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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();
}
});
}
}

Remember JavaScript with cookie

I’m working on a left menu bar that expands on a button click.
I want to save the state of the menu, if it is expanded or not.
When it refreshes the class must still be added.
$('#menu-action').click(function() {
$('.sidebar').toggleClass('active');
$('.main').toggleClass('active');
$(this).toggleClass('active');
if ($('.sidebar').hasClass('active')) {
$(this).find('i').addClass('fa-close');
$(this).find('i').removeClass('fa-bars');
} else {
$(this).find('i').addClass('fa-bars');
$(this).find('i').removeClass('fa-close');
}
});
// Add hover feedback on menu
$('#menu-action').hover(function() {
$('.sidebar').toggleClass('hovered');
});

Try Local Storage:
$(document).ready(function() {
if(localStorage.getItem("active")) {
$('.sidebar').addClass("active")
}
});
$(window).unload(function() {
localStorage.setItem("active", $('.sidebar').hasClass("active"));
});
Local storage is not supported by all browsers. See the link above. You can use extensions like store.js to support old browsers.
Another option is to use cookie plugin as mentioned here.

Since you have not yet made it clear on how you want to read or write cookies, I'd recommend using js-cookie to make handling a little easier. Handling cookies with plain JS is possible, but a rather cumbersome task.
A solution using the mentioned library would work like this (Expecting you have added js.cookie.js before your code to your HTML)
// Store references to reusable selectors
var $menuAction = $('#menu-action');
var $menuActionI = $menuAction.find('i'); // the <i> inside #menu-action
var $sidebar = $('.sidebar');
var activeClass = 'active';
// Docs: https://github.com/js-cookie/js-cookie/tree/v2.1.0#basic-usage
var isActive = Cookies.get('site-menu-active') || false;
function toggleMenu() {
$sidebar.toggleClass('active', isActive);
$('.main').toggleClass('active', isActive);
$menuAction.toggleClass('active', isActive);
$menuActionI.toggleClass('fa-close', isActive);
$menuActionI.toggleClass('fa-bars', isActive);
isActive = !isActive;
Cookies.set('site-menu-active', isActive, { expires: 7 });
}
// Calling immediately to set to state read from cookie
toggleMenu();
// Add click interaction
$menuAction.click(toggleMenu);
// Add hover feedback on menu
$menuAction.hover(function() {
$sidebar.toggleClass('hovered');
});

The Html5 storage is the best option for these scenario. Here you can change the localStorage to sessionStorage based on the requirement:
1)localStorage - even close the browser the data is alive
2)sessionStorage - while close the browser the data is removed
We can also remove the stored data
$('#menu-action').click(function() {
$('.sidebar').toggleClass('active');
$('.main').toggleClass('active');
$(this).toggleClass('active');
localStorage.setItem("active", $('.sidebar').hasClass('active'));
if ($('.sidebar').hasClass('active')) {
$(this).find('i').addClass('fa-close');
$(this).find('i').removeClass('fa-bars');
} else {
$(this).find('i').addClass('fa-bars');
$(this).find('i').removeClass('fa-close');
}
});
$(document).ready(function(){
if(localStorage.getItem("active")){
$('.sidebar').addClass('active');
$('.main').addClass('active');
$('#menu-action').find('i').addClass('fa-close');
$('#menu-action').find('i').removeClass('fa-bars');
}
});

How to find JS function name?

I have implemented on a website a picture gallery that does not allow (it seems) the auto sliding. So at the moment I have to push on a button to see the next picture. My purpose is to catch the function that allows to move to the next picture and to set a timeout to go to the next picture automatically.
How can I get the JS function name using Google Chrome developer tools?
Thank you
UPDATE
This is the Gallery script: http://tympanus.net/Development/ScatteredPolaroidsGallery/
I would like to implement auto sliding on it

source for code proposal from: https://github.com/codrops/ScatteredPolaroidsGallery/issues/4
(function() {
function autoSliding(timeout) {
var self = this;
clearTimeout(self.timeOut);
self.timeOut = setTimeout(function() {
self._navigate('next');
}, timeout);
}
new Photostack( document.getElementById( 'photostack-1' ), {
afterShowPhoto: function(context) {
autoSliding.call(context, 3000)
},
afterNavigate: function(context) {
autoSliding.call(context, 3000)
}
});
new Photostack( document.getElementById( 'photostack-2' ), {
afterShowPhoto: function(context) {
autoSliding.call(context, 3000)
},
afterNavigate: function(context) {
autoSliding.call(context, 3000)
}
});
}())

