Develop Reference

Pass text to panel with toggle

When I click the link of the panel, I would like to have text passed to the panel body. I have placed the onClick in each of the panel tags including the tag. The onClick calls myFunction, which is supposed to send text to the body of the panel. That is not happening. Any suggestions?
function myFunction() {
document.getElementId("panel-body").innerHTML = "it worked"
};
<div class="panel-group">
<div class="panel panel-default">
<div class="panel-heading">
<h4 class="panel-title">
<a data-toggle="collapse" href="#collapse1" onClick="myFunction">Name</a>
</h4>
</div>
<div id="collapse1" class="panel-collapse collapse">
<div class="panel-body"></div>
</div>
</div>
</div>

You have to call the function with (): onClick="myFunction()"
The selector you tried to use would be .getElementById(), but in this case you want a more specific element. So the the css-selector would be #collapse1 > .panel-body which selects the elements with class panel-body which are direct children of #collapse1.
querySelector() selects the first element which fulfills the given css selector, querySelectorAll() would return all of them in an array-like structor NodeList.
function myFunction() {
document.querySelector("#collapse1 > .panel-body").innerHTML = "it worked"
};
<div class="panel-group">
<div class="panel panel-default">
<div class="panel-heading">
<h4 class="panel-title">
<a data-toggle="collapse" href="#collapse1" onClick="myFunction()">Name</a>
</h4>
</div>
<div id="collapse1" class="panel-collapse collapse">
<div class="panel-body"></div>
</div>
</div>
</div>

Programmatically open/close Bootstrap accordion [duplicate]

I have a problem with bootstrap 3 collapse, after opening a panel programmatically it is possible to keep another panel open while reopening the first panel.
My HTML:
<button type="button" class="btn showpanel">Show panel 3</button>
<button type="button" class="btn hidepanel">Hide panel 3</button>
<button type="button" class="btn openpanel">Open panel 3</button>
<button type="button" class="btn closepanel">Close panel 3</button>
<hr/>
<div class="panel-group" id="accordion">
<div class="panel panel-default">
<div class="panel-heading">
<h4 class="panel-title">
<a class="accordion-toggle" data-toggle="collapse" data-parent="#accordion" href="#panel1">Panel 1</a>
</h4>
</div>
<div id="panel1" class="panel-collapse collapse">
<div class="panel-body">
Contents panel 1
</div>
</div>
</div>
<div class="panel panel-default">
<div class="panel-heading">
<h4 class="panel-title">
<a class="accordion-toggle" data-toggle="collapse" data-parent="#accordion" href="#panel2">Panel 2</a>
</h4>
</div>
<div id="panel2" class="panel-collapse collapse">
<div class="panel-body">
Contents panel 2
</div>
</div>
</div>
<div class="panel panel-default">
<div class="panel-heading">
<h4 class="panel-title">
<a class="accordion-toggle" data-toggle="collapse" data-parent="#accordion" href="#panel3">Panel 3</a>
</h4>
</div>
<div id="panel3" class="panel-collapse collapse">
<div class="panel-body">
Contents panel 3
</div>
</div>
</div>
</div>
And some JavaScript:
$(".hidepanel").on("click", function() {
$("#panel3").parent().hide();
});
$(".showpanel").on("click", function() {
$("#panel3").parent().show();
});
$(".openpanel").on("click", function() {
$("#panel3").collapse('show');
});
$(".closepanel").on("click", function() {
$("#panel3").collapse('hide');
});
My jsfiddle that demonstrates this issue
To reproduce:
Click the button 'Open panel 3'.
Click 'Panel 2' to open it. So far no problems.
Click 'Panel 3' to open it again. Panel 2 remains open!
So opening a panel programmatically seems to mess up bootstraps internal registration about panel states? I don't see anything visibly wrong with the 'state change' of the third panel (it's class changes from 'collapse' to 'in' and back as you would expect).

