Issues with using Select2 to jump to page anchors - jquery-select2

I have a long page organized by state. I have a Select2 element at the top of the page that I would like to use to let visitors select a state and jump to that state further down the page via an anchor.
I’ll post my code in a bit, but let me first describe the issue. My solution works in most browsers, but I’ve discovered that it fails in IE11 and Edge. In those browsers, I see the desired content location flicker briefly into view before the page gets pulled back to having the Select2 element at the top of the page. It’s like Select2 really wants to be in view.
Here is my (simplified) code:
HTML
<select class="jumpmenu">
<option value="">Jump to a State</option>
<option value="#alabama">Alabama</option>
<option value="#alaska">Alaska</option>
[ ... ]
</select>
<a name="alabama" id="alabama"> </a>
<h2>Alabama</h2>
<a name="alaska" id="alaska"> </a>
<h2>Alaska</h2>
[ ... ]
JQUERY
$(".jumpmenu").select2();
$('.jumpmenu').on('select2:select', function (e) {
window.location.hash = this.options[this.selectedIndex].value;
});
Is there a better way for me to construct this jump menu so that it will jump properly in IE and Edge?

I got a few suggestions from John30013 on the Select2 forums, and one of them worked well for me. I ended up setting a short setTimeout, which allowed the select to close before jumping to the anchor. Here's the code that worked for me:
$('.jumpmenu').on('select2:select', function (e) {
newHash = this.options[this.selectedIndex].value;
setTimeout(function(){ window.location.hash = newHash;},100);
});

Related

Removing selected option in multiple select2 clears all options

Using Laravel livewire, bootstrap 5 modal and select 2.
Select2 (s2) without multiple works fine. It's populated, selections save to the component, clearing is also fine.
When an s2 has multiple attribute, removing a selected option clears all the options and nothing is displayed in the results drop down. When adding a selection, this doesn't happen.
If I do a dispatchBrowserEvent and re-init the s2 it does work again.
My question is why does removing an s2 option require a re-init but an add doesn't.
Seems to be something to do with the rendering in render().
Some code...
Blade:
<div wire:ignore>
<select id="selectedTrades" wire:model.defer="selectedTrades" class="select-2" multiple="multiple" data-field="selectedTrades" data-allow-clear="false">
#foreach ($contractor_trades as $trade)
<option value="{{ $trade['id'] }}">{{ $trade['name'] }}</option>
#endforeach
</div>
Standard stuff. wire.ignore around the s2. The modal has wire:ignore.self.
JS:
$('.select-2').on('change', function (e)
{
var $this = $(this);
livewire.emit('setSelect2Property', $this.attr('data-field'), $this.val());
});
Component:
public function setSelect2Property($property, $value)
{
$this->$property = $value;
}
Just sets $this->selectedTrades to the array sent.
Adding:
The drop down has the options as expected.
Removing:
The thin light line under it is the container for the results that's now empty. The original select element does still have its options.
If I remove the livewire.emit from the js to test, the s2 behaves correctly.
I think it has to do with the components render method. I can't figure out what is happening different when I add versus remove.
I got this to work. The problem was the dropdownParent element I was using. I had it set to the modal. Setting it to the immediate parent element and it worked as expected.

