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Update a part of 'data-content' of popover

I try to find a solution, I would like to update just a part of data-content of popover. Exemple of code:
<div class="popover-wrapper">
<i class="glyphicon glyphicon-question-sign hover_content"
id="popover_help"
data-toggle="popover"
data-placement="right"
data-content="<p>Some static text
<span class='update-text'>Dynamic text to update</span>
</p>"
data-html="true">
</i>
</div>
<button class="update-popover" onClick="updatePopoverContent()">Click to update</button>
<script>
function updatePopoverContent() {
$('.popover-wrapper .hover_content')???;//and something like attr(‘data-content .update-text’, ‘new text’)
}
</script>
to show popover I use:
$(".hover_content").popover({
trigger: "manual",
animation: false,
delay: {
"hide": 30
}
}).on("mouseenter", function() {
var _this = this;
$(this).popover("show");
$(".popover").on("mouseleave", function() {
$(_this).popover('hide');
});
}).on("mouseleave", function() {
var _this = this;
if (!$(".popover:hover").length) {
$(_this).popover("hide");
}
});
Is it possible to change just a part of 'data-content' text? Maybe someone can give some advice? Thank you in advance!

Using bootstrap-4, you can update the attribute data-content.
NB: you cannot update the .data value using jquery's .data("content", newValue) as it appears the popper reads the attribute directly each time instead of honouring the data convention.
$("#popover_help").attr("data-content", replacementHtml);
To update just the update-text part, you can read the HTML, parse it, use jquery to change it, then write it back as HTML:
var html = $("#popover_help").data("content");
var parsed = $("<div/></div>").html(html);
parsed.find("span").text("Updated text");
$("#popover_help").attr("data-content", parsed.html());
You can apply this to a .class to update all if you have more than one, here's an example.
$(function () {
$('[data-toggle="popover"]').popover()
})
function updatePopoverContent() {
$(".hover_content").each(function() {
var html = $(this).data("content");
var parsed = $("<div/></div>").html(html);
parsed.find("span").html("<strong>Updated</strong> text");
$(this).attr("data-content", parsed.html());
// doesn't update if currently shown, so hide then show if desired
$(this).popover("hide");
//$(this).popover("show");
});
}
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<script src="https://cdn.jsdelivr.net/npm/bootstrap#4.0.0/dist/js/bootstrap.bundle.min.js"></script>
<link href="https://cdn.jsdelivr.net/npm/bootstrap#4.0.0/dist/css/bootstrap.min.css" rel="stylesheet">
<br/>
<div class="popover-wrapper">
<i class="glyphicon glyphicon-question-sign hover_content"
id="popover_help"
data-toggle="popover"
data-placement="right"
data-title="Example"
data-content="<p>Some static text
<span class='update-text'>Dynamic text to update</span>
</p>"
data-html="true">
click me
</i>
</div>
<hr/>
<button class="update-popover" onClick="updatePopoverContent()">Click to update</button>

How to check if the element is visible

How do i know if my element is visible or not using javascript. I'm using $('#element').hide();, $('#element').show(); to hidden or shown an element. How can i check if the element is shown? The element is in the modal. I tried to change the element which is not in the modal and it worked, but when i put the element inside the modal it's not working..
I tried using this code but it's not working.
<div class="well me">
<label for="majore">Major Exam</label>
<div class="input-group">
<input type="text" class="form-control majore" id="majore" oninput="total();"/>
<span class="input-group-addon">
<i class="fa fa-percent"></i>
</span>
</div>
</div>
<script>
if ($('.me').is(':visible')) {
mt = m / 100 * 50 + 50;
}
</script>

"none" == document.getElementById("element").style.display //Check for hide
"block" == document.getElementById("element").style.display //Check for show
you can use like also
if ($('#element').css('display') == 'none') {
alert('element is hidden');
}

Checks for display:[none|block], ignores visible:[true|false]
$('#element').is(":visible");

It seems your selector is wrong.
Example of $("[element]").is(":visible") below: (for refrence)
$("#show").on("click", function() {
$("#text").show();
})
$("#hide").on("click", function() {
$("#text").hide();
})
$("#getStatus").on("click", function() {
alert($("#text").is(":visible"));
})
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<div id="text">Hello</div>
<button id="show">Show</button>
<button id="hide">Hide</button>
<button id="getStatus">Get Status</button>

