In Metor 0.3.5, when all events were jQuery events, I was able to use use jQuery UI Draggable and then handle the drag & dragstop events using a Metor event map:
Template.game.events['dragstop .card'] = function (e) {
//stuff
};
But I just read this in the Meteor mailing list:
In 0.3.6, event maps no longer depend on jQuery
And sure enough, the above technique no longer seems to work – my dragstop handler isn't called at all now.
I'd greatly appreciate any advice as to how to achieve the same effect in 0.3.6.
Nowadays, you can simply use body events to accomplish this the "Meteor" way:
Template.body.events({
'dragstop #somedivid': function(e) {
// Do stuff
}
});
Custom jQuery events can be bound with plain old jQuery, bypassing event maps altogether:
$(function () {
$('body').on('dragstop', '.card', function (e) {
//stuff
});
});
Remember to use jQuery's on function to bind the handlers, since template elements are not necessarily included in the DOM at all times.
Related
i have a problem with vuejs and kendo ui.
I need to click a tr columns
<kendo-grid-column #click="clicked"></kendo-grid-column>
i also used a #click.native but nothing
i've created also a template with <a> tag that calls "clicked" method
demo
http://dojo.telerik.com/#aldoZumaran/UTOGo
Maybe this is not exactly what you want, but it's possible to enable Sorting on the Grid and intercept the Sort Event for further handling.
Change your kendo-grid, add:
:sortable='true'
#sort='callback'
The Callback method syntax was also a bit weird, use:
callback: function(e) {
console.log(e.sort.field);
console.log(e.sort.dir);
}
Maybe this is the right place to execute your actions.
UPDATE
It's possible to call e.preventDefault(); in callback method to prevent default sorting action:
callback: function(e) {
if (e.sort.field === 'UnitPrice') {
console.log('Sort by Price not allowed!');
e.preventDefault();
}
}
Using jQuery 1.7
I'm having trouble binding a Click event to some dynamically loaded content.
I've looked around, tried .live, .delegate and .on, and I just can't get it to work.
This is my code:
$(".fileexplorer_folderdlg").delegate(".delete", "click", function () {
console.log("Hello world!");
});
The thing is, .fileexplorer_folderdlg is dynamically loaded. If I use .fileexplorer (not dynamically loaded), it works, but I have more elements with the .delete class that I do not wish to bind to (and neither element classes can be renamed or changed for various reasons).
I also tried using .fileexplorer_folderdlg .delete as the .delegate selector, didnt work either!
Of course I could just add another unique class to the elements I wish to bind to, but this really should work, right?
I believe this would work:
$(document).on('click', '.delete', function() {
if ($(this).closest('.fileexplorer_folderdlg').length) {
console.log('hello, world!');
}
});
or even just:
$(document).on('click', '.fileexplorer_folderdlg .delete', function() {
console.log('hello, world!');
});
As you've found, you can't bind on .fileexplorer_folderdlg because it's dynamic. You therefore need to bind on some static element that will contain that element at some point in the future.
Instead, this binds on the document (but will unfortunately fire for every single click on the document thereafter).
EDIT by Jeff
Although the code above did not work, modifying it a bit did the job, although not the most desirable solution.
$(document).on('click', '.delete', function () {
if($(this).closest(".fileexplorer") != null)
console.log("Thanks for your help!");
});
It works, but this event is fired for all other .delete classes, of which there are many. What I do not understand though, is why using .fileexplorer_folderdlg .delete did not work!
Here's the scenario
$("p").live('customEvent', function (event, chkSomething){
//this particular custom event works with live
if(chkSomething){
doStuff();
// BUT only per element
// So almost like a .one(), but on an elemental basis, and .live()?
}
})
Here's some background
The custom event is from a plugin called inview
The actual issue is here http://syndex.me
In a nutshell, new tumblr posts are being infnitely scrolled via
javascript hack (the only one out there for tumblr fyi.)
The inview plugin listens for new posts to come into the viewport, if the top of an image is shown, it makes it visible.
It's kinda working, but if you check your console at http://.syndex.me check how often the event is being fired
Maybe i'm also being to fussy and this is ok? Please let me know your professional opinion. but ideally i'd like it to stop doing something i dont need anymore.
