Develop Reference

OnClick event that adds text to a div, removes it if it exists, and groups by description name

I'm using FullCalendar that's filled with events that's populated from a mysql database. I'm using the eventClick function of FullCalendar to send the contents of the event to a separate div so I'll be able to print out the events that I've clicked.
Using this code below, I'm able to click on the event and it adds the lines that I need to the div, but it'll add duplicates because there's nothing stopping it from doing so as I'm just appending each event when I click on one.
// FullCalendar eventClick function
eventClick:function(event){
$(document).ready(function(){
document.getElementById("event_info").innerHTML += event.description + "<br>" + event.start + "<br>" + event.end;
});
}
// div where the information will print
<div class="col-sm-3" id="event_info"></div>
So I want to be able to click on a calendar event & send it to the div, but also check to see if the event has already been added and if it has, remove it. Finally, I'm looking to group the events by the description name when clicked.
I'm not sure where to start with adding those so any help or direction would be much appreciated. Thanks for your time and feel free to yell at me if I didn't explain something very well.

Why not simply include something like a class or data-attribute once you first add the event to the div, and then check if that is present, before adding another event?
var target = document.getElementById("event_info");
var isAlreadySet = target.getAttribute('data-eventAlreadySet');
var newHTML = event.description + "<br>" + event.start + "<br>" + event.end";
if (!isAlreadySet) {
target.innerHTML += newHTML;
target.setAttribute('data-eventAlreadySet', "true");
} else {
// your code here if the event is already set
// to replace the former event, use something like :
target.innerHTML = newHTML; // replaces the HTML
//instead of :
target.innerHTML += newHTML; // adds to the existing HTML
};

you need to check the div innerHtml before appending a new text. Please try the following code:
// FullCalendar eventClick function
eventClick:function(event){
$(document).ready(function(){
if($("div#event_info:contains("+event.description+")").length <=0)
{
document.getElementById("event_info").innerHTML += event.description + "<br>" + event.start + "<br>" + event.end";
}
});
}

JS/JQUERY How to give priority to a button click in the same DIV

My whole div is clickable and will change the page. However, inside my div, I have an element that is also clickable, but it should be prioritized sincee it stays on the page.
Basicly, i'm working on a webshop. clicking on a div will go to a new page with the requested data. However, the div includes a clickable image that adds the item to the wishlist.
In the code below, child refers to my whole clickable div, whereas my wishElement is the clickable image to refer to my wishlist.
$('#' + wishElement).click(function() {
window.location.href = "http://website.com/index.php?wish=" + child;
});
$('#' + child).click(function(){
window.location = "http://website.com/item.php?item=" + child + '&name=' + itemname + '&link=' + link;
});

Use event.stopPropagation(); to stop your child event from bubbling up:
$('#' + child).click(function(ev){
ev.stopPropagation();
window.location = "http://website.com/item.php?item=" + child + '&name=' + itemname + '&link=' + link;
});

My problem has been solved by the post coded above, however, the
ev.stopPropagation();
has to be inside my wishElement in order to work.
So thanks for the help!

Jquery: Getting the id of an html element: why one solution works and the other don't