$('.me') is a class selector which will return array of elements where elements have class me.
So you need to target the specific div either by using this or by using index as there can be many elements with same class name.
$('.me').is(':visible') this will check the first element and return result according to first element's visibility.
You can try
$(".me").eq(1).is(':visible') //Here 1 is index of div which can vary
OR
$(this).is(':visible')

Fire button click event when there are multiple classes on an element

How would I fire a button click event when a particular button is pressed (in this case the accept button).
I've tried the following but with little success:
Javascript
$('.notification-expand .Request .active-item > .accept-button').click(function () {
alert("hello");
});
HTML
<div class="notification-expand Request active-item" style="display: block;">
<div class="notification-body"></div>
<br>
<p>
<button type="button" class="btn btn-success accept-button btn-sm">Accept</button>
</p>
<div class="row">
<div class="col-xs-6 expand-col">
<button type="button" class="btn btn-warning barter-button btn-sm">Barter</button>
</div>
<div class="col-xs-6 expand-col">
<button type="button" class="btn btn-danger reject-button btn-sm">Reject</button>
</div>
</div>
</div>
Fiddle here

You have error in your selector , it should look like this:
$('.notification-expand.Request.active-item .accept-button').click(function () {
alert("hello");
});

You need to concatenate all classes without spaces to catch your target button
$('button.accept-button', '.notification-expand.Request.active-item').click(function () {
alert("hello");
});
See the updated snippet
Notice the syntax of ".className1.className2" instead of ".className1 .className2"

should be something like:
$('button.accept-button').click(function(){ ... });
there is really no need to go down the whole list if this is the whole code
----edit----
so when there are more items but only 1 active(i guess) then just target the active-item class:
$('div.active-item button.accept-button').click(function(){ ... });

try
$('.accept-button', $('.notification-expand.active-item')).click(function () {
alert("hello");
});
or
$('.notification-expand.active-item')).find('.accept-button').click(function () {
alert("hello");
});

Just give the button an id and reference back to that.
HTML
<button id="btnSubmitData"> Ok Button </button>
JQuery Code
$('#btnSubmitData').click(function(){ ... });
You can also have multiple button Ids bind to the same event:
$('#btnAccept, #btnReject, #btnWarning').click(function () {
alert("hello");
});
Take a look at the updated Working Fiddle.

Twitter bootstrap collapse: change display of toggle button

I am using Twitter Bootstrap to create collapsible sections of text. The sections are expanded when a + button is pressed. My html code as follows:
<div class="row-fluid summary">
<div class="span11">
<h2>MyHeading</h2>
</div>
<div class="span1">
<button type="button" class="btn btn-success" data-toggle="collapse" data-target="#intro">+</button>
</div>
</div>
<div class="row-fluid summary">
<div id="intro" class="collapse">
Here comes the text...
</div>
</div>
Is there a way to change the button to display - instead of + after the section is expanded (and change back to + when it is collapsed again)?
Additional information: I hoped there would be a simple twitter-bootstrap/css/html-based solution to my problem. All responses so far make use of JavaScript or PHP. Because of this I want to add some more information about my development environment: I want to use this solution inside a SilverStripe-based (version 3.0.5) website which has some implications for the use of both PHP as well as JavaScript.

try this. http://jsfiddle.net/fVpkm/
Html:-
<div class="row-fluid summary">
<div class="span11">
<h2>MyHeading</h2>
</div>
<div class="span1">
<button class="btn btn-success" data-toggle="collapse" data-target="#intro">+</button>
</div>
</div>
<div class="row-fluid summary">
<div id="intro" class="collapse">
Here comes the text...
</div>
</div>
JS:-
$('button').click(function(){ //you can give id or class name here for $('button')
$(this).text(function(i,old){
return old=='+' ? '-' : '+';
});
});
Update With pure Css, pseudo elements
http://jsfiddle.net/r4Bdz/
Supported Browsers
button.btn.collapsed:before
{
content:'+' ;
display:block;
width:15px;
}
button.btn:before
{
content:'-' ;
display:block;
width:15px;
}
Update 2 With pure Javascript
http://jsfiddle.net/WteTy/
function handleClick()
{
this.value = (this.value == '+' ? '-' : '+');
}
document.getElementById('collapsible').onclick=handleClick;

