JQuery UI "drop" event does not fire? - jquery-ui

I have a drag and drop interface with JQueryUI, and when a user drags an element into one of its containers and drops it, I want to display some information about the selected item.
$(document).ready(function()
{
$( ".element" ).draggable({snap: ".elementContainer"});
$( ".elementContainer" ).droppable({
drop:function(){
$("table").append('<tr><td class="elementContainer ui-droppable"></td></tr>');
}});
});
So it's creating a new element with the UI droppable class. My question is, why won't it fire a "drop" event on the newly created element?

It won't fire because when you run $(".elementContainer").droppable(...) it binds the droppable widgets to the .elementContainer elements that exist at that time, s you'll need to run the plugin again for newly created elements with the class.
Something like this:
$(document).ready(function() {
$( ".element" ).draggable({snap: ".elementContainer"});
$.fn.bindDroppable = function() {
return this.droppable({
drop:function(){
$('<tr><td class="elementContainer"></td></tr>')
.find(".elementContainer").bindDroppable().end().appendTo("table");
}
});
};
$(".elementContainer").bindDroppable();
});
This is the plugin version to cut down on code...but the basic premise is you need to call .droppable(...options...) on all the new <td> elements as well, since the widget code wasn't run on them before...because they didn't exist yet.

Related

Backbone Marionette onDomRefresh jquery-ui click multiple firing

I have defined a Marionette View, and I need to reflect the model change event. I have my initialize function like so:
initialize: function(){
_.bindAll(this,"render");
this.model.on('change',this.render);
},
Later, I have defined my jquery-ui element initializers in onDomRefresh method. It is a draggable and resizable element, which can be writeable when you click on it. When clicking outside the element, the text is saved.
onDomRefresh: function(){
var self = this;
if(this.$el.resizable()){
this.$el.resizable('destroy');
}
this.$el.resizable({ handles: "n, e, s, w, se, sw, nw, ne" });
this.$el.on('resize', function (e) {
e.stopPropagation();
});
this.$el.draggable().click(function(e){
$(".selected").removeClass("selected");
$(this).addClass("selected");
$(this).draggable( "option", "disabled", true );
$(this).attr('contenteditable','true');
$(this).css({cursor:'text'});
$(this).css({opacity:'100'});
}).blur(function(){
$(this).draggable( 'option', 'disabled', false);
$(this).attr('contenteditable','false');
$(this).css({cursor:'move'});
self.textchange(); //update and save the text in the model
});
}
The problem comes, when the model has nested some model change events, and the click function is firing more and more times. I have been looking for jquery click event solutions, and none of them seems to work for me.
Tried solutions:
this.$el.draggable().unbind("click").click(function(e){});
this.$el.draggable().off("click").on('click',function(e){});
this.$el.draggable().one('click', function(e){});
//with jquery sparkle
this.$el.draggable().once('click', function(e){});
I also notice that sometimes onDomRefresh method fires two times. Don't know how to fix that. Any ideas are more than welcomed.
I have added this call at the beggining of onDomRefresh() function, which unbinds all the events on the element:
this.$el.unbind();
Now, the click event fires just once after rerendering the view.

