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Call user defined jQuery function with JS

I use a jQuery window libray https://github.com/humaan/Modaal
which triggers events this way $("class of element").modaal({arg1, arg2,...});
--- I updated my question here to make it more general and used an iframe / Html instead of an external svg ---
To trigger an element e.g. in an external Html which is loaded within an iframe, I applied the following code to the iframe:
<iframe src="External.html" id="mainContent" onload="access()"></iframe>
which calls this function:
function access() {
var html = document.getElementById("mainContent").contentDocument.getElementById("IDofDIVelement");
html.addEventListener('click', function() {clicker();});
}
function clicker()
{
// console.log('hooray!');
$("#mainContent").contents().find("IDofDIVelement").modaal({});
//return false;
}
Actually it will only work on every second click. Any idea what I did not consider properly?
Best

You do not need to wait windows loading but iframe only:
$(function() {
$("#mainContent").bind("load",function(){
var myIframeElement = $(this).contents().find(".modaal");
myIframeElement.modaal({
content_source: '#iframe-content',
type: 'inline',
});
});
});

The reason why it did not work was that the iframe was not completely loaded, while jQuery tried to attach the function. As $(document).ready(function(){} did not work, the workaround was to initialize it with
$( window ).on( "load",function() {
$("#mainContent").contents().find("IDofDIVelement").modaal({});
});
This worked properly to attach the functionallity to an element within the iframe.
Actually modaal will vanish the envent handler after the overlay was opened and closed again.
So maybe someone wants to trigger an iframe element for modaal, too, here is a setup which would solve this issue.
(It can be optimised by #SvenLiivaks answer):
$(window).on("load", function() {
reload();
});
function reload() {
var length = $("#iframeID").contents().find("#IDofDIVelement").length;
// The following check will return 1, as the iframe exists.
if (length == 0) {
setTimeout(function() { reload() }, 500);
} else {
$("#iframeID").contents().find("#IDofDIVelement").modaal({
content_source: '#modalwrapper',
overlay_close: true,
after_close: function reattach() {
reload();
}
});
}
}

How do I make my click catcher work?

I'm trying to create a simple click catcher where if you click .image-class the javascript will take the href from another element with a class name of .btn and send you to it's destination. Though I keep getting errors on lines 7 & 10 saying that undefined is not a function. How do I make this work?
<script>
var ClickCatcher=
{
init:function(){
var link = jQuery('.btn')[1].href;
var imgCatch = jQuery('.image-class');
imgCatch.addEventListener("click", ClickCatcher.clickListener, false);
},
clickListener:function(){
window.location = link;
}
};
ClickCatcher.init();
</script>

You can do this with jquery with a simple click event
jQuery('.image-class').on('click', function (){
window.location = jQuery('.btn').eq(1).attr('href');
});
But if you still want to write in the way you have you can do:
var ClickCatcher = {
init: function () {
jQuery('.image-class').on('click', function (){
window.location = jQuery('.btn').eq(1).attr('href');
});
}
};
ClickCatcher.init();
Just make sure to fire the init method after dom load.
update: One issue with it is that you have coded your target etc in the code rather then pass it, so its going to be hard to reuse, you'd be better off doing:
var ClickCatcher = {
init: function ($button, loc) {
$button.on('click', function (){
window.location = loc;
});
}
};
ClickCatcher.init(jQuery('.image-class'), jQuery('.btn').eq(1).attr('href'));
That way the internal working is seperate from the dom (as you are passing the dom dependencies to the function.

#atmd showed a very good way of doing this. If you just want to know what your mistake was though. It is wa an error in your jQuery stament to get the btn href
jQuery('.btn')[1].href
you need to call the attr function and then get the href attr. and use .eq(1) to reduce the set to the first btn
jQuery('.btn').eq(1).attr('href);

Number, hover (etc) effect not work after Ajax Load More

I'm using Drupal 7 and get my content with View module on page. And my pager Views Load More module. And my thumbnail effect hover, shadow etc. Image hover using this code:
var hoverImg = '<div class="hoverimg"></div>';
$(".thumb").each(function(){
$(this).children("div").each(function(){
$(this).find("a").append(hoverImg);
});
});
$(".thumb div").hover(function() {
$(this).find(".hoverimg").animate({ opacity: 'toggle' });
});
$(".thumb").hover(function() {
$(this).find("div").each(function(){
$(this).find(".shadow").fadeOut(500);
});
});
And getting number on my current thumbnail. This code:
var c = '';
var d = '';
$('.view-content div.views-row').each(function(){
c = 0;
d = 0;
var i = 1;
d = $(this).find('.thumbimg').length;
$(this).find('.thumbimg').each(function(){
sayi=i++;
$(this).append('<div class="img_no">0'+sayi+'</div>');
});
});
Everything is OK. All effects on start page. But when click Load More button, my effects can't work another page.
How do i solve this problem? Thanks.