changePage "jumps" back to old page

I've a big problem with a jQuery Mobile Application:
I'm using custom functions (they are triggered by onClick) to switch the page with currentPage.
It only happens on Android-Devices on sites in which has changed (due to ajax requests) with the integrated browser. iOS and Chrome works nice.
After clicking on an element, the animation started but just before it ends, it switches back to the old page. After a half second, it switches back to the new.
I made a movie of the bug here: http://www.youtube.com/watch?v=sXxvVUxniNg
Thank you very much
Code (CoffeeScript):
class Guide
#categoriesLoaded = false
#loadSearch: ->
$.mobile.changePage $("#guide"),
transition: 'slide'
changeHash: false
if !#categoriesLoaded
#categoriesLoaded = true
GuideApi.getCategories (data) ->
output = Mustache.render $("#tmpl-guide-categories-select").html(),
categories: data
$("#guide-search-category").append output
$("#guide-search-category").val($("#guide-search-category option:first").val());
window.WgSwitchGuide = ->
Guide.loadSearch
I was having the same issue. And I tried everything, I finally end with the solution. What I found was the error was principally within the browser. So I set the configuration of the pushStateEnabled as false. I did it by doing the following, adding this script.
<script type="text/javascript">
$(document).bind("mobileinit", function(){
$.mobile.pushStateEnabled = false;
});
</script>
It should be add before the jquery-mobile script is call, for more information you could see it on JQuery description
And it solved the problem no more jumping back.
I was having the exact same issue on both android and ios. For me, it was happening for heavy pages, i.e., pages with complex elements etc. Looks like you are using "slide" transition, which was what I was using as well. Taking out the page transitions (i.e., $.mobile.changePage("page.html", { transition: "none" })) for those pages resolved this issue for me. Hope this helps.
If you want to retain the transition, you can try preloading the page first when the previous page is being shown, by using the $.mobile.loadPage, and then show the transition. I am myself exploring this route, but it is probably worth trying.
Edit: OK - I explored the last suggestion and this doesn't seem to be working. Will stick with the first option.
Would you try to add the event stopPropagation and preventDefault methods on the first page's click event? This way the default action of the click event will not be triggered. Moreover the stopPropagation prevents the event from bubbling up the DOM tree, preventing any parent handlers from being notified of the event.
event.stopPropagation();
event.preventDefault();
Example:
$("p").click(function(event){
event.stopPropagation();
event.preventDefault();
// change page
});
After trying for weeks to find a solution to this, I ended up doctoring the JQM library to disable page transitions one right after another. It's not a good solution, but it's the only thing I could get to work.
I was getting pages jumping back on both $.mobile.changePage and on anchor links. I used the slide transition, but removing it did not fix the problem. Setting pushStateEnabled to false did not work either. The jumps were happening on all devices and browsers (that I tested, anyway).
So here's what I did to the JQM library (v1.3.2).
Before the $.mobile.changePage function is defined, I added:
var justChangedPage = false;
Then within the function there's a line that goes:
if ( pbcEvent.isDefaultPrevented()) {
return;
}
which I changed to:
if ( pbcEvent.isDefaultPrevented() || justChangedPage) {
return;
}
Then right after this part of the $.mobile.changePage function:
if ( toPage[ 0 ] === $.mobile.firstPage[ 0 ] && !settings.dataUrl ) {
settings.dataUrl = documentUrl.hrefNoHash;
}
I added:
justChangedPage = true;
setTimeout(function() {
justChangedPage = false;
}, 500);
(Putting that earlier in the function didn't work -- all that stuff executes more than once within a single page transition. And half a second seemed to be the minimum timeout that prevented the page jumps.)
I hope this helps someone even if it is a hack...
What is your JQM and Android version?
I'm not sure If I understand correctly. I think transition flicker maybe come from the following assumption.
Heavy page DOM transition.
Using "translate3d" somewhere in css file.
Not using "H/W Acceleration" feature. Enable by add this line to your AndroidManifest.xml in <application>
android:hardwareAccelerated="true"
I encountered exactly the same behaviour and it seems that few people are having the same issue. At first I thought it is caused by jQuery mobile library. Later on, I manage to find where the problem came from and it is a bug in my own code.
I made a demo to explain the issue.
http://jsfiddle.net/pengyanb/6zvpgd4p/10/
Hopefully, this can be hint for people having the same problem.
$(document).on('pagebeforeshow', '#page2', function(){
console.log('Page2 before show');
var htmlGeneratedOnTheFly = '<ul data-role="listview" data-inset="true">';
for(var i=0; i<4; i++)
{
htmlGeneratedOnTheFly += '<li><a>Random html element</a></li><li data-role="list-divider"></li>';
}
htmlGeneratedOnTheFly += '</div>';
$('#page2UiContent').empty();
$('#page2UiContent').append(htmlGeneratedOnTheFly);
$('#page2UiContent').trigger('create');
//////////////////////////////////////////////////
//The following section is where the bug is generated.
//Each on "page2 before show event" will add a OK Button click handler.
//The handlers never get cleared.
//More and more handler is added to the Page2 OK button as pages going back and forth.
//Open the browser's console window to see multiple "Page 2 OK Button clicked!!!" lines on one button click.
//To fix the bug, move the following section out of the $(document).on('pagebeforeshow', '#page2', function(){});
//////////////////////////////////////////////////
$('#page2OkButton').click(function(){
console.log("Page 2 OK Button clicked!!!");
$.mobile.changePage('#page1', {transition:"flip"});
});
//////////////////////////////////////////////
//////////////////////////////////////////////
});
<link href="http://code.jquery.com/mobile/1.4.5/jquery.mobile-1.4.5.css" rel="stylesheet"/>
<script src="http://code.jquery.com/mobile/1.4.5/jquery.mobile-1.4.5.js"></script>
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<div data-role="page" id="page1" data-theme="a">
<div data-role="header" data-position="fixed">
<h5>Demo Page 1</h5>
</div>
<div data-role="main" class="ui-content">
<h2>jQuery mobile changepage jumps back to old page demo</h2>
<p>Click "Go To Page 2" button to go to page2</p>
<p>On Page2 click Ok Button to come back to page1</p>
<p>Keeping going back forth between two pages for few times.</p>
<p>Eventually, you will find that clicked on "Go To Page2" button to flip to Page2 but it soon jumps back to page1 automatically. </p>
<h2>Please read the comments in the javascript for explaination</h2>
Go To Page 2
</div>
</div>
<div data-role="page" id="page2" data-theme="a">
<div data-role="header" data-position="fixed">
<h5>Demo Page 2</h5>
</div>
<div id="page2UiContent" data-role="main" class="ui-content">
</div>
<div data-role="footer" data-position="fixed" style="text-align:center;">
<div data-role="navbar">
<ul>
<li><a id="page2OkButton" class="ui-btn ui-icon-check ui-btn-icon-left">OK</a></li>
</ul>
</div>
</div>
</div>