I am referencing one element on an index page hidden initially and then showed with jquery on an index.html page. Can't explain why the first ones doesn't work, even if it should, but the last one does. I am getting the id of a pressed button "id='edit1'...2...3..etc" Thank you!
//why this doesn't work and the next one does???
/*$('.edit-btn').click(function(){
var id = $(this).attr('id');
console.log("btn1:", id);
});
$('.edit-btn').on('click', function(){
var id = $(this).attr('id');
console.log("btn1:", id);
});
*/
var id;
$("body").on("click",".edit-btn",function(){
id = (this.id).replace("edit","");
UPDATE:
The containers are hidden and shown using this function:
function hideWindowsAndShowOneWindow(sWindowId) {
$('.wdw').hide(); //fadeout 500
$('#' + sWindowId).show(); // fade in 500
}
So the div container, I am trying to reference by id was hidden after the page was loaded or maybe before the page is loaded. My guess is after the page is loaded...
The HTML:
<div class="wdw" id="wdw-events">
<h4>Events text</h4></br>
<div id="content"></div>
<h4>Edit Events</h4></br>
<div>
</div>
It is added/injected after the page was loaded with this js script, but still what has the last method special, just referencing through the document down to the id attribute of the button:
finalEventsLS.forEach(function (item) {
var date = item.date.day + "/" +item.date.month + "/" + item.date.year;
$('#content').append("<ul><li>" +
"Event nr.: " + item.id + " " +
"Name: " + item.name + " " +
"Topic: "+ item.topic + " " +
"Speaker: "+ item.speaker + " " +
"Date: " + date + " " +
"</li><button class='edit-btn' id='edit" + item.id + "'>Edit</button>
</ul>");
})

It's hard to tell, since you've only shared your jQuery. Update with your HTML please.
If you are referencing an element which was added to the DOM after the initial page load, .click will not work, because it only looks for elements initially loaded into the DOM. Instead, you would use the .on method, which looks for elements added to the DOM both before and after initial load.
UPDATE:
I should have looked closer. The second snippet of code that didn't work, but used the .on method, most likely didn't work because you are still trying to access the .edit-btn element, which at this point I'm assuming was added after page load. The code snippet that does work, is accessing the body element first. I will try to find and update with a better explanation, but the .on method still needs to find a element that existed in the DOM initially. From there, it can climb down the tree to find .edit-btn element.

Jquery mouse over adding css

I have a p tag inside an anchor, there many be a variable number of instances of this during the loop. My goal is to on hover make the p tag expand and show more information. I have this so far in terms of mouseover.
however this is not working for me. does anyone have any ideas how to achieve this? someonehow i need to use the passed parameter 'e' to change the height
boxOPToneplustwo : this is an a tag as well.
$('.boxOPToneplustwo').mouseover(function (e) {
console.log("in");
$(e.target).next('p').addClass("popupHighlight");
});
element creation:
anchorElement = "<a id='anchor" + countWide + "' class=\"boxOPToneplustwo\" alt=\'"+ image_website +"' style=\"cursor:pointer;width:"+ itemWidth + "px"+";height:"+anchorHeight+";position:absolute;left:"+ locationLeft + "px"+";top:0.3%;\" ><p id=\"test\" class=\"popupDynamic\"> " + popupImageTitles[i] + "</p>";
anchorElement += '</a>';

with jQuery you can use this to refer to the handled element.
$('.boxOPToneplustwo').mouseover(function (e) {
console.log("in");
$(this).next('p').addClass("popupHighlight");
});
http://api.jquery.com/mouseover/
Console play
e.g: trying putting the following code in the console (F12) and see what it does to SO :P
$("p, span").mouseover(function(){ $(this).css("display", "none"); } );