Here's another CSS only solution that works with any HTML layout.
It works with any element you need to switch. Whatever your toggle layout is you just put it inside a couple of elements with the if-collapsed and if-not-collapsed classes inside the toggle element.
The only catch is that you have to make sure you put the desired initial state of the toggle. If it's initially closed, then put a collapsed class on the toggle.
It also requires the :not selector, so it doesn't work on IE8.
HTML example:
<a class="btn btn-primary collapsed" data-toggle="collapse" href="#collapseExample">
<!--You can put any valid html inside these!-->
<span class="if-collapsed">Open</span>
<span class="if-not-collapsed">Close</span>
</a>
<div class="collapse" id="collapseExample">
<div class="well">
...
</div>
</div>
Less version:
[data-toggle="collapse"] {
&.collapsed .if-not-collapsed {
display: none;
}
&:not(.collapsed) .if-collapsed {
display: none;
}
}
CSS version:
[data-toggle="collapse"].collapsed .if-not-collapsed {
display: none;
}
[data-toggle="collapse"]:not(.collapsed) .if-collapsed {
display: none;
}
JS Fiddle

Add some jquery code, you need jquery to do this :
<script>
$(".btn[data-toggle='collapse']").click(function() {
if ($(this).text() == '+') {
$(this).text('-');
} else {
$(this).text('+');
}
});
</script>

All the other solutions posted here cause the toggle to get out of sync if it is double clicked. The following solution uses the events provided by the Bootstrap framework, and the toggle always matches the state of the collapsible element:
HTML:
<div class="row-fluid summary">
<div class="span11">
<h2>MyHeading</h2>
</div>
<div class="span1">
<button id="intro-switch" class="btn btn-success" data-toggle="collapse" data-target="#intro">+</button>
</div>
</div>
<div class="row-fluid summary">
<div id="intro" class="collapse">
Here comes the text...
</div>
</div>
JS:
$('#intro').on('show', function() {
$('#intro-switch').html('-')
})
$('#intro').on('hide', function() {
$('#intro-switch').html('+')
})
That should work for most cases.
However, I also ran into an additional problem when trying to nest one collapsible element and its toggle switch inside another collapsible element. With the above code, when I click the nested toggle to hide the nested collapsible element, the toggle for the parent element also changes. It may be a bug in Bootstrap. I found a solution that seems to work: I added a "collapsed" class to the toggle switches (Bootstrap adds this when the collapsible element is hidden but they don't start out with it), then added that to the jQuery selector for the hide function:
http://jsfiddle.net/fVpkm/87/
HTML:
<div class="row-fluid summary">
<div class="span11">
<h2>MyHeading</h2>
</div>
<div class="span1">
<button id="intro-switch" class="btn btn-success collapsed" data-toggle="collapse" data-target="#intro">+</button>
</div>
</div>
<div class="row-fluid summary">
<div id="intro" class="collapse">
Here comes the text...<br>
<a id="details-switch" class="collapsed" data-toggle="collapse" href="#details">Show details</a>
<div id="details" class="collapse">
More details...
</div>
</div>
</div>
JS:
$('#intro').on('show', function() {
$('#intro-switch').html('-')
})
$('#intro').on('hide', function() {
$('#intro-switch.collapsed').html('+')
})
$('#details').on('show', function() {
$('#details-switch').html('Hide details')
})
$('#details').on('hide', function() {
$('#details-switch.collapsed').html('Show details')
})

I liked the CSS-only solution from PSL, but in my case I needed to include some HTML in the button, and the content CSS property is showing the raw HTML with tags in this case.
In case that could help someone else, I've forked his fiddle to cover my use case: http://jsfiddle.net/brunoalla/99j11h40/2/
HTML:
<div class="row-fluid summary">
<div class="span11">
<h2>MyHeading</h2>
</div>
<div class="span1">
<button class="btn btn-success collapsed" data-toggle="collapse" data-target="#intro">
<span class="show-ctrl">
<i class="fa fa-chevron-down"></i> Expand
</span>
<span class="hide-ctrl">
<i class="fa fa-chevron-up"></i> Collapse
</span>
</button>
</div>
</div>
<div class="row-fluid summary">
<div id="intro" class="collapse">
Here comes the text...
</div>
</div>
CSS:
button.btn .show-ctrl{
display: none;
}
button.btn .hide-ctrl{
display: block;
}
button.btn.collapsed .show-ctrl{
display: block;
}
button.btn.collapsed .hide-ctrl{
display: none;
}