You can create a handler for the collapse show event which occurs just before any panels are displayed.
Add this to ensure any other open panels are closed before the selected one is shown:
$('#accordion').on('show.bs.collapse', function () {
$('#accordion .in').collapse('hide');
});
Bootply demo
You can read more about the collapse events here: http://getbootstrap.com/javascript/#collapse

I think the problem is due to the way you are changing the open panel. Rather than using the 'show' feature you need to fire the click event on the appropriate panel link. For example with an accordion with an id "accordion", with three panels, if you want to show the 2 panel then use:
$("a[href=#accordion-2]").click()
Or whatever ID you have given your second panel (I use twitterboostrapmvc so the panel ids are auto-generated from the accordion ID).

For anyone using data-target attributes to control the accordion (rather than the href attribute), this is an adaptation of ProfNimrod's answer which will click the relevant element if the target is currently hidden. (Note that the if check relies on setting up the accordion with the collapsed class applied by default, which I find useful anyway to take advantage of using css to put a chevron icon on the accordions).
var expandAccordion = function() {
var header = $('[data-target="#accordion-0"]');
if (header.hasClass('collapsed')) {
header.click();
}
}

Change panel width when collapse in Bootstrap

I'm trying to change the collapse behavior in bootstrap, but without success.
I want to create a page with small panels (maybe col-md-4 that I named tabs) that changes the width after click, when the panel collapse.
Here is a example first page:
Here is the same page after click in the "tabs":
My current code, can't hide the <div>something here</div> and change the panel's width.
Below is the code for one panel with simple collapse effect.
<section class="col-md-4">
<h3 class="page-header title">Forms</h3>
<div class="panel-group">
<div id="panel-form-1" class="panel panel-default">
<div class="panel-heading">
<h4 class="panel-title">
<span class="glyphicon glyphicon-chevron-right"></span><a data-toggle="collapse" href="#panel1"> Panel #1</a>
</h4>
</div>
<div id="panel1" class="panel-collapse collapse">
<div class="panel-body">
<form role="form" id="form1">
<div class="row">
<div class="col-md-6">
<div>Stuff</div>
</div>
</div>
</form>
</div>
<div class="panel-footer">
<span class="glyphicon glyphicon-question-sign"></span>
</div>
</div>
</div>
<!-- Other panels-->
</div>
</section>
<div class="col-md-8 something">Something here</div>
JS (not working. No console errors):
<script type="text/javascript" src="../bootstrap/js/bootstrap.min.js"></script>
<script type="text/javascript">
$('.collapse').on('show.bs.collapse', function (e) {
$(this).parent("section").removeClass("col-md-4").addClass("col-md-12");
$(document).find("div.something").hide();
});
</script>
My result page with opened panels is something like (please ignore the glyphicon problems):
I tried to follow the example in this another question here in SO, but I didn't understand it very well.
Is it possible achieve it using bootstrap?
Misc:
Bootstrap 3.3.7
JQuery 3.1.1
Chrome and Firefox

Bootstrap collapse panel keeping a div open after a submit

I have an accordion div (panel-collapse), at the end of the panel I have a submit button, initially, all the panel div are closed, I want to keep the state of the div the same after the submit reload.
<div class="panel-group">
<div class="panel panel-default">
<div class="panel-heading">
<h4 class="panel-title">
<a data-toggle="collapse" href="#collapse1">Collapsible panel</a>
</h4>
</div>
<div id="collapse1" class="panel-collapse collapse">
<div class="panel-body">Panel Body</div>
<div class="panel-footer">Panel Footer</div>
</div>
</div>
<div class="panel panel-default">
<div class="panel-heading">
<h4 class="panel-title">
<a data-toggle="collapse" href="#collapse2">Collapsible panel</a>
</h4>
</div>
<div id="collapse2" class="panel-collapse collapse">
<div class="panel-body">Panel Body</div>
<div class="panel-footer">Panel Footer</div>
</div>
</div>
</div>