jquery html function isn't working

I am tring to show twitter user information on my web page. I have created a div tag which is will contain user information using jquery. I want to show user information when the cursor is over this div tag. Below is my code in jquery:
var hideDelay = 500;
var currentID;
var hideTimer = null;
var container;
$(function () {
container = $('<div id="personPopupContainer" style=\"max-width:400px;\">'
+ '<table border="0" cellspacing="0" cellpadding="0" align="center" class="personPopupPopup">'
+ '<tr>'
+ ' <td class="corner topLeft"><div style="position:absolute;top:15px;left:-16px;"><img src="images/balloon_tail.png" /></div></td>'
+ ' <td class="top"></td>'
+ ' <td class="corner topRight"></td>'
+ '</tr>'
+ '<tr>'
+ ' <td class="left"></td>'
+ ' <td><div id="personPopupContent"></div></td>' //the div tag is here
+ ' <td class="right"></td>'
+ '</tr>'
+ '<tr>'
+ ' <td class="corner bottomLeft"> </td>'
+ ' <td class="bottom"></td>'
+ ' <td class="corner bottomRight"></td>'
+ '</tr>'
+ '</table>'
+ '</div>');
$('body').append(container);
$('#personPopupContainer').mouseover(function () {
if (hideTimer)
clearTimeout(hideTimer);
});
$('#personPopupContainer').mouseout(function () {
if (hideTimer)
clearTimeout(hideTimer);
hideTimer = setTimeout(function () {
container.css('display', 'none');
}, hideDelay);
});
});
That is working well. But the below code that is
$('#personPopupContent').html('<center><img src="images/loading_sm.gif" /></center>');
isn't working.
function UserMouseOver(o) {
var obj = $("#" + o);
var Settings = obj.attr('rel').split(',');
var UserID = Settings[0];
var ScreenName = Settings[1];
if (hideTimer)
clearTimeout(hideTimer);
var pos = obj.offset();
var width = obj.width();
if (pos != null && width != null) {
container.css({
left: (pos.left + width) + 20 + 'px',
top: pos.top - 23 + 'px'
});
}
$('#personPopupContent').html('<center><img src="images/loading_sm.gif" /></center>');
}
what I am doing wrong? Can someone please help me?

Note: in the actual code there is no typo ( the image tag isn't closed early ) but in the code you focus on, there is a typo, as Stian points out.
Longshot.. Is the image even available? You can use this plugin:
https://github.com/desandro/imagesloaded
..then change the HTML once the image is known to be in the DOM.

Your question does not entirely explain what you are trying to do. However, I can at least explain why your image isn't showing.
First, you need to call your function UserMouseOver(o) from inside $('#personPopupContainer').mouseover(function () {. . .}. The way you coded it, UserMouseOver(o) will never get called, and none of the logic in the function will get executed.
Second, in your $('#personPopupContainer').mouseout(function () {. . .}, the line container.css('display', 'none') is hiding your entire container object (ALL your HTML!) on mouseout. That will cause your "loading" gif to never display, because the div you are trying to display (personPopupContent) resides within the container object you just set to display: none! You should set the display to none only on the particular element you are trying to hide; for example, you could add id="balloon_tail" to your balloon image and change the Javascript line to $('#balloon_tail).css('display', 'none').
Third, you will get an error on the line var Settings = obj.attr('rel').split(','); because you did not include a rel attribute in your outermost element personPopupContainer. You will need to add a rel attribute of comma separated strings to this element for this line to work. (However, according to W3C, the only official element that uses the rel attribute is <a>, the anchor tag.)
Finally, I would add an image tag to #personPopupContent to make it something like <div id="personPopupContent"><img src="" id="loading_sm" /></div>. Then you can change
$('#personPopupContent').html('<center><img src="images/loading_sm.gif" /></center>');
to
$('#loading_sm').attr("src", "images/loading_sm.gif");
but that's just me.
I hope this helps!

If the code is working as you stated (I can't see where you are calling your mouse over method) and it's only the image that isnt showing.
Use a Web Debugger to check for any 404 errors e.g. http://www.fiddler2.com/fiddler2/ or even your browser's F12 web debugger.
Make sure your path to the image is correct.
UPDATE
Okay, now that we know it works. Try the following : Add a class to #personPopupContent e.g. class="popupContent" . Change the line of code where you set the html to call the class selector instead of the ID selector. Then to make sure that jQuery is getting the html element to add the content to, add some text to it.
//All the other code
+ ' <td><div id="personPopupContent" class="popupContent"></div></td>'
//All the other code
Change the selector in UserMouseOver() method :
$('.popupContent').html('<center><img src="images/loading_sm.gif" /></center>');
PLEASE MAKE SURE
I don't know where you are calling the UserMouseOver() method, so please add a Document Ready around the piece of jquery.
function UserMouseOver(o) {
//All the other code
$(function () {
$('.popupContent').html('<center><img src="images/loading_sm.gif" /></center>');
});
}