My following JS solution is better than the other approaches here because it ensures that it will always say 'open' when the target is closed, and vice versa.
HTML:
<a href="#collapseExample" class="btn btn-primary" data-toggle="collapse" data-toggle-secondary="Close">
Open
</a>
<div class="collapse" id="collapseExample">
<div class="well">
...
</div>
</div>
JS:
$('[data-toggle-secondary]').each(function() {
var $toggle = $(this);
var originalText = $toggle.text();
var secondaryText = $toggle.data('toggle-secondary');
var $target = $($toggle.attr('href'));
$target.on('show.bs.collapse hide.bs.collapse', function() {
if ($toggle.text() == originalText) {
$toggle.text(secondaryText);
} else {
$toggle.text(originalText);
}
});
});
Examples:
$('[data-toggle-secondary]').each(function() {
var $toggle = $(this);
var originalText = $toggle.text();
var secondaryText = $toggle.data('toggle-secondary');
var $target = $($toggle.attr('href'));
$target.on('show.bs.collapse hide.bs.collapse', function() {
if ($toggle.text() == originalText) {
$toggle.text(secondaryText);
} else {
$toggle.text(originalText);
}
});
});
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<link href="http://netdna.bootstrapcdn.com/twitter-bootstrap/2.3.1/css/bootstrap-combined.min.css" rel="stylesheet"/>
<script src="http://netdna.bootstrapcdn.com/twitter-bootstrap/2.3.1/js/bootstrap.min.js"></script>
<a href="#collapseExample" class="btn btn-primary" data-toggle="collapse" data-toggle-secondary="Close">
Open
</a>
<div class="collapse" id="collapseExample">
<div class="well">
...
</div>
</div>
JS Fiddle
Other benefits of this approach:
the code is DRY and reusable
each collapse button stays separate
you only need to put one change into the HTML: adding the data-toggle-secondary attribute

I guess you could look inside your downloaded code where exactly there is a + sign (but this might not be very easy).
What I'd do?
I'd find the class/id of the DOM elements that contain the + sign (suppose it's ".collapsible", and with Javascript (actually jQuery):
<script>
$(document).ready(function() {
var content=$(".collapsible").html().replace("+", "-");
$(".collapsible").html(content));
});
</script>
edit
Alright... Sorry I haven't looked at the bootstrap code... but I guess it works with something like slideToggle, or slideDown and slideUp... Imagine it's a slideToggle for the elements of class .collapsible, which reveal contents of some .info elements. Then:
$(".collapsible").click(function() {
var content=$(".collapsible").html();
if $(this).next().css("display") === "none") {
$(".collapsible").html(content.replace("+", "-"));
}
else $(".collapsible").html(content.replace("-", "+"));
});
This seems like the opposite thing to do, but since the actual animation runs in parallel, you will check css before animation, and that's why you need to check if it's visible (which will mean it will be hidden once the animation is complete) and then set the corresponding + or -.

Easier with inline coding
<button type="button" ng-click="showmore = (showmore !=null && showmore) ? false : true;" class="btn float-right" data-toggle="collapse" data-target="#moreoptions">
<span class="glyphicon" ng-class="showmore ? 'glyphicon-collapse-up': 'glyphicon-collapse-down'"></span>
{{ showmore !=null && showmore ? "Hide More Options" : "Show More Options" }}
</button>
<div id="moreoptions" class="collapse">Your Panel</div>

Some may take issue with changing the Bootstrap js (and perhaps validly so) but here is a two line approach to achieving this.
In bootstrap.js, look for the Collapse.prototype.show function and modify the this.$trigger call to add the html change as follows:
this.$trigger
.removeClass('collapsed')
.attr('aria-expanded', true)
.html('Collapse')
Likewise in the Collapse.prototype.hide function change it to
this.$trigger
.addClass('collapsed')
.attr('aria-expanded', false)
.html('Expand')
This will toggle the text between "Collapse" when everything is expanded and "Expand" when everything is collapsed.
Two lines. Done.
EDIT: longterm this won't work. bootstrap.js is part of a Nuget package so I don't think it was propogating my change to the server. As mentioned previously, not best practice anyway to edit bootstrap.js, so I implemented PSL's solution which worked great. Nonetheless, my solution will work locally if you need something quick just to try it out.

