Develop Reference

Vue JS computed property and jquery

I want to turn an element invisible when a (bootstrap) tab is active.
So, the way I'm trying to do it is creating a computed property that returns if the tab is active using jquery this way:
computed: {
IsAbainteracoesAtiva: function () {
return ($('div.active')[1].id == "interacoes")
}
}
But this computed property always returns false, even if it's true. My guess is that Vue is not updating it.
Any sugestions? I'm opened to other solutions too.

I assume the bootstrap tap is active with a click, otherwise correct me, and I'll come back with another answer.
// Simulate tab
<tab #click="toggleTabState"></tab>
// Simulate bootstrap element to show
<div v-if="tabIsOpen"></div>
export default {
data() {
return {
tabIsOpen: false
}
},
methods: {
toggleTabState() {
this.tabIsOpen = !this.tabIsOpen
}
}
}
Gonna need some of your HTML to see what else is going on. Are you iterating through a lot of elements with a v-for?

Prevent close Toastr on Click

I´m trying to keep toastr open alway but it´s dissapear when I click on it, I set extendedTimeOut = 0 , however the toastr dissapear when click on it, so I need a way it never closes even when I make click on it

I found a toastr option to do it
toastr.options.tapToDismiss = false
Example: https://jsfiddle.net/w96udv4e/5/

try to add
event.stopPropogation()
upd code link
UPD:
in sources it triggers
return $toastElement[options.hideMethod](...);
so you need to set this options to jquery function that will work on $toastElement, that makes nothing, something like an 'end' function, but you can make a noop function over all jquery elements and make hideMethod equals 'noop':
$.fn.noop = function(){return this;};
toastr.options.hideMethod = 'noop';
fiddle link

Only thing that worked for me was setting "tapToDismiss"= false and updating the toastr script:
toastr.options.tapToDismiss = false
Line 273 in toastr.js:
if (options.onclick) {
$toastElement.click(function () {
options.onclick();
if (options.tapToDismiss) hideToast(); // Line that hides toast.
});
}

How to check whether a twitter bootstrap popover is visible or not?

I have an element $('#anElement') with a potential popover attached, like
<div id="anElement" data-original-title="my title" data-trigger="manual" data-content="my content" rel="popover"></div>
I just would like to know how to check whether the popover is visible or not: how this can be accomplished with jQuery?

If this functionality is not built into the framework you are using (it's no longer twitter bootstrap, just bootstrap), then you'll have to inspect the HTML that is generated/modified to create this feature of bootstrap.
Take a look at the popupver documentation. There is a button there that you can use to see it in action. This is a great place to inspect the HTML elements that are at work behind the scene.
Crack open your chrome developers tools or firebug (of firefox) and take a look at what it happening. It looks like there is simply a <div> being inserted after the button -
<div class="popover fade right in" style="... />
All you would have to do is check for the existence of that element. Depending on how your markup is written, you could use something like this -
if ($("#popoverTrigger").next('div.popover:visible').length){
// popover is visible
}
#popoverTrigger is the element that triggered that popover to appear in the first place and as we noticed above, bootstrap simply appends the popover div after the element.

There is no method implemented explicitly in the boostrap popover plugin so you need to find a way around that. Here's a hack that will return true or false wheter the plugin is visible or not.
var isVisible = $('#anElement').data('bs.popover').tip().hasClass('in');
console.log(isVisible); // true or false
It accesses the data stored by the popover plugin which is in fact a Popover object, calls the object's tip() method which is responsible for fetching the tip element, and then checks if the element returned has the class in, which is indicative that the popover attached to that element is visible.
You should also check if there is a popover attached to make sure you can call the tip() method:
if ($('#anElement').data('bs.popover') instanceof Popover) {
// do your popover visibility check here
}

In the current version of Bootstrap, you can check whether your element has aria-describedby set. The value of the attribute is the id of the actual popover.
So for instance, if you want to change the content of the visible popover, you can do:
var popoverId = $('#myElement').attr('aria-describedby');
$('#myElement').next(popoverid, '.popover-content').html('my new content');

This checks if the given div is visible.
if ($('#div:visible').length > 0)
or
if ($('#div').is(':visible'))

Perhaps the most reliable option would be listening to shown/hidden events, as demonstrated below. This would eliminate the necessity of digging deep into the DOM that could be error prone.
var isMyPopoverVisible = false;//assuming popovers are hidden by default
$("#myPopoverElement").on('shown.bs.popover',function(){
isMyPopoverVisible = true;
});
$("#myPopoverElement").on('hidden.bs.popover',function(){
isMyPopoverVisible = false;
});
These events seem to be triggered even if you hide/show/toggle the popover programmatically, without user interaction.
P. S. tested with BS3.

