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Using jQuery with partial views in asp.net mvc 4

I have a View with the following layout
The parent View is composed of several PartialViews as ilustrated in the picture. One of which is a list where each item has a corresponding Edit button which loads the item into another PartialView, but this is loaded via ajax into a modal dialog-bootstrap. This part works fine.
The problem I have is that no script or jquery event related to the controls of this modal gets executed. For example datepicker widget is never displayed, can not capture the change event of the dropdown, or capture the submit event for the form or the click event of Submit button.
All the scripts are placed in the main View. for example this is the event handler for the modal submit:
$(function () {
$('#myModal form').on('submit', function () {
console.log("okk");
clearErrors();
$.post($(this).attr('action'), $(this).serialize(), function (data, status) {
$('#myModal').modal('hide');
$("#details").html(data);
}).error(function (error, status, a, b) {
$('.modal-body p.body').html(error.responseText);
});
return false;
});
});
In my _Layout.cshtm I have included the necessary scripts (I think):
#Scripts.Render("~/js")
#Scripts.Render("~/bundles/globalization")
#RenderSection("scripts", required: false)
</div>
</body>
where "~/js" is:
bundles.Add(new ScriptBundle("~/js").Include(
"~/Scripts/jquery-{version}.js",
"~/Scripts/jquery-migrate-{version}.js",
"~/Scripts/bootstrap.js",
"~/Scripts/bootstrap-datepicker.js",
"~/Scripts/jquery.validate.js",
"~/scripts/jquery.validate.unobtrusive.js",
"~/Scripts/jquery.validate.unobtrusive-custom-for-bootstrap.js",
"~/Scripts/locales/bootstrap-datepicker.es.js"
));
What could be the problem with my scripts and jQuery for this dialog ? Indications from similar questions in the site have not worked for me so far.
I have tried to express as clearly as possible if something is not understood the code or the illustrations I'm all ears. Thank you

As Partial View is loaded via ajax you need to initialize datepicker after the html is rendered on page so you need to put datepicker initialization script in success function callback:
$.post($(this).attr('action'), $(this).serialize(), function (data, status) {
$('#myModal').modal('hide');
$("#details").html(data);
$("#textBoxID").datepicker(); // initialize datepicker for partial view element here
})
For events you can write delegated events to make them work,choose the closest element of the partial view, i am using container of partial in which you are appending partial view html:
For click event:
$("#details").on("click","#someButtonId",function(){
// write event code here
})
For more detials of on() you can see HERE

If they are being loaded in by ajax you may need to give more context to your selectors.
$(document).on('submit', '#myModal form', function () { ...

Run Javascript when Asp.net page is loading

I wonder if there is way to run JS code whenever a asp.net page is contacting the server.
I.e. I'm looking for a general event handler that is triggered whenever a call to the server is made for runat="server" components.
I know there's a way to get jQuery.ajax() to run JS code before and after a call to the server is made, but I'm not sure how to do it in asp.net. Especially, since this projects uses a lot of custom components.
The goal here is to show some kind of loading image when a button is clicked, to prevent the user to click a button twice and also to show the user that the system is working.
If the click causes the page or an updatepanel to refresh, I'd only like to display the loading image before the refresh, eg. User clicks, "loading" is shown, page/update panel is refreshed (causing the "loading" to disappear), the new page/content is displayed as normal.
Update 1:
I can't use UpdateProgress because some of the buttons aren't inside UpdatePanels. What I really want to do is to fire a JS as soon as any button/control that will contact the server is clicked. I.e. if the user clicks a dropdown which doesn't contact the server, nothing should happend. But if that dropdown has any connection to the server, a JS should be run.
I understand that this is ASP.NET Ajax and not jQuery Ajax, I only used jQuery as an example. Because I've used a jQuery method before (with jQuery Ajax) to trigger JS before the server call was made. Eg. to lock the element that was clicked or to display a "Loading..." screen.
I could of course add a bit of a JS hack to every page which adds a "onclick" event to every button manually, but I thought it would be better if there was a general solution for this (since I've got lots of pages, each with a few buttons that contact the server on them).
Update 2:
When I think about it, it doesn't necessarily need to be a JS that is triggered. It would be good enough if the page somehow only made sure that the same button wasn't clicked twice. Either by disabeling the button or by adding something in front of it (like a "Loading..." screen).

You can use an UpdateProgress for this to use with update panels, but if you are doing a full page postback (i.e. not ajax) the only loading animation you can have is the browsers own.
UpdateProgress:
<asp:UpdateProgress ID="UpdateProgress1" runat="server">
<ProgressTemplate>
Shiny loading aninmation
</ProgressTemplate>
</asp:UpdateProgress?