jQuery mobile listview multiple click event

I fill list dynamically, and after that on click I have multiple calls of event. 1st time it is repeated 1 time, 2nd time 2 times, 3rd time 3 times, etc...
First, more about this problem can be found in my other answer: jQuery Mobile: document ready vs page events
Prevent multiple event binding/triggering
Because of interesting jQM loading architecture, multiple event triggering is a constant problem. For example, take a look at this code snipet:
$(document).on('pagebeforeshow','#index' ,function(e,data){
$(document).on('click', '#test-button',function(e) {
alert('Button click');
});
});
Working jsFiddle example: http://jsfiddle.net/Gajotres/CCfL4/
Each time you visit page #index click event will is going to be bound to button #test-button. There are few ways to prevent this problem:
Solution 1:
Remove event before you bind it:
$('#index').live('pagebeforeshow',function(e,data){
$('#test-button').die().live('click', function(e) {
alert('Button click');
});
});
Working jsFiddle example: http://jsfiddle.net/Gajotres/K8YmG/
In case you have different events bound to an object:
$('#index').live('pagebeforeshow',function(e,data){
$('#test-button').die('click').live('click', function(e) {
alert('Button click');
});
});
Solution 2:
Use a jQuery Filter selector, like this:
$('#carousel div:Event(!click)').each(function(){
//If click is not bind to #carousel div do something
});
Because event filter is not a part of official jQuery framework it can be found here: http://www.codenothing.com/archives/2009/event-filter/
In a nutshell, if speed is your main concern then Solution 2 is much better then Solution 1.
Solution 3:
A new one, probably an easiest of them all.
$(document).on('pagebeforeshow', '#index', function(){
$(document).on('click', '#test-button',function(e) {
if(e.handled !== true) // This will prevent event triggering more then once
{
alert('Clicked');
e.handled = true;
}
});
});
Working jsFiddle example: http://jsfiddle.net/Gajotres/Yerv9/
Tnx to the sholsinger for this solution: http://sholsinger.com/archive/2011/08/prevent-jquery-live-handlers-from-firing-multiple-times/
More info
If you want to find more about this problem take a look at this article, working examples are included.

Jquery mobile How to tap the screen to no avail

I tested on the Apple device, and when I click on the screen when there is no effect. This is my code. Click on the events of this writing there are questions?
<script>
$(function() {
$('#test').tap(function() {
$('#menuNum').text('1');
})
})
</script>
You need to change few things.
Do not use $(function() { or classic document ready to check for a correct state, they can cause problems with jQuery Mobile. Instead use jQuery Mobile alternative called page events.
Then don't bind tap event like that, use proper modern way of doing that. In your case element must be loaded into the DOM for that kind of binding to work. And because of $(function() { sometimes it can happen that element is still loading when binding is executed. So use it like this:
$(document).on('tap','#test',function() {
$('#menuNum').text('1');
});
This method don't care if element exist or not, it will even work if element is loaded into the DOM after binding process.
Working example: http://jsfiddle.net/Gajotres/SQ7DF/
In the end you want something like this:
$(document).on('pagebeforeshow', '#index', function(){
$(document).on('tap','#test',function() {
alert('Tap');
});
});

Bind jQuery UI autocomplete using .live()

I've searched everywhere, but I can't seem to find any help...
I have some textboxes that are created dynamically via JS, so I need to bind all of their classes to an autocomplete. As a result, I need to use the new .live() option.
As an example, to bind all items with a class of .foo now and future created:
$('.foo').live('click', function(){
alert('clicked');
});
It takes (and behaves) the same as .bind(). However, I want to bind an autocomplete...
This doesn't work:
$('.foo').live('autocomplete', function(event, ui){
source: 'url.php' // (surpressed other arguments)
});
How can I use .live() to bind autocomplete?
UPDATE
Figured it out with Framer:
$(function(){
$('.search').live('keyup.autocomplete', function(){
$(this).autocomplete({
source : 'url.php'
});
});
});
jQuery UI autocomplete function automatically adds the class "ui-autocomplete-input" to the element. I'd recommend live binding the element on focus without the "ui-autocomplete-input"
class to prevent re-binding on every keydown event within that element.
$(".foo:not(.ui-autocomplete-input)").live("focus", function (event) {
$(this).autocomplete(options);
});
Edit
My answer is now out of date since jQuery 1.7, see Nathan Strutz's comment for use with the new .on() syntax.
If you are using the jquery.ui.autocomplete.js try this instead
.bind("keydown.autocomplete") or .live("keydown.autocomplete")
if not, use the jquery.ui.autocomplete.js and see if it'll work
If that doesn't apply, I don't know how to help you bro
Just to add, you can use the .livequery plugin for this:
$('.foo').livequery(function() {
// This will fire for each matched element.
// It will also fire for any new elements added to the DOM.
$(this).autocomplete(options);
});
To get autocomplete working when loaded dynamically for the on() event used in jQuery > 1.7, using the syntax Nathan Strutz provides in his comment:
$(document).on('focus', '.my-field:not(.ui-autocomplete-input)', function (e) {
$(this).autocomplete(options)
});
where .my-field is a selector for your autocomplete input element.
.live() does not work with focus.
also keyup.autocmplete does not make any sense.
Instead the thing I have tried and working is this
$(document).ready(function(){
$('.search').live('keyup' , function()
{
$(this).autocomplete({ source : 'url.php' });
});
})
This works perfectly fine.
You can't. .live() only supports actual JavaScript events, not any custom event. This is a fundamental limitation of how .live() works.
You can try using this:
$('.foo').live('focus.autocomplete', function() {
$(this).autocomplete({...});
});
After reading and testing everyone else's answers I have updated it for the current version of JQuery and made a few tweaks.
The problem with using keydown as the event that calls .autocomplete() is that it fails to autocomplete for that first letter typed. Using focus is the better choice.
Another thing I have noticed is that all of the given solutions result in .autocomplete() being called multiple times. If you are adding an element dynamically to the page that will not be removed again, the event should only be fired once. Even if the item is to be removed and added again, the event should be removed and then added back each time the element is removed or added so that focusing on the field again will not unnecessarily call .autocomplete() every time.
My final code is as follows:
$(document).on('focus.autocomplete', '#myAutocomplete', function(e){
$(this).autocomplete(autocompleteOptions);
$(document).off('focus.autocomplete', '#myAutocomplete');
});
autocomplete is not an event rather a function that enables autocomplete functionality for a textbox.
So if you can modify the js that creates the textboxes dynamically to wrap the textbox element in as a jquery object and call autocomplete on that object.
I just noticed you edited your post with this answer. It was obvious to me so I'm posting it below for others. Thank you.
$(function()
{
$('.search').live('keyup.autocomplete', function()
{
$(this).autocomplete({ source : 'url.php' });
});
});
This works for me:
$(function()
{
$('.item_product').live('focus.autocomplete', function()
{
$(this).autocomplete("/source.php/", {
width: 550,
matchContains: true,
mustMatch: false,
selectFirst: false,
});
});
});
You can just put the autocomplete inside input live event, like this:
$('#input-element').live('input', function(){
$("#input-element").autocomplete(options);
});

