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Replace onclick function of an object using Javascript

How do I replace the destination URL on a button when using onclick?
<div id="my_button" onclick="window.location.replace('/destination1')">Button<div>
So it would look like this
<div id="my_button" onclick="window.location.replace('/destination2')">Button<div>
The following Javascript code doesn't work though. Why?
<script>
document.getElementById("my_button").onclick="window.location.replace('/destination2')"
<script>

onclick that you have used in tag - is html event attribute, but onclick in tag, that you also tring to change - is div object property.
Both are like "onclick", but it's not the same.
So, if you want to make thing work, do this:
document.getElementById("my_button").onclick = () => window.location.replace('/destination2');
onclick div property need function(callback) not a string

A simple way to do it would be by adding a listener and preventing the default behavior of the event
document
.getElementById('my_button')
.addEventListener('click', function (event) {
event.preventDefault();
window.location.replace('/destination2');
});
working example

element.onclick requires a function to be assigned and differs from the attribute <node onclick=""> where the content will be wrapped up in a function automatically.
If you want to change the attribute, make use of element.setAttribute("onclick", "...");
element.setAttribute("onclick", "window.location.replace('/destination2');");
Behaves similar to:
element.onclick = function() { window.location.replace('/destination2'); };
Another solution would be using the data-attributes which can be accessed by element.dataset.name.
Example:
<div id="my_button" data-path="/destination2" onclick="window.location.replace(this.dataset.path);">Button</div>
And to change it:
my_button.dataset.path = "/otherPath";

dynamic <a></a> doesn't run with jquery

I want to make a web site for a photos.
Inside a dynamic div created with a jquery function (.append) there is this anchor:
<a href='#' style='color:green;' id='"+this.foto_id+"' data-id='"+this.foto_id+"' class='modificaDataFoto modificaDataFoto"+this.foto_id+"'>Modifica</a>
The page is load normally and if I use the browser debugger I see all the HTML code including all dynamic data from database...
But if I try to set a class of the anchor in a jquery function it doesn't run:
$('.modificaDataFoto').bind('click', function(event) {
event.preventDefault();
var idFotoModifica= $(this).attr("data-id");
console.log(idFotoModifica);
$("dataFoto"+idFotoModifica).focus();
$("dataFoto"+idFotoModifica).css("color", "red");
$(this).attr("class", "modificaDataFotoConferma");
});
Why does that function not work?

.bind() only works on elements that are already present in the DOM. It's likely that you're trying to bind the click event to the element before the dynamic element exists.
There are two ways to fix this:
wait until after the <a> element has been appended to the document before running your $('.modificaDataFoto').bind(), or
Delegate the click event from a non-dynamic element (or the document itself):
$(document).on('click', '.modificaDataFoto', function() {
// this is essentially the same as your existing function; I've
// consolidated it a bit and removed the no-longer-needed preventDefault.
$("dataFoto" + $(this).attr("data-id")).css("color", "red").focus();
$(this).attr("class", "modificaDataFotoConferma");
}

Use this code:
$(document).on('click', '.modificaDataFoto', function(event) {
event.preventDefault();
var idFotoModifica = $(this).attr("data-id");
console.log(idFotoModifica);
$("dataFoto"+idFotoModifica).focus();
$("dataFoto"+idFotoModifica).css("color", "red");
$(this).attr("class", "modificaDataFotoConferma");
});

I'm not entirely sure if I understood your question but if you are trying to change the element's class name then you can simply do this:
$( this ).switchClass( "old class", "modificaDataFotoConferma", 1000, "easeInOutQuad" );
instead of
$(this).attr("class", "modificaDataFotoConferma");
You also have the .toggleClass()
EDIT:
You can also use removeClass() and then use the addClass().

How to call click() for element?

