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Is there a way to add a javascript button that would remove an added graph

Dear StackOverflow Users
I am currently working on a data analysis web app.
Now in this app you can drag and drop graphs and you can remove it by unselecting it. Also you can add the graph with a plus button. Only problem is there is no way to unselect it when you add it by that plus button(Which I put the code of ""$("#tb_add").button"" )
What I am trying to do is find a way to write a function button that would undo what the add graph button did, or close it or delete it, since there is no unselect button.
My question is: "Is there such a javascript function that would undo or remove what the $("#tb_add").button did.
so let's say I want to add a button called $("#tb_remove").button
is there any simple javascript that would simply undo what was added ?
If there is what is it called ? can you direct me to it ?
Thank you

In your click handler you could add a way to remove the section. jQuery has a .remove() function. You could use classes to control it as well.
if($(this).hasClass("added")){
$(this).removeClass("added");
$("panel selector").remove();
$(this).addClass("removed");
} else {
analysis.addPanel();
$(this).removeClass("removed");
$(this).addClass("added");
}
something along those lines should help you.

close select2 dropdown via javascript/jquery

Good day, How can I properly close a select2 dropdown via jquery or javascript??
for now Im using select2-dropdown.toggle() to close it,
but I noticed that It will simply hide the list and the select2 box is still being highlighted
I want to lost focus it or something like that just to close it properly and be able to come up with a result like this one .
by the way the screen shots are dark because those select2 boxes are under a bootstrap modal that would come up whenever I press enter.
Any advice would really be appreciated! Thanks in advance

I know this is an old question but in order to do this using the API you would simply do the following:
Select2 API
$("#select2-drop-mask").select2("close");
The question also mentions bootstraps modal dialog which tends to be a reason why people want to close it programmatically.
For anyone's info this is how you do that:
Bootstrap 3
$('#myModal').on('hidden.bs.modal', function () {
$('#select2-drop-mask').select2("close");
})
Bootstrap 2
$('#myModal').on('hidden', function () {
$('#select2-drop-mask').select2("close");
})

In v4.0, none of the other answers worked for me. Using jQuery to select just the mask had no effect. I had to use the id of the select box itself:
$("#mySelectElement").select2("close")
This also worked, but may not be preferred:
$("#mySelectElement").select2().trigger("select2:close");
Documentation
Also, for Bootstrap 3, the hidden.bs.modal event was too late and the select2 mask would linger for a second during the animation. The hide.bs.modal worked a little smoother for us:
$('#modalYourModal').on('hide.bs.modal', function () {
//close select2 in case its open
$("#mySelectElement").select2("close");
});

this one works for me $("#select2-drop-mask").click();

The select2-dropdown-*mask* didn't work for me, but the below did.
$('#select2-drop').select2('close');

To close all in Bootstrap version 4 and above. Try:
$('body').trigger('mousedown');

All select2 elements has class select2-hidden-accessible. So we can use this class in selector and close all of them
$('.select2.select2-hidden-accessible').select2('close');
or try to close only one of them with id selector.

select2-dropdown.blur();
I think this is what you're looking for.
Here you have an example in JSFiddle created by me just now.

How can I prevent the dropdown from opening in a DropDownList?

I have a custom table which I'd like to use as the DropDown portion as a DropDownList.
Ideally, when users click on a DropDownList, it should show the custom table instead of the usual drop down. I thought it'd be easy to prevent the dropdown from opening without disabling the DropDownList control, however that doesn't appear to be the case.
Is there an easy way to prevent a DropDownList from opening without disabling it?
Edit: This has to work for an embedded IE 7 web browser, and e.preventDefault() does not work in that browser version

You can do something like this:
Basically, I have positioned an invisible div over the dropdown to block it, and you can handle the click with the onclick of the masking div.
EDIT: I have updated this http://jsfiddle.net/EdM7B/1/
<div id='mask' onclick='alert("clicked");' style='width:200px; height:20px; position:absolute; background:white;filter:alpha(opacity=0);'></div>
<select id='selectList' show=1 style='width:200px; height:20px;'>
<option>Test</option>
</select>
I had to use a sort of hack because IE doesn't seem to render divs properly that have no background colour set, so it wasn't working correctly. This works in my IE7.
If you want it to work in all browsers you'll need to add chrome/firefox opacity CSS or have some IE only CSS to apply background colour.
I think due to the way it's positioned above, the opacity is actually not working properly because the element is positioned absolutely, either way it seems to work. I originally had it as opacity 1, but that sounds wrong to me as we want it invisible, so I changed it to 0.

It's possible to stop the dropdownlist from showing by using jQuery's event.preventDefault in the mousedown event (demo: http://jsfiddle.net/RCCKj).
Also see this related question: stop chrome to show dropdown list when click a select

Put it inside a div like this:
<div id="dllDiv" style="width:200px;height:200px;">
< asp:DropDownList ID="DropDownList1" runat="server" style="z-index:-1000px;pointer-events:none;">
< /asp:DropDownList>
</div>
You should set the css property pointer-events to none, then you can show your table hidden in a div or loaded it by using ajax, something like this:
(document).ready(function() {
$("#dllDiv").click(function() {
alert('adasd');
});
});

Have you thought about using a mega menu for this, you can put anything you want in the dropped down portion - for example your table

Custom Combobox Dropdown trouble

i am working in html for a custom drop down menu. I want to click the arrow and the list to open the hidden options, but nothing happens when i click the arrow? I do not know what is wrong. http://jsfiddle.net/Hunter4854/rrmJR/1/

The easiest solution might be to just bind the click event on the arrow so that it triggers the click even of the drop down like this:
$('.arrow').click(function() {
$('.custom-select').trigger('click')
});
jsFiddle example.
BTW, any reason why you're using such an old version of jQuery?

I simply put your .arrow div into the custom-select div and it's working. It doesn't really matter where to put your arrow since you position it absolutely) The working example: http://jsfiddle.net/skip405/rrmJR/6/

tab menu + accordion menu assign classes

I have asked question about these two menus before, but the subject was a bit different, for now, all i want is to upgrade the previous code written here: accordion, tab menus, assign select class for both so that the class open_menu doesnt disappear after i click the link in it's sub menu, u can easily understand it from this script: http://jsfiddle.net/bq6tA/11/ in comments i tried to reply the man who wrote this script, but he didn't reply, but i really need to modify this script, right now, and thx for help everyone!
btw, if i refresh the page, the classes are assigned ok, once i click the sub menu link, the class open_menu for top menu link disappear.

Line 86 of tabcontent.js is looping through every item in your list structure and removing all styling classes if they're not the currently selected item:
this.getselectedClassTarget(this.tabs[i]).className=(this.tabs[i].getAttribute("rel")==subcontentid)? "selected" : ""
Add an additional click binder to reapply it for each lowest level item:
$("ul.reset a").click(function() {
$(this).closest("ul").siblings("a").addClass("open_menu");
});
See a working demo here.

Can you simply remove the .removeClass('open_menu') from the code?