Should you like to check this link out, the page upon load displays a modal div that drives your eye into the center of the screen because it dims the background.
Moreover, I compiled a short jsFiddle for you to check on. if you are allowed to use jquery with your requirements, you can also check out their site.
Here is the code for showing or hiding your pop-up div
var toggleVisibility = function (){
if($('#subscribe-pop').is(":not(:visible)") ){
$('#subscribe-pop').show();
}else{
$('#subscribe-pop').hide();
}
}

Changing $(document).click() to $('html').click() should solve the main problem.
Secondly, you do not need the toggle_visibility() function at all, you can simply do:
$('#subscribe-pop').toggle();
Ref: changed body to html as per this answer: How do I detect a click outside an element?