I am using a lightgallery plugin where the click event is defined as:
$(document).on('click', 'a[rel^=lightbox], area[rel^=lightbox], a[data-lightbox], area[data-lightbox]', function(event) {
self.start($(event.currentTarget));
event.preventDefault();
});
However, when I try to call the event like this:
$(".catalog-content a[data-lightbox='test']").first().trigger('click');
... it doesn't seem to work. What am I doing wrong? How can I trigger the click event?
Example jsFiddle

To "simulate a click" using jQuery, you are correct in that you can just use the .trigger(...) method:
$(".myClass").trigger("click");
The real issue is that you are "clicking" something that doesn't exist. There is no ".catalog-content a[data-lightbox='test' element. As Velthune suggests, you can add the .catalog-content class to the div container to fix this; however, note that there also is no a[data-lightbox='test'] element.
Instead, in your Fiddle you define the following:
<a href="http://..." data-lightbox="350xi" id="test">
something
</a>
So you actually just want to click on the first a element with a data-lightbox attribute of "350xi":
$("a[data-lightbox='350xi']").first().trigger("click");

Hey i have gone through the jsfiddle and updated it please go through it..
$(document).ready(function() {
$(".cars-container a[rel!='']").click(function() {
var rel = $(this).attr("rel");
$(".cars-container a[data-lightbox='" + rel + "']:first").trigger('click');
});
});
click below jsfiddle link to see the working example:-
http://jsfiddle.net/wHJ8E/3/

Your code in fiddle can't work.
1) Either use a different selector as Devendra suggested.
2) Or add the .catalog-content class to the div container:
<div class="cars-container catalog-content">
Fiddle
3) Both Devendra and I can't understand.

prevent click event from element but not from <a> children

my code looks like this:
<div class="disabledClickevent">
<ul>
<li><a>link1</a></li>
<li><a>link2</a></li>
</ul>
</div>
the div has a click event that gets disabled with return false;
my problem is that this also disables the <a> links

$(document).on('click','.disabledClickevent' function(e) {
if( e.target !== this )
//clicked out side
return;
//clicked inside
});

I would do this:
$(".disabledClickevent").on("click", ":not(a)", function(e) {
//do stuff with your div
});
This excludes a from the click event.

Could be a solution:
$('.disabledClickevent').on('click',function(e){
if($(e.target).is(':not(a)'))
return false;
});
Or set click handler to links:
$('.disabledClickevent a').click(function(e){
e.stopPropagation();
});

you can use the :not() selector in jQuery
check this link out http://api.jquery.com/not-selector/
hope this helps.

If you don't plan to add new "disabledClickevent" divs to the page via Javascript, you could just do this:
$('.disabledClickevent').click(function() {...});
or
$('.disabledClickevent').bind('click', function() {...});
That attaches the event only to the already-existing div, without doing any sort of delegation, so the links will just work normally as you want them to.
To be clear, this is only a viable solution if all of the "disabledClickevent" divs that you plan to have already exist on the page at the time that you bind the event.

jQuery on(click) doesn't work but on(hover) does

After initialize js I create new <div> element with close class and on("click") function doesn't work.
$(document).on('click', '.post-close', function () {
alert("hello");
});
but on('hover') work perfectly.
$(document).on('hover', '.post-close', function () {
alert("hello");
});
but I need to make it work on click.

It's because you're not preventing the default behaviour of the browser. Pass e into your handler and then use e.preventDefault()
$(document).on('click', '.post-close', function (e) {
e.preventDefault();
alert("hello");
});
Edit
Also, bind the handler before creating the new <div>

why not use something like
$('.post-close').click(function(){
//do something
});
If the element was added dynamically use:
$(document).on('click', '.post-close', function(){
//do something
});
edit:
like danWellman said, you can add the preventDefault IF you want to make sure no other code is executed. otherwise use the code above.
edit2:
changed the .live to .on

It's an old post but I've had a exactly same problem (element created dynamically, hover works, but click doesn't) and found solution.
I hope this post helps someone.
In my case, I found ui-selectable is used for parent element and that was preventing from click event propagate to the document.
So I added a selector of the button element to ui-selectable's 'cancel' option and problem solved.
If you have a similar probrem, check this
Try turn of libraries for parent element
You're not using stopPropagation() in parent element ?