Here is how you can do it using jquery:
$(function() {
$('a[href]').on('click', function(e) {
var self = this;
e.preventDefault();
loadAsync($(self).attr('href'));
});
});
function loadAsync(url) {
$('div#result').fadeOut(200, function() {
$('div#loader').fadeIn(200, function() {
$.get(url, function(data) {
$('div#result').html($(data));
}).done(function() {
console.log('done');
}).fail(function() {
$('div#result').html('Error');
}).always(function() {
$('div#loader').fadeOut(200, function() {
$('div#result').fadeIn(200);
});
});
});
});
}

Loading an ASP.Net page inside another ASP.Net page using Ajax

I managed to load a distinct page inside a div in another page using jquery ajax. The problem I am encountering is that when I click a button inside this sub page, it cause a postback to the whole parent page. How can I force it to just refresh the panel it resides in?
One more thing. I am not sure I am doing the right thing, but the parent page has its own form with runat=server settings, while the secondary page that is loaded inside the div has its own form. I cannot remove the form from the latter because it causes an error.
I have seen some asp.net ajax tutorials but they do not deal with loading sub pages that havbe their own .net controls. Can anyone guide me to some good tutorial?
Thanks!

You need to create a empty with an Id for example : ajaxDiv
Then you create a jquery script like this :
<script type="text/javascript">
// Called at the loading of a page
$(document).ready(function () {
//here you execute an ajax function
$.ajax({
url: 'the url to retrieve data as string ex : /Webservice/Test',
type: 'get',
async: true of false,
//if the request is successful, you load the content of your div with the strings you loaded
success: function (data) {
$("ajaxDiv").html(data);
}
});
});
</script>
the tips is to load your page into the ajax request.

OK, since you are using jQuery, let's set up that event manipulation.
I assume the following markup:
<button type="submit" id="mySubmitButtonId">Submit</button>
Then, on my page I have the following javascript:
$("#mySubmitButtonId").click(function(event) {
event.preventDefault();
// do here what you want to do instead including refresh of a section via ajax
});

How to "PRE-PROCESS" ajax call before showing the mvc view?

I'm not so expert with ajax, so I find it hard to look for the better answer. I've tried creating separate ".js" file that contains the call for rest service (for validation of user session), but it doesn't work.
My goal is to validate user session before loading my views (in MVC). The only way to use the logic of validating the given session with the database is to call a rest service via url using ajax.
This code works well (inside Home View):
<script type="text/javascript">
$(function () {
$.get('#Url.Action("GetSession", "Auth")', function (getdata) {
if (getdata.UserID && getdata.SessionID && getdata.SourceIP) {
$.post('http://website.com/Rest/Authenticate/ValidateUserSession', JSON.stringify(getdata), function (response) {
if (response == false) { window.location.replace('#Url.Action("SignUp", "Auth")'); }
});
} else {
window.location.replace('#Url.Action("SignUp", "Auth")');
}
});
});
</script>
<h2>
Home</h2>
#*The content here should not appear, unless session is validated.*#
The only problem is that, the process of validation takes 3 to 5 seconds, so the user sees the Home page before the ajax call returns the result whether the validation was successful or not. If validation/response returns false it will redirect to sigup page.
I don't know what is the best practice with this process. For now I jsut don't want the Home view show to the user unless session is validated. Hope I'd explain it well. Please suggest if you have the better idea.
Additional info:
If possible, I like doing this:
<script type="text/javascript">
if(!validated()){
window.location.replace('#Url.Action("SignUp", "Auth")');
}
</script>
<h2>
Home</h2>
#*The content here should not appear, unless session is validated.*#

Why can't you consume the rest service at server side ? Technically there should be no reason for not being able to do that. Here's a tutorial discussing exactly that : http://codebetter.com/johnvpetersen/2012/03/22/accessing-a-asp-net-webapi-rest-service-from-asp-net-mvc/
That should take care of everything. If for some reason that's not possible for you, then you can do the following,
Make your home page a partial view.
Instead of loading home page, load an empty page with processing icon (or whatever message you want to show.)
Talk to the REST service and if got the reply then load Home page's partial view using JQuery else load sign up partial view.
Here's an article discussing how to load MVC partial views using JQuery: http://www.codeproject.com/Articles/34221/JQuery-Partial-Views-in-ASP-NET-MVC

ajax asp.net and jquery conflict

I have multiple jquery files in my project.
Yesterday googled this problem and find solution. I edited this
$(document).ready(function () {
with this
function pageLoad() {
Now problem is that if i will use this in all my jquery files. Every scripts will stops working.

That is two different things. The
$(document).ready(function () {
is from and to jquery, it tells when the DOM is loaded and it start executing the code inside.
The
function pageLoad() {
is from ASP.NET and it is one of handler of Application.Load (client-side)
The reason why it will stop working is because in the same page you can only have one event with the same name, by default pageLoad will be the handler of Application.Load but you can associate another name. I don't see why you have problems between the two, can you explain it better?
EDIT:
After your comment, if you want/need to use Sys.Application.add_load (by default pageLoad) you should add a different name for each js file you need.
From msdn:
// Attach a handler to the load event.
Sys.Application.add_load(applicationLoadHandler);
function applicationLoadHandler() {
// Redirect to alternate page if not business hours.
var d = new Date();
if (!(8 < d.getHours() < 17)) {
window.location = "AfterHours.aspx";
}
As you can see, you can give a different name to add_load and you should give a different name to use more than one for the same page/request.
}

Replace pageLoad with something like this:
$(function() {
// This will be executed when the page is loaded
});
or to avoid name collisions...
(function($) {
// This will be executed when the page is loaded
})(jQuery);
Edit: As rich.okelly pointed out the second example will run as soon as the script is loaded.