Fancybox, getting Fancybox to bind using LIVE() to items being loaded onto the page after load

I have a page that loads and after it loads, it pulls in a list of LIs to populate a news feed.
<li>quick view</li>
<li>quick view</li>
<li>quick view</li>
I'm trying to get fancy box to trigger when a user clicks on quick view but haven't had any luck. Any Ideas?
$(document).ready(function() {
$('.quickview').fancybox();
});
also tried:
$(document).ready(function() {
$('a.quickview').live('click', function() {
$(this).fancybox();
});
});
http://fancybox.net/
Thanks for any ideas...
Old question, but might be useful for future searchers.
My preferred solution is to fire fancybox manually from within the live event, eg:
$('.lightbox').live('click', function() {
$this = $(this);
$.fancybox({
height: '100%',
href: $this.attr('href'),
type: 'iframe',
width: '100%'
});
return false;
});
EDIT: From jQuery 1.7 live() is deprecated and on() should be used instead. See http://api.jquery.com/live/ for more info.
this should work after every ajax request
$(document).ajaxStop(function() {
$("#whatever").fancybox();
});
The problems is to attach fancybox into AJAX loaded element, right?
I got same problems and I found this solution.
I copy paste it here, see the original bug report for more info:
$.fn.fancybox = function(options) {
$(this)
.die('click.fb')
.live('click.fb', function(e) {
$(this).data('fancybox', $.extend({}, options, ($.metadata ? $(this).metadata() : {})))
e.preventDefault();
[...]
Credit goes to jeff.gran.
Since .on is now recommended over .live, and after reading over the documentation on delegated events, here's a solution I came up with (assuming your elements have a class of 'trigger-modal'):
$(document).on('click', '.trigger-modal', function() {
// remove the class to ensure this will only run once
$(this).removeClass('trigger-modal');
// now attach fancybox and click to open it
$(this).fancybox().click();
// prevent default action
return false;
});
From my understanding of Fancybox, the call to fancybox() simple attaches the plugin to the selected element. Calling fancybox on a click event won't open anything.
I think you just need to add
$(li_element_that_you_create).fancybox();
to the code that creates the new LI elements in your list
EDIT
If you're using load, then you would do something like:
$('#ul_id_goes_here').load('source/of/news.feed', function() {
$('.quickview').fancybox();
});

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