The reason why it stops working is due to the hover function (and your other scripts/functions) only works on existing elements. So if you add something with ajax, it wont apply to that unless you reload the script after the ajax load.
Another option is to use live() or on() (for the hover part. On is the new version of live, added in jQuery 1.7).
Live and on listens for any existing or future elements.
A live script would look something like this:
$(".yourElement").live({
mouseenter:
function () {
// Do something
},
mouseleave:
function () {
// Do something
},
mousemove:
function () {
// Do something
}
});

Javascript different variable scope on AJAX call

I have a problem with my variable scope in a simple slider script that I´ve written (I don't want to use a readymade solution because of low-bandwidth). The slider script is called on statically loaded pages (http) as well as on content loaded through AJAX. On the statically loaded page (so no AJAX) the script seems to work perfect. However when called through AJAX the methods called can't find the elements of the DOM, which halts the necessay animation that is needed for the slider.
All the events are handled through even delegation (using jQuery's on() function), this however provided no solution. I'm quite sure it has something to do with the structure and variable scope of the script, but am unable to determine how to change the structure. So I'm looking for a solution that works in both situations (called normal or through AJAX).
I tried to declare the needed variables in every function, this however resulted in some akward bugs, like the multiplication of the intervals I set for the animation, because of the function scope. Hope somebody can help me in the right direction.
// Slider function
(function (window, undefined) {
var console = window.console || undefined, // Prevent a JSLint complaint
doc = window.document,
Slider = window.Slider = window.Slider || {},
$doc = $(doc),
sliderContainer = doc.getElementById('slider_container'),
$sliderContainer = $(sliderContainer),
$sliderContainerWidth = $sliderContainer.width(),
slider = doc.getElementById('slider'),
$slider = $(slider),
$sliderChildren = $slider.children(),
$slideCount = $sliderChildren.size(),
$sliderWidth = $sliderContainerWidth * $slideCount;
$sliderControl = $(doc.getElementById('slider_control')),
$prevButton = $(doc.getElementById('prev')),
$nextButton = $(doc.getElementById('next')),
speed = 2000,
interval,
intervalSpeed = 5000,
throttle = true,
throttleSpeed = 2000;
if (sliderContainer == null) return; // If slider is not found on page return
// Set widths according to the container and amount of children
Slider.setSliderWidth = function () {
$slider.width($sliderWidth);
$sliderChildren.width($sliderContainerWidth);
};
// Does the animation
Slider.move = function (dir) {
// Makes use of variables such as $sliderContainer, $sliderContainer width, etc.
};
// On ajax call
$doc.on('ajaxComplete', document, function () {
Slider.setSliderWidth();
});
// On doc ready
$(document).ready(function () {
Slider.setSliderWidth();
interval = window.setInterval('Slider.move("right")', intervalSpeed);
});
// Handler for previous button
$doc.on('click', '#prev', function (e) {
e.preventDefault();
Slider.move('left');
});
// Handler for next button
$doc.on('click', '#next', function (e) {
e.preventDefault();
Slider.move('right');
});
// Handler for clearing the interval on hover and showing next and pervious button
$doc.on('hover', '#slider_container', function (e) {
if (e.type === 'mouseenter') {
window.clearInterval(interval);
$sliderControl.children().fadeIn(400);
}
});
// Handler for resuming the interval and fading out the controls
$doc.on('hover', '#slider_control', function (e) {
if (e.type !== 'mouseenter') {
interval = window.setInterval('Slider.move("right")', intervalSpeed);
$sliderControl.children().fadeOut(400);
}
});
})(window);
The HTML example structure:
<div id="slider_control">
<a id="next" href="#next"></a>
<a id="prev" href="#prev"></a>
</div>
<div id="slider_container">
<ul id="slider">
<li style="background-color:#f00;">1</li>
<li style="background-color:#282">2</li>
<li style="background-color:#ff0">3</li>
</ul>
</div>

I notice you have
Slider.setSliderWidth = function() {
$slider.width($sliderWidth);
$sliderChildren.width($sliderContainerWidth);
};
which is called on ajax complete.
Does you ajax update the DOM giving a new DOM element that you could get to by doc.getElementById('slider')? Then your var slider and jquery var $slider are likely pointing to things that no longer exist (even if there is a dom element with slider as the id). To rectify, whenever the ajax is invoked that replaces that element, reinitialize slider and $slider to point to the new jquery wrapped element using the same initialization you have.
slider = doc.getElementById('slider');
$slider = $(slider);
Edit:
I'm not sure where you're going with the variable scope issue, but take a look at this example.
<pre>
<script>
(function(){
var a = "something";
function x (){
a += "else";
}
function y() {
a = "donut";
}
function print (){
document.write(a +"\n");
}
print ();
x();
print ();
y();
print ();
x();
print ();
})();
document.write(typeof(a) + "\n");
</script>
</pre>
It outputs into the pre tag
something
somethingelse
donut
donutelse
undefined
This isn't all that different from what you're already doing. As long as a is not a parameter of a method and is not declared with var in a nested scope, all references to a in code defined within your function(window,undefined){ ...} method will refer to that a, given that a is defined locally by var to that method. Make sense?