Here is simple jQuery plugin to manage this. I've added few commented options to present different approaches of accessing objects and left uncommented that of my favor.
For current Bootstrap 4.0.0 you can take bundle with Popover.js: https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0/js/bootstrap.bundle.min.js
// jQuery plugins
(function($)
{
// Fired immiedately
$.fn.isPopover = function (options)
{
// Is popover?
// jQuery
//var result = $(this).hasAttr("data-toggle");
// Popover API
var result = !!$(this).data('bs.popover');
if (!options) return result;
var $tip = this.popoverTip();
if (result) switch (options)
{
case 'shown' :
result = $tip.is(':visible');
break;
default:
result = false;
}
return result;
};
$.fn.popoverTip = function ()
{
// jQuery
var tipId = '#' + this.attr('aria-describedby');
return $(tipId);
// Popover API by id
//var tipId = this.data('bs.popover').tip.id;
//return $(tipId);
// Popover API by object
//var tip = this.data('bs.popover').tip; // DOM element
//return $(tip);
};
// Load indicator
$.fn.loadIndicator = function (action)
{
var indicatorClass = 'loading';
// Take parent if no container has been defined
var $container = this.closest('.loading-container') || this.parent();
switch (action)
{
case 'show' :
$container.append($('<div>').addClass(indicatorClass));
break;
case 'hide' :
$container.find('.' + indicatorClass).remove();
break;
}
};
})(jQuery);
// Usage
// Assuming 'this' points to popover object (e.g. an anchor or a button)
// Check if popover tip is visible
var isVisible = $(this).isPopover('shown');
// Hide all popovers except this
if (!isVisible) $('[data-toggle="popover"]').not(this).popover('hide');
// Show load indicator inside tip on 'shown' event while loading an iframe content
$(this).on('shown.bs.popover', function ()
{
$(this).popoverTip().find('iframe').loadIndicator('show');
});

Here a way to check the state with Vanilla JS.
document.getElementById("popover-dashboard").nextElementSibling.classList.contains('popover');

This works with BS4:
$(document).on('show.bs.tooltip','#anElement', function() {
$('#anElement').data('isvisible', true);
});
$(document).on('hidden.bs.tooltip','#anElement', function() {
$('#anElement').data('isvisible', false);
});
if ($('#anElement').data('isvisible'))
{
// popover is visible
$('#tipUTAbiertas').tooltip('hide');
$('#tipUTAbiertas').tooltip('show');
}

Bootstrap 5:
const toggler = document.getElementById(togglerId);
const popover = bootstrap.Popover.getInstance(toggler);
const isShowing = popover && popover.tip && popover.tip.classList.contains('show');

Using a popover with boostrap 4, tip() doesn't seem to be a function anymore. This is one way to check if a popover is enabled, basically if it has been clicked and is active:
if ($('#element').data('bs.popover')._activeTrigger.click == true){
...do something
}

Ember Collapsible Container

I'm using Ember.js with handlebars and I need to make a div within my page collapse/expand when clicked. I know how to do this in jQuery, but I can't use any jQuery. Does anyone know how to accomplish this? Also I don't want to just toggle a hide attribute, I need the full sliding up and down feature for collapsing. If anyone has any ideas, I'd really appreciate it.
Thanks

Clicking on your view will cause a click event to be triggered. You can code your animation in any manner you want inside a click event handler in your view:
CollapsableView = Ember.View.extend({
click : function(event) {
this.$().toggle('fast');
}
})

The proper way of doing this in Ember is via the awesome Liquid Fire addon.
The outline:
Install Liquid Fire into your project.
Define a transition like this:
this.transition(
this.hasClass('transition-spoiler'),
this.toValue(true),
this.use('toDown'),
this.reverse('toUp')
);
In your controller/component, create a property spoilerIsVisible and a toggleSpoiler property:
spoilerIsVisible: false,
actions: {
toggleSpoiler: function() {
this.toggleProperty('spoilerIsVisible');
}
}
In your page/component template, create a button and a spoiler wrapper like this:
<button {{action 'toggleSpoiler'}}>
{{if spoilerIsVisible 'Show spoiler' 'Hide spoiler'}}
</button>
{{#liquid-if spoilerIsVisible class="transition-spoiler"}}
<p>Dumbledore dies</p>
{{/liquid-if}}
Note that you can wrap steps 3-4 into an x-spoiler component or something.