Combining jQuery UI Tabs and jScrollPane fails

I have problem getting newer version of jscrollpane to work with jQuery UI tabs.
I get only one tab (first one) working, but no others; i tried fix explained here with previous version, placing additional <div> controlled by tabs (and inside are divs controlled by jScrollPane) , as described here, but still with no luck. Has anyone experienced simmilar issues ? Thanks for clues!
I came to solution at last more/less on my own, of course with help by looking at this explanation given by jscrollpane author himself about this issue, but for previous version of jscrollpane.
As this did not work out of the box, and i still had problems implementing the solution, i added a click listener to tabs links, and when clicked, added jscrollpane to content div, like this
jQuery("#tabs ul li a").click(function () {
clickednum = "#tabs-" + jQuery(this).parent().attr("id");
jQuery(clickednum + " .skroler").jScrollPane();
});
what i am doing here, is to wait for user to click on some tab link, and then add jScrollPane to tab content that coresponds to clicked tab link.
.skroler is an extra-div where is tab content, because it is described by script author that it must be done this way in order to work)
I am reckognizing tabs by li id attribute (which i was in need to generate from PHP. for other reasons)
This is specific implementation - from working example, probably it could be done simpler in other environment.
Ah, and of course, at the start of the story, you need to initialize jScrollPane to first opened tab like
jQuery("#tabs-1 .skroler").jScrollPane();
I have the same problem and solved it by adding ids to the li tags that correspond to the generated tabs:
<ul>
<li id="details">Details</li>
<li id="history">History</li>
<li id="examinations">Examinations</li>
<li id="diagnosis">Diagnosis</li>
</ul>
Then, for example:
$('#diagnosis').click(function() {
$('.diagnosis').jScrollPane();
});
Just ran into the same issue
$( "#tabs" ).tabs({
//for the initially loaded tab
create: function( event, ui ) {
$(ui.panel).jScrollPane();
},
//for the tabs opened later
activate: function( event, ui ) {
$(ui.newPanel).jScrollPane();
},
});
More info here http://api.jqueryui.com/tabs/