You do like this.
the function return the old text.
$('button').click(function(){
$(this).text(function(i,old){
return old=='Read More' ? 'Read Less' : 'Read More';
});
});

Applied and working in Bootstrap 5.0.1.
Using simple jQuery
jQuery('button').on( 'click', function(){
if(jQuery(this).hasClass('collapsed')){
jQuery(this).html('+');
} else {
jQuery(this).html('-');
}
});
You can also use font awesome or HTML instead of +/- signs.

Want to make inactive hyperlink

I have problem in hide and show the div element.
In this scenario when user click on the year the respect content is shown.
Problem I want to inactive hyperlinking on respective year when it is opened.
The script and html is below;
for this I have tried .preventDefault(). but not got any success:
<script type="text/javascript" >
$(document).ready(function() {
$("div.new:gt(0)").hide();// to hide all div except for the first one
$("div[name=arrow]:eq(0)").hide();
// $("div.nhide:gt(0)").hide();
// $("a[name=new]").hide();
$("a[name=new]").hide();
$('#content a').click(function(selected) {
var getID = $(this).attr("id");
var value= $(this).html();
if( value == '<< Hide')
{
// $("#" + getID + "arrow").hide();
$("a[name=new]").hide();
$("#" + getID + "_info" ).slideUp('slow');
$("div[name=arrow]").show();
$("div.new").hide();
$(this).hide();
// var getOldId=getID;
// $("#" + getID ).html('<< Hide').hide();
}
if($("a[name=show]"))
{
// $("div.new:eq(0)").slideUp()
$("div.new").hide();
$("div[name=arrow]").show();
$("a[name=new]").hide();
$("#news" + getID + "arrow").hide();
$("#news" + getID + "_info" ).slideDown();
$("#news" + getID ).html('<< Hide').slideDown();
}
});
});
</script>
The html code is below:
<div id="content">
<div class="news_year">
<a href="#" name="show" id="2012">
<div style="float:left;" name="year" id="news2012year">**2012** </div>
<div style="float:left;" name="arrow" id="news2012arrow">>></div>
</a>
</div>
<div class="new" id="news2012_info">
<div class="news">
<div class="news_left">News for 2012</div>
</div>
<div class="nhide" ><< Hide </div>
</div>
<div id="content">
<div class="news_year">
<a href="#" name="show" id="2011">
<div style="float:left;" name="year" id="news2012year">2012 </div>
<div style="float:left;" name="arrow" id="news2012arrow">>></div>
</a>
</div>
<div class="new" id="news2011_info">
<div class="news">
<div class="news_left">News for 2011</div>
</div>
<div class="nhide" ><< Hide </div>
</div>
Fiddle

if i am understanding your problem,
event.preventDefault(); not works with all browser so if you are using other browser like IE
then use event.returnValue = false; instead of that.so you can detect your browser using javascript as
var appname = window.navigator.appName;

This is what I'm currently using in my projects to "disable" an anchor tag
Disabling the anchor:
Remove href attribute
Change the opacity for added effect
<script>
$(document).ready(function(){
$("a").click(function () {
$(this).fadeTo("fast", .5).removeAttr("href");
});
});
</script>
Enabling the anchor:
$(document).ready(function(){
$("a").click(function () {
$(this).fadeIn("fast").attr("href", "http://whatever.com/wherever.html");
});
});
Original code can be found here

Add a class called 'shown' to your wrapper element when expanding your element and remove it when hiding it. Use .hasClass('shown') to ensure the inappropriate conditional is never executed.

Surround the code inside of the click function with an if statement checking to see if a variable is true or false. If it is false, it won't run the code, meaning the link is effectively inactive. Try this..
var isActive = true;
if (isActive) {
// Your code here
}
// The place where you want to de-activate the link
isActive = false;
You could also consider changing the link colour to a grey to signify that it is inactive.
Edit
Just realised that you want to have multiple links being disabled.. the code above will disable all of them. Try the code below (put the if around the code in the click function)
if(!$(this).hasClass("disabled")) {
// Your code here
}
// The place where you want to de-activate the link
$("#linkid").addClass("disabled");
// To re-enable a link
$("#linkid").removeClass("disabled");
// You can even toggle the link from disabled and non-disabled!
$("#linkid").toggleClass("disabled");
Then in your CSS you could have a declaration like this:
.disabled:link {
color:#999;
}