I do something similar, but with a tree-structure. I have written a blog post about this previously here: http://haagen-software.no/blog/post/2012-05-05-Ember_tree
It has the features you need in it, in that it adds and removed elements from the DOM when the nodes are clicked on.
A working example can be seen in an app I am currently building here: https://github.com/joachimhs/EurekaJ/tree/netty-ember/EurekaJ.View/src/main/webapp

ExtJS: starting HtmlEditor defaulting to source

I'm using ExtJS 3.2.1 and I need a component almost identical to the bundled HtmlEditor, with one exception: it must start editing the HTML source code directly. The reason I don't use a normal TextArea is that the user should be able to preview the result of his actions before submitting.
I've tried calling toggleSourceEdit(), as per ExtJS documentation, with no success. Debugging, I see that the editor object has the sourceEditMode property set to true, and the Source Edit button seems as if it was "pressed", but clicking on it does not render the typed HTML, and clicking it again goes to the Source Mode.
I've tried calling toggleSourceEdit() after the container show() method, on the container afterLayout listener and on the editor afterRender listener. I've tried also calling it on another button that I added to the container. The result is the same on every try.
The only other option I see is updating ExtJS to 3.3.0, but I haven't seem anything related on the changelogs. Either way, it's going to be my next step. EDIT: The app had another problems when updating, we'll make a bigger effort to update later. As of right now, we are using the HtmlEditor in its original setting.
Thanks!

ran into the same problem (using 3.3.0 by the way)
stumbled upon a fix by dumb luck. i have no idea why this works, but second time is the charm. call it twice in a row to achieve the desired effect..
HTMLEditor.toggleSourceEdit(true);
HTMLEditor.toggleSourceEdit(true);
hope that helps!

Rather calling toggleSourceEdit(), try to setup the configuration while you create HtmlEditor Object

Using toggleSourceEdit() caused some problems for me. One was that this seemed to put the editor somewhere in limbo between source edit and WYSIWYG mode unless I used a timeout of 250ms or so. It also puts the focus in that editor, and I don't want to start the form's focus in the editor, especially since it's below the fold and the browser scrolls to the focused html editor when it opens.
The only thing that worked for me was to extend Ext.form.HtmlEditor and then overwrite toggleSourceEdit, removing the focus command. Then adding a listener for toggling to the source editor when the component is initialized. This is for Ext 4.1 and up. For older versions, replace me.updateLayout() with me.doComponentLayout().
var Namespace = {
SourceEditor: Ext.define('Namespace.SourceEditor', {
extend: 'Ext.form.HtmlEditor',
alias: 'widget.sourceeditor',
initComponent: function() {
this.callParent(arguments);
},
toggleSourceEdit: function (sourceEditMode) {
var me = this,
iframe = me.iframeEl,
textarea = me.textareaEl,
hiddenCls = Ext.baseCSSPrefix + 'hidden',
btn = me.getToolbar().getComponent('sourceedit');
if (!Ext.isBoolean(sourceEditMode)) {
sourceEditMode = !me.sourceEditMode;
}
me.sourceEditMode = sourceEditMode;
if (btn.pressed !== sourceEditMode) {
btn.toggle(sourceEditMode);
}
if (sourceEditMode) {
me.disableItems(true);
me.syncValue();
iframe.addCls(hiddenCls);
textarea.removeCls(hiddenCls);
textarea.dom.removeAttribute('tabindex');
//textarea.focus();
me.inputEl = textarea;
} else {
if (me.initialized) {
me.disableItems(me.readOnly);
}
me.pushValue();
iframe.removeCls(hiddenCls);
textarea.addCls(hiddenCls);
textarea.dom.setAttribute('tabindex', -1);
me.deferFocus();
me.inputEl = iframe;
}
me.fireEvent('editmodechange', me, sourceEditMode);
me.updateLayout();
}
})
}
Then to use it:
Ext.create('Namespace.SourceEditor', {
/*regular options*/
listeners: {
initialize: function(thisEditor) {
thisEditor.toggleSourceEdit();
}
}
});

htmlEditor.toggleSourceEdit(true);
one time should be enough if you do this listening to the afterrender event of the editor.