Some things I've tried that did not work:
stopPropagation
.die();
Some solutions via S.O. didnt work either eg In jQuery, is there any way to only bind a click once? or Using .one() with .live() jQuery
I'm pretty surprised as to why such an option isnt out there yet. Surely the .one() event is also needed for future elements too? #justsayin
Thanks.
Add a class to the element when the event happens, and only have the event happen on elements that don't have that class.
$("p:not(.nolive)").live(event,function(){
$(this).addClass("nolive");
dostuff();
});
Edit: Example from comments:
$("p").live(event,function(){
var $this = $(this);
if ($this.data("live")) {
return;
}
$this.data("live",true);
doStuff();
});
This one works (see fiddle):
jQuery(function($) {
$("p").live('customEvent', function(event, chkSomething) {
//this particular custom event works with live
if (chkSomething) {
doStuff();
// BUT only per element
// So almost like a .one(), but on an elemental basis, and .live()?
$(this).bind('customEvent', false);
}
});
function doStuff() {
window.alert('ran dostuff');
};
$('#content').append('<p>Here is a test</p>');
$('p').trigger('customEvent', {one: true});
$('p').trigger('customEvent', {one: true});
$('p').trigger('customEvent', {one: true});
});
This should also work for your needs, although it's not as pretty :)
$("p").live('customEvent', function (event, chkSomething){
//this particular custom event works with live
if(chkSomething && $(this).data('customEventRanAlready') != 1){
doStuff();
// BUT only per element
// So almost like a .one(), but on an elemental basis, and .live()?
$(this).data('customEventRanAlready', 1);
}
})
Like Kevin mentioned, you can accomplish this by manipulating the CSS selectors, but you actually don't have to use :not(). Here's an alternative method:
// Use an attribute selector like so. This will only select elements
// that have 'theImage' as their ONLY class. Adding another class to them
// will effectively disable the repeating calls from live()
$('div[class=theImage]').live('inview',function(event, visible, visiblePartX, visiblePartY) {
if (visiblePartY=="top") {
$(this).animate({ opacity: 1 });
$(this).addClass('nolive');
console.log("look just how many times this is firing")
}
});
I used the actual code from your site. Hope that was okay.
I have a jquery code to set the click event as follow:
$("#somediv").click(function() {alert('test')});
How do I remove the above click event? it seems that the .click() method will always append the exisiting ones.
Use
$('#somediv').unbind('click');
If you only want to remove that function, you need a reference to it:
var test = function() {alert('test');};
$("#somediv").click(test);
window.setTimeout(function () {
$('#somediv').unbind('click', test);
}, 10000);
http://api.jquery.com/unbind/
You can use off() method as well.
on() will be used to create event and off() will be used to remove event.
function clickEvent() {
$("#somediv2").show().fadeOut("slow");
};
To **remove** events you can use like this,
$('#somediv').off("click", "#somediv1", clickEvent);
To **add** events you can use like this,
$('#somediv').on("click", "#somediv1", clickEvent);
http://api.jquery.com/off/
http://api.jquery.com/on/
Element.implement({
addLiveEvent: function(event, selector, fn){
this.addEvent(event, function(e){
var t = $(e.target);
if (!t.match(selector)) return false;
fn.apply(t, [e]);
}.bindWithEvent(this, selector, fn));
}
});
$(document.body).addLiveEvent('click', 'a', function(e){ alert('This is a live event'); });
The above code was done in a similar question to implement .live behaviour in Mootools. I've read the question: Prototype equivalent for jQuery live function.
How do I implement this in Prototype? Probably something that can be implemented like this:
document.liveobserve('click', 'a', function(e){ alert('This is a live event');
Edited to make the question clear.
The simplest (and perhaps not the fastest or best) way would appear to be something like:
Element.live = function(evType, evSelector, evBlock) {
var mySelector = evSelector;
var myBlock = evBlock;
this.observe(evType, function(ev) {
if (ev.target.match(mySelector)) {
evBlock(ev);
}
});
};
The parameters evSelector and evBlock are assigned to local variables so the they are available to the event handler (It's a closure). The passed block evBlock gets passed the event object just like a normal Prototype event handler.
It should be noted this is going to handle every event of type 'evType' so if it's a mouseMove/mouseOver this is going to make your page slow. Also FireBug will probably just go to sleep on you due to the number of events that it has to single step through.
EDIT: Changed as per comments