Jquery Mobile Select does not reset

I am writing a web shop with Jquery Mobile where I want to use a select menu to browse the categories available. When the user selects a category I want to navigate to the same page but with a couple of parameters added to the url. This is my markup for the select:
<asp:Repeater id="productCatSelect" runat="server">
<HeaderTemplate>
<select id="productCatSelectMenu" data-native-menu="false" onchange="categoryClick();" class="button" data-theme="a">
<option data-placeholder="true">All Categories</option>
</HeaderTemplate>
<ItemTemplate>
<option value="<%# Eval("NodeID") %>" ><%# Eval("Description")%></option>
</ItemTemplate>
<FooterTemplate>
</select>
</FooterTemplate>
</asp:Repeater>
And here is the javascript:
function categoryClick() {
var mySelect = $("#productCatSelectMenu");
if (mySelect.val() != '') {
if (mySelect.val() == 0) {
$.mobile.changePage("shop.aspx", {reloadPage: true, transition:"slide"});
} else {
$.mobile.changePage("shop.aspx?c=" + $("#productCatSelectMenu").val() + "&n=" + $('#productCatSelectMenu :selected').text(), {reloadPage: true, transition:"slide"});
}
}
}
My problem occurs when I have navigated once and try to choose another option from the select, my javascript still retreives the previous value; the select does not seem to reset! However, when I press F5 and reload the page manually the menu works again, until I have used it once of course.
Anyone have any ideas on how I can fix this? As you can see in the javascript the "reloadPage: true" attribute does not fix the problem.
If you're using jQuery Mobile's custom select field, try
$("#select_id").selectmenu('refresh', true)
This will successfully reset the select options rendered by jQuery mobile.
You're going to need to reset this yourself, maybe try:
$('select#productCatSelectMenu option').attr('selected', false);
or
$('select#productCatSelectMenu option').removeAttr('selected');
or
$('select#productCatSelectMenu').children('option').removeAttr('selected').filter(':nth-child(1)').attr('selected', true);
or
$('select#productCatSelectMenu').attr('selectedIndex', -1);
I had a similar problem the other day
Reset/Un-select Select Option
I have no clue why Jquery mobile select is working the way it is. None of the above worked for me except for what is mentioned here. I am using the current versions
jquery-1.10.2.min.js
jquery.mobile-1.4.2.min.js
https://forum.jquery.com/topic/resetting-select-menu
var myselect = $("select#useOfColor");
myselect[0].selectedIndex = 0;
myselect.selectmenu("refresh");
Have you tried $('#productCatSelectMenu').selectmenu('refresh');?
You can check information about the refresh method in the documentation

How do you remove a button's active state with jQuery Mobile?