This should do the work
$('.navigate-next').click();
Or for auto scroll
setInterval(function(){$('.navigate-next').click();},1000);
Change 1000 for whatever you wish

If you are allowed to use jquery in your code, then, you can use $._data() method.
syntax is $._data($("selector of the element")[0], "events")
This will return an Object of all events bounded to that element. Then get the click event and call the handler attribute of the click event.

ckeditor not auto saving if changes done by editor

Following is my js code which works fine when i add new values or give enter space etc. Basically the following code calls a function after 5 seconds after the last key is pressed to save textarea values. The issue I am facing is the function does not make any call if i use editor to change the content within itself like bold the text, underline etc without pressing any key on the editor. Kindly let me know how can I modify the following code so it gets trigger on last change after 5 seconds?
CKEDITOR.replace( 'editor1', {
on: {
instanceReady: function() {
},
key: function() {
onautosave(); // Function which makes call after 5 seconds to save values
}
}
});
function onautosave(){
if(autosave_timer)
clearTimeout(autosave_timer);
autosave_timer = setTimeout(save, 5000);
}

Try using the on change event, that might work better for you:
CKEDITOR.replace('editor1', {
on: {
instanceReady: function() { },
change: function() {
onautosave(); // Function which makes call after 5 seconds to save values
}
}
});
function onautosave() {
if (autosave_timer) {
clearTimeout(autosave_timer);
}
autosave_timer = setTimeout(save, 5000);
}

Redefining a jQuery dialog button

In our application we use a general function to create jQuery dialogs which contain module-specific content. The custom dialog consists of 3 buttons (Cancel, Save, Apply). Apply does the same as Save but also closes the dialog.
Many modules are still using a custom post instead of an ajax-post. For this reason I'm looking to overwrite/redefine the buttons which are on a specific dialog.
So far I've got the buttons, but I'm unable to do something with them. Is it possible to get the buttons from a dialog (yes, I know) but apply a different function to them?
My code so far:
function OverrideDialogButtonCallbacks(sDialogInstance) {
oButtons = $( '#dialog' ).dialog( 'option', 'buttons' );
console.log(oButtons); // logs the buttons correctly
if(sDialogInstance == 'TestInstance') {
oButtons.Save = function() {
alert('A new callback has been assigned.');
// code for ajax-post will come here.
}
}
}

$('#dialog').dialog({
'buttons' : {
'Save' : {
id:"btn-save", // provide the id, if you want to apply a callback based on id selector
click: function() {
//
},
},
}
});
Did you try this? to override button's callback based on the need.

No need to re-assign at all. Try this.
function OverrideDialogButtonCallbacks(dialogSelector) {
var button = $(dialogSelector + " ~ .ui-dialog-buttonpane")
.find("button:contains('Save')");
button.unbind("click").on("click", function() {
alert("save overriden!");
});
}
Call it like OverrideDialogButtonCallbacks("#dialog");
Working fiddle: http://jsfiddle.net/codovations/yzfVT/

You can get the buttons using $(..).dialog('option', 'buttons'). This returns an array of objects that you can then rewire by searching through them and adjusting the click event:
// Rewire the callback for the first button
var buttons = $('#dialog').dialog('option', 'buttons');
buttons[0].click = function() { alert('Click rewired!'); };
See this fiddle for an example: http://jsfiddle.net/z4TTH/2/
If necessary, you can check the text of the button using button[i].text.
UPDATE:
The buttons option can be one of two forms, one is an array as described above, the other is an object where each property is the name of the button. To rewire the click event in this instance it's necessary to update the buttons option in the dialog:
// Rewire the callback for the OK button
var buttons = $('#dialog').dialog('option', 'buttons');
buttons.Ok = function() { alert('Click rewired!'); };
$('#dialog').dialog('option', 'buttons', buttons);
See this fiddle: http://jsfiddle.net/z4TTH/3/

Can you try binding your new function code with Click event of Save?
if(sDialogInstance == 'TestInstance') {
$('#'+savebtn_id).click(function() {
alert('A new callback has been assigned.');
// code for ajax-post will come here.
});
}