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How to restart the Jquery events, to avoid the repetition of each one of them?

I have an index page that contains the following events.
<div id="sub_page"></div>
$(document).ready(function () {
$("a.menu_navegacion_abrircaja").on('click', function (ev) {
ev.preventDefault();
var href = “nombrecontrollerEJ/view_ej";
$.post(href, function (data) {
$("#sub_page").html(data);
});
});
});
In it, when you click, load the html contents of subpages in the div sub_page.
In view view view_ej, I bring html code and also, jquery code. The Jquery code of the view that is added to the index div is as follows:
$(document).ready(function () {
$('#modal_establecer_turnos').on('hidden.bs.modal', function () {
alert("hello");
});
});
By clicking on the link that contains the class "menu_navegacion_abrircaja", I get the alert ("hello");
But it turns out that there is a problem, for every time I click on the link, the alert messages are repeated (alert ("hello");). For example, the first time I click on the link that contains the class menu_navegacion_abrircaja, it works fine showing the alert once, but then I click again on the same link it shows me the alert twice, then I do it for the third time, He shows me three times the alert, and so on.
I would like to know how to solve this problem.
Will there be any way to restart the events or handler of the jquery, as are the events click, change, "hidden.bs.modal", etc., in such a way that their repetition of the events is avoided?
I have seen the methods unbind (), bind (), off (), which might be the solution, but if so, how could you apply them?

Maybe you could try something like this in the jQuery code of your subpage:
$(document).ready(function () {
$('#modal_establecer_turnos').off('hidden.bs.modal');
$('#modal_establecer_turnos').on('hidden.bs.modal', function () {
alert(“hello”);
});
});

Can javascript click a div?

Is it possible to make javascript click on a div when the div exists in the browser?
For example, the script could refresh a webpage until a div shows up (with content), and than if the div is clickable, let javascript click it (or just follow the link, if there is one).

using jquery . use $(window).load(); function which attach all event after body load all content in web page . see below code : here you can read document of load();
working example on fiddle
<div id="yourDivId"></div>
$(window).load(function () {
$(document).on('click',"#yourDivId",function () {
// Some code here
});
});

Yes, it’s possible.
You can add a click event handler function using jQuery as mentioned above.
To fire the click event of that div, do
$("#mydiv").click()

this is the correct one
<div id="mydiv></div>
$(window).load(function () {
$(document).on('click',"#mydiv",function () {
// Some code here
});
});

jQuery selectors not working with added class

I'm working on a php/jQuery store and have run into the following problem:
I have a few div boxes as articles and as soon as a box is clicked, it is moved into the shopping cart and therefore has to become inactive.
That's my code so far:
$( ".artbox" ).not( ".inactive" ).on('click', function(){
$(this).addClass("inactive");
$(this).find("#artbox").addClass("inactive")
})
It adds the class .inactive to two div objects, which are positioned inside each other. The rest of this function is left out here to keep it short. The problem is that while the according styles for .inactive are applied, I can still click on the box again and again and the function will be called again and again (although I have added the .not() selector) which results in having this specific article in the shopping cart multiple times - and this is what I would like to prevent. If I reload the page manually everything is fine and this
$( ".artbox.inactive" ).on('click', function(){
$(this).effect( "shake", {distance:1});
})
works, too (it doesn't for the items added without reloading).
But I am looking for a solution that works without reloading because I am displaying a popup window with a sucess message after the item was added to the cart.
JSFiddle
I've tried this here https://stackoverflow.com/a/12202186/2842292 but unfortunatly can't get it to work in my example.
Thanks in advance!

You can do it in two ways:
You unregister the event listener upon the click.
You can do it adding this to the event listener: $(this).unbind();,
You add an additional check at the very top of the listener:
if($(this).hasClass("inactive")) return;
Then if it even runs, it will quit and will not do the job.

The eventbinding happens on page load, so you should build the logic in the function:
$( ".artbox" ).on('click', function() {
if ($(this).hasClass("inactive")) {
$(this).effect( "shake", {distance:1});
} else {
$(this).addClass("inactive");
$(this).find("#artbox").addClass("inactive");
}
});

Bootstrap 3 modal doesnt always activate ajax code

I'm sure there is a simple answer to this I just don't seem to be able to resolve it.
I am using the bootstrap modal to return ajax content from specified url. (using $.removeData() between loads to remove content).
The problem comes with running JS on content from the form presented in the modal.
I am currently using (simplified) from within the final file (returned by ajax):
$('#myModalLg').on('shown.bs.modal', function(e) {
$(this).on('submit', 'form', function(ev) {
... event handler for form...
});
});
EDIT: along with other event handlers (datepicker for within modal included) but this code is only loaded once and then fails to activate again until the full page is reloaded
On close code:
$('#myModal, #myModalLg').on('hidden.bs.modal', function (e) {
$(e.target).removeData();
$(e.target).off('shown.bs.modal');
$('#myModal, #myModalLg').on('shown.bs.modal', function () {
$(this).find(':input:first')[0].focus();
});
});
I would be expecting the handlers to run each time #myModalLg is shown and then when it is closed it removed what has been entered and restores each time but doesn't seem to work like that.

you never turn off your shown.bs.modal have you looked into the One Event In JQuery:
I'm not sure if this will help but it seems like your redeclaring your shown.bs.modal multiple times you might want to change that to a one instead of on
$('#myModal, #myModalLg').one('shown.bs.modal', function () {
$(this).find(':input:first')[0].focus();
});

How to bind jquery function to specified element

I want to make function working only on page with specified element.
I have search page, search fields and results are in search-block div.
I want to bind function to this block, so function will not work on other pages (without <div id='search-block>...</div>)
I have next js code atm:
$(document).ready(function()
// instructions for another page (handlers for some links)
$(function(){
setInterval(findSomething,1000);
});
});
It working fine on page with search-block div, but it works fine on the other pages too. Browser tries to run this function on all other pages. I don't need this.
I tried jquery bind, but it now worked for me, don't know why :(
$("#search-block").bind(function(){
setInterval(findSomething,1000);
});
How I can bind handler to speciges too.fied block?

Instead of bind you have to check for the length of that elem:
$(document).ready(function(){
if($('#search-block').length > 0){ // <---checks the availability
setInterval(findSomething,1000);
}
});

Bind is always used with an event to bind to:
$( "#foo" ).bind( "mouseenter mouseleave", function() {
});
if you want to execute that only when the block is available on the page, use this:
if ($('#search-block').length) {
setInterval(findSomething,1000);
}
This checks the number of times #search-block is found on the page and if it is not 0(false) it executes the code.