In my mobile app, using jQuery Mobile...
I would like to make a simple button execute a simple javascript function on click. No page transitions, nothing special like that.
I understood I can eliminate the page transitions by doing return false or preventDefault()
But the problem is the button sticks with the "active" state, i.e. highlighted blue if you use the general theme. I'm wondering how I can remove that after click (or tap, etc).
Thanks.
You can disable the 'highlighted blue'-state in the 'mobileinit'-event before loading jQueryMobile-script:
<head>
<script>
$(document).bind('mobileinit', function () {
$.mobile.activeBtnClass = 'unused';
});
</script>
<script src="http://code.jquery.com/mobile/1.1.0/jquery.mobile-1.1.0.min.js"></script>
</head>
Now, when you click on a link, no class will be added after the click is performed. You will still have the 'hoover' and 'down' classes.
Update:
This question and the hacks suggested are now a bit outdated. jQuery mobile handles buttons quite a bit differently than 3 years ago and also, jQuery mobile now has several different definitions of "button". If you want to do what the OP was looking for, you might now be able to avoid the issue by using this:
Step 1:
<button class="ui-btn myButton">Button</button>
Alternatively, you could also use jQuery mobile input buttons:
<form>
<input value="Button One" type="button" class="myButton">
<input value="Button Two" type="button" class="myButton2">
</form>
Step 2:
Then your standard jquery on callback:
$(".myButton").on("tap", function(e) {
// do your thing
});
If you are using a button or a tab, or whatever, that has the "active" class applied to it (the default is ui-btn-active), the old answer may still be useful to someone. Also, here is a fiddle demonstrating the code below.
Selectively removing active state:
As demonstrated in another answer, you can disable the active state for all buttons on all pages. If that is acceptable for the project in question, that is the appropriate (and simpler) solution. However, if you want to disable the active state for some buttons while preserving active states for others, you can use this method.
Step 1:
$(document).bind('mobileinit', function() {
$(document).on('tap', function(e) {
$('.activeOnce').removeClass($.mobile.activeBtnClass);
});
});
Step 2:
Then add the activeOnce class (or whatever you want to call it - it's a custom class) to the buttons that you don't want to highlight when clicking.
And as is usual when binding anything to mobileinit, be sure you place your bindings - and perhaps better, all your javascript code - below the jQuery script and above the jQuery-mobile script.
<script src="js/jquery.js"></script>
<script src="js/my_script.js"></script>
<script src="js/jquery.mobile.js"></script>
Do NOT set the activeBtnClass to '' as suggested, this will cause errors when closing dialogs and the pageLoading function.
The method described does work, but cannot be set to null, the activeBtnClass variable is used as a selector, so set it to a non-existent class to get the same effect without the error.
<head>
<script type="text/javascript" src="http://code.jquery.com/jquery-1.7.1.min.js"></script>
<script type="text/javascript">
$(document).bind('mobileinit', function () {
$.mobile.activeBtnClass = 'aBtnSelector';
});
</script>
<script type="text/javascript" src="http://code.jquery.com/mobile/1.1.0/jquery.mobile-1.1.0.min.js"></script>
</head>
This works well to remove the highlight from the buttons while keeping the active state on other elements.
you can just do it via css instead of java:
eg: (you get the idea)
#cart #item_options .ui-btn-active, #cart #item_options .ui-btn-hover-d, #cart #item_options .ui-btn-up-d, #cart #item_options .ui-link-inherit{
background:inherit;
color:inherit;
text-shadow:inherit;
}
What I do is force the buttons to revert to inactive state before a page changes.
//force menu buttons to revert to inactive state
$( '.menu-btn' ).on('touchend', function() {
$(this).removeClass("ui-btn-active");
});
If you want to support non touch devices you should add timeout.
$('.btn' ).on('touchend click', function() {
var self = this;
setTimeout(function() {
$(self).removeClass("ui-btn-active");
},
0);
});
I have spent the good part of a day and night finding the answer to this problem mainly occurring on an android running phonegap. Instead of the standard JQM buttons I am using custom images with :active state in CSS. After following the link to the next page, then clicking back, the button would just stay in the :active state. I have tried adding classes and removing classes and various other suggestions and nothing has worked.
So I came up with my own little fix which works a treat and may help anyone else that is sitting here stumped. I simply call this snippet of code on 'pagecontainerchange' using data.toPage[0].id to only call it on the page where the active state stuck is occurring. Just make sure to wrap your buttons in a div, in my case called "themenu".
function ResetMenu() {
var menuHtml = $("#themenu").html();
$("#themenu").empty().html(menuHtml).trigger("create");
}
This works for a button in the JqueryMobile headerTab
<style>
.Foo {
color: #FFF !important;
background: #347b68 !important;
}
</style>
<div id="headerTab" data-id="headerTab" data-role="navbar">
<ul id="header_tabs">
<li>name
</li>
</ul>
</div>

Resources