I have the problem that my jQuery stuff isn't working after a div which includes elements being manipulated by my jQuery code are reloaded by ajax. The jQuery .live function helped me out that at least all my events are triggered. However functions like .text() are still not working. E.g.
$('#idOfElementBeingInDivWhichIsReloadedByAjax').text('New text');
Has anybody suggestions how to cope with this issue?
Edit: The problem is that the web site I'm working on loads its page content with ajax when clicking on a navigation item. All the jQuery functionality works when the sites are visited for the first time. However at the second time the DOM is reloaded and jQuery still uses the original DOM, so methods like .text() don't show changes any more. As mentioned above the .live() method helped me that at least events are still triggered after the second call of a specific page.
The only way to do this, is to make sure that your code is executed after the ajax reload. A common approach is to create a init() function, which are called from the ajax callback function.
$(function(){
$('#myParentAjaxDiv').load('somepage.html', function(){
initStuff();
});
});
function initStuff(){
$('#idOfElementBeingInDivWhichIsReloadedByAjax').text('New text');
}
Related
I have implemented a fancybox which opens and loads ajax content without any problems. But when I load new ajax content into a div in the FancyBox using jquery I need to center the FancyBox on the screen again.
function refreshContent(url) {
$("#content").fadeOut("slow", function(){
$.fancybox.showLoading();
$("#content").load(url,false, function() {
$.fancybox.hideLoading()
$("#content").fadeIn("slow");
$.fancybox.reposition();
});
})
As you can see, I have tried with the reposition() method, but with no effect. The same applies to center()
What am I missing here?
I'm using Fancybox ver 2.0.5
Maybe is a little late but in fancy 2 there is a method:
$.fancybox.reposition();
You can see the other methods here:
http://fancyapps.com/fancybox/#docs
Regards
Probably need to put you reposition call inside the complete function of the fadeIn. Otherwise it gets called before the content is visible.
I've got an Ajax update happening to my MVC view. It displays a message telling the user the operation has completed:
<% if (ViewData["colorOptionsMessage"] != null) { %>
<span class="ajaxMessage"><%= ViewData["colorOptionsMessage"] %></span>
<% } %>
I want to atuomatically fade this message out once it appears, and I'd like to do it once, and have it work site-wide. This is what I tried, which doesn't work (the message appears, but the alert does not show):
$(function () {
$(".ajaxMessage").live("load", function () {
alert("once I can get this to show I'll put in a jueryUI fadeOut"); });
});
EDIT
Just to be clear, I don't need help with the fade out code; I just need help getting this call to Live() to wire up properly.
There's no direct way to be informed automatically when new elements are added to the page. $('.ajaxMessage').live('load') would only happen when the load event fires on an image, iframe or object/embed/applet with class="ajaxMessage", a load event is not fired with its own target for every new element that enters the page.
You could only do this by (a) DOM Mutation Events, which generally aren't widely enough supported, or (b) constantly polling to fetch the .ajaxMessage selector and seeing if any new elements appear in the results.
Better to manually $('.ajaxMessage', function() {...}) immediately after (potentially) adding the content to the page, in the ajax() method's success handler.
ETA:
that jQuery handler doesn't seem to execute after an ajaxForm success
If you can't catch success directly you could try registering a global success handler using ajaxSuccess.
The code below expects you made the Ajax call through jQuery. if the ajax call was not through jQuery, then ignore this answer. Could we see the ajax call itself?
<Script type="text/javascript">
$(function () {
// this is a jQuery global ajax event that fires for every ajax, you need to check the URL
$.ajaxSuccess(function(e, xhr, settings){
if (settings.url == 'URI/ for/ajax /message/load.') {
alert("once I can get this to show I'll put in a jueryUI fadeOut");
}
});
);
</script>
When i want to add something, wait a few, and hide it, I use setTimeout function instead of live events. I add the code on the success callback.
This is a 1 second wait:
setTimeout(function(){ $("ajaxMessage").fadeOut(); }, 1000)
Of course, if you dont want to wait, just fadeOut the element in the success callback.
Can this be enough for you?
I dont think you can bind load to span.
only to IMG IFRAME BODY
As I know "ready" and "load" events are not supported by jQuery in "live". So you can use plugins as this one http://startbigthinksmall.wordpress.com/2011/04/20/announcing-jquery-live-ready-1-0-release/
Here is the demo http://cdn.bitbucket.org/larscorneliussen/jquery.liveready/downloads/demo.html
As we are facing GWT performance issues in a mobile app I peeked into Google Wave code since it is developed with GWT.