On a regular form submit the page gets reloaded and resets everything, but if you submit the form Asynchronously using ajax nothing will change on your page. Using php + jQuery, you could do something like this:
$(document).on("click","#submitButton",function(e) {
e.preventDefault();
var formData = $("#formID").serialize();
$.post("your_php_file.php",formData,function(response) {
console.log(response);
});
});

Only way to preserve setting without async requests is using cookies.
You can set them via Javascript:
(http://www.w3schools.com/js/js_cookies.asp)
Probably like assigning an array of active collapse panels
var active_panels=[0,1,2];
$.cookie('active_panels', JSON.stringify(active_panels))
Without jQuery see W3C specification

Bootstrap Collapse doesn't toggle after you show, hide or toggle from code

My HTML is:
<div id="accordion-container">
<div class="accordion" id="navaccordion">
<div class="accordion-group">
<div class="accordion-heading">
<a class="accordion-toggle" data-toggle="collapse" data-parent="#navaccordion" href="#collapseMenu">
<strong>My Menus</strong>
</a>
</div>
<div id="collapseMenu" class="accordion-body collapse in">
<div class="accordion-inner">
<div class="navigation" id="navigationcontainer">
<span id="menutree">
MenuTree
</span>
</div>
</div>
</div>
</div>
<div class="accordion-group">
<div class="accordion-heading">
<a class="accordion-toggle" data-toggle="collapse" data-parent="#navaccordion" href="#collapseQuickLinks">
<strong>Quick Links</strong>
</a>
</div>
<div id="collapseQuickLinks" class="accordion-body collapse">
<div class="accordion-inner">
<div class="quicklinks" id="quicklinkscontainer">
<span id="quicklinkslist">
QuickLinks
</span>
</div>
</div>
</div>
</div>
<div class="accordion-group">
<div class="accordion-heading">
<a class="accordion-toggle" data-toggle="collapse" data-parent="#navaccordion" href="#collapseQueue">
<strong>Queue</strong>
</a>
</div>
<div id="collapseQueue" class="accordion-body collapse">
<div class="accordion-inner">
<div class="queue" id="queuecontainer">
<span id="queuetree">
Queue
</span>
</div>
</div>
</div>
</div>
</div>
</div>
My example is here: http://jsfiddle.net/pdavis68/Xut4C/2/
If you remove the JavaScript code, you'll notice that the toggling of the collapse operates properly. If you click "Quick Links", "My Menus" closes and "Quick Links" opens.
If you leave the JS in, you'll notice that opening "My Menus" or "Quick Links" doesn't cause anything else to collapse, but if you open "Queue", it will still cause the others to collapse.
It doesn't seem to matter if I use "toggle", "show" or "hide" command in the collapse, it will break the toggling functionality.
Also, in the example, what ought to happen (by my reckoning, at least) is that that "My Menus" should toggle closed (which it does) and then "Quick Links" ought to toggle open (which it does NOT do.)
So, 2 questions:
How do I programmatically show/hide groups without breaking the toggle functionality?
How do I toggle things open?

1.Try to use collapse() with options, the 'parent' is important
$("#collapseMenu").collapse({"toggle": true, 'parent': '#navaccordion'});
$("#collapseQuickLinks").collapse({"toggle": true, 'parent': '#navaccordion' });
Fiddle: http://jsfiddle.net/hieuh25/Xut4C/6/
2.Basically you have 2 ways:
Add class in to that div, e.g: <div id="collapseMenu" class="accordion-body collapse in"> cause that div to open.
Use collapse() with option 'toggle': true as above, when the div is closed.
Hope it helps.

Try activating your content as a collapsible element first. I skimmed over this part when reading the documentation and it really stumped me.
$('#myCollapsible').collapse({
toggle: false
})
After you activate it you can hide and show it as usual.
$('#myCollapsible').collapse('hide');
$('#myCollapsible').collapse('show');
http://getbootstrap.com/javascript/#collapse-methods

You also can add data-parent="#navaccordion" to <div id="collapseMenu" class="accordion-body collapse" data-parent="#navaccordion"> and call without addional key 'parent' like .collapse({"toggle": true});