To begin, surely you can replace all the getElementById using a jQuery approach. i.e. replace $(doc.getElementById('next')) with $('#next')

I think that when you use on it doesn't search the element for the selector as you are assuming. So you would have to use:
$doc.on('click', '#slider_control #prev',function(e){
e.preventDefault();
Slider.move('left');
});

Wait, what gets loaded through Ajax? The slider-html code? In that case, the Slider has already been 'created' and a lot of your variables will point to nowhere (because these DOM elements did not existed when the variables were initialized). And they will never do so either.

How can I use jQuery and Javascript from firefox add-on?

I can't create a new element in the page. I check the page and domain when the page is onload, that's work, but I don't know how can I create a new element in the correct window page.
window.addEventListener("load", function() { myExtension.init(); }, false);
var myExtension = {
init: function() {
var appcontent = document.getElementById("appcontent"); // browser
if(appcontent)
appcontent.addEventListener("DOMContentLoaded", myExtension.onPageLoad, true);
},
onPageLoad: function(aEvent) {
var unsafeWin = aEvent.target.defaultView;
if (unsafeWin.wrappedJSObject) unsafeWin = unsafeWin.wrappedJSObject;
var locationis = new XPCNativeWrapper(unsafeWin, "location").location;
var hostis = locationis.host;
//alert(hostis);
if(hostis=='domain.com')
{
var pathnameis=locationis.pathname;
if(pathnameis=='/index.php')
{
$("#left .box:eq(0)").after('<div id="organic-tabs" class="box"></div>'); // this code somewhy doesn't working, but if I copy to FireBug it't work.
}
}
}
}
My question is: How can I use Javascript and jQuery from firefox addon when I want to manipulate html in the correct window content? What is need from here
$("#left .box:eq(0)").after('<div id="organic-tabs" class="box"></div>');
for working.

This code has a bunch of issues. For one, appcontent is not the browser, gBrowser is. So it should be:
init: function() {
gBrowser.addEventListener("DOMContentLoaded", myExtension.onPageLoad, true);
},
Then, using wrappedJSObject is absolutely unnecessary (and also not safe the way you do it).
var wnd = aEvent.target.defaultView;
var locationis = wnd.location;
Finally, you are trying to select an element in the browser document (the document that your script is running in), not in the document loaded into the tab. You need to give jQuery an explicit context to work on:
$("#left .box:eq(0)", wnd.document)
But you shouldn't use jQuery like that, it defines a number of global variables that might conflict with other extensions. Instead you should call jQuery.noConflict() and create an alias for jQuery within myExtension:
var myExtension = {
$: jQuery.noConflict(true),
....
myExtension.$("#left .box:eq(0)", wnd.document)

Here is a template you can use that incorporates your sample code. I also added an additional statement so you could see another use of jQuery. Important points:
You must load jQuery before you can use it. You should myplace the jQuery library file you want to use in Chrome, for example, in the chrome/content directory.
Use window.content.document as the context for every jQuery
operation on the contents of the Web page
Use this as the context of a successful search result to help you
insert code in the correct spot.
window.addEventListener('load', myExtension.init, false);
var myExtension = {
jq : null,
init : function() {
var app;
// Load jQuery
var loader = Components.classes["#mozilla.org/moz/jssubscript-loader;1"].getService(Components.interfaces.mozIJSSubScriptLoader);
loader.loadSubScript("chrome://myExtension/content/jquery-1.5.2.min.js");
myExtension.jq = jQuery.noConflict();
// Launch extension
if ((app = document.getElementById("appcontent"))) {
app.addEventListener("DOMContentLoaded", myExtension.run, true);
}
},
run : function() {
// make sure this is the correct Web page to change
var href = event.originalTarget.location.href;
if (href && href.match(/http:\/\/(www\.)?domain\.com\/(index\.php)/i)) {
changeScreen();
}
},
changeScreen : function() {
// make changes to the screen
// note the "window.content.document) in the first jQuery selection
myExtension.jq("#left .box:eq(0)", window.content.document).after('');
// note the use of "this" to use the search results as the context
myExtension.jq("#right", window.content.document).each(function() {
myExtension.jq("tr td", this).append('MATCH!');
});
}
}