I thought that all the buttons there are widgets but if you look into generated HTML with firebug you see no onclick attribute set on clickable divs. I wonder how they achieve it having an element that issues click or mousedown events and seemingly neither being a widget nor injected with onclick attribute.
Being able to create such components would surely take me one step further to optimizing performance.
Thanks.
ps: wasnt google going to open source client code too. Have not been able to find it.
You don't have to put an onclick attribute on the HTML to make it have an onclick handler. This is a very simple example:
<div id="mydiv">Regular old div</div>
Then in script:
document.getElementById('mydiv').onclick = function() {
alert('hello!');
}
They wouldn't set the onclick property directly, it would have been set in the GWT code or via another Javascript library.
The GWT documentation shows how to create handlers within a GWT Java app:
public void anonClickHandlerExample() {
Button b = new Button("Click Me");
b.addClickHandler(new ClickHandler() {
public void onClick(ClickEvent event) {
// handle the click event
}
});
}
This will generate an HTML element and bind a click handler to it. However, in practice this has the same result as using document.getElementById('element').onclick() on an existing element in your page.
You can hook functions to the onclick event using JavaScript. Here's an example using jQuery:
$(document).ready(function(){
$("#div-id").click(function(){
/* Do something */
});
});
If you're interested in optimizing performance around this, you may need to investigate event delegation, depending on your situation.
A click event is generated for every DOM element within the Body. The event travels from the Body down to the element clicked (unless you are using Internet Explorer), hits the element clicked, and then bubbles back up. The event can be captured either through DOM element attributes, event handlers in the javascript, or attributes at any of the parent levels (the bubbling or capturing event triggers this).
I'd imagine they've just set it in a .js file.
Easily done with say jQuery with $(document).ready() for example.
In jqtouch and iui, what do you do if you want to follow a link like This is a FEED AND dynamically load the content of the <div id="feed-49"></div>?
I've tried bind/live a click handler onto the "a" and onto a parent "div" but it never gets fired, just the event for actually following the link. Thanks.
This is a simplified version of my other question:
jqtouch mobile app ajax loading issue
It depends whether you want the page pre-loaded or load-on-demand.
If you want it pre-loaded, you might want to fill in the page upon, say, $(document).ready:
$(document).ready(function(){
$('#feed-49').load('feed-49.html');
});
If you want it to load on-demand, you can listen to the pageAnimationStart event:
$('#feed-49').bind('pageAnimationStart', function(event, info){
if (info.direction == 'in')
$(this).load('feed-49.html');
});
You may want to read the jQTouch's documentation on callback events.
I just went through what you are going through and know exactly how to solve it. You need to turn that XML into JSON objects, which will be numbered [0],[1], etc.
This JQuery plugin works and rocks : http://www.fyneworks.com/jquery/xml-to-json/ Add that JS to your app. Your parse XML function will then convert the XML nodes you want (like item nodes within a channel) into JSON objects and then numbers the items.
So look how I then empty the current list of items, build a list of the items and add a custom CLICK function to the list items with a class of "sun" (i love jquery). That function then will add it's parent node title and desc to the divs that need it. The href will push it to the new jqtouch DIV which will handle all the detail info. Cool 'eh? Vote me up if this works. It did for me, like a charm.
function parseXml(xml)
{
$('#feedList').html('');
var rss = $.xml2json(xml);
$.each(rss.channel.item, function(i, item)
{
$('#feedList').empty().append('<li class=sun'+i'><a href=#contentDiv>'+item.title+'</a></li>');
$('.sun'+i).click(function() {
$('#titleDiv').empty().append(item.title);
$('#descDiv').empty().append(item.description);
});
});
};
I am using FBML for rendering certain elements on the page such as the name of the user, profil pic, etc. However when there are many FBML elements on page, there is a slight delay which occurs before they are rendered - that's fine since AJAX calls are made to the server to fetch the data by the JS FB library. However, I want to hide the container DIV holding these element till the elements have finished loading, so is there any way to specify a JS callback function which gets fired when the FBML data has finished loading?
Try FB.Event.subscribe
FB.Event.subscribe('xfbml.render', function(response) {
//xfbml.render is fired when a call to FB.XFBML.parse() completes
});
There is another option for this. First, make sure you have the xfbml=0 parameter set on all embeds. Next, you can use this small bit of jQuery:
window.fbAsyncInit = function(){
FB.XFBML.parse(null,function(){
// all FB embeds are rendered as of this point
});
};