I have a button that is loaded into my page using ajax:
<button id="submit">Submit</button>
I am using this code on the page that the button is being loaded into:
<script type="text/javascript">
$(function() {
$("button#submit").click(function(){
alert('Submit Clicked');
});
});
</script>
Why is it not detecting the click from the ajax content?
When you attach the click event you attach it to the existent elements in the DOM, when the ajax content comes, new DOM elements are created and the event wasn't attached to them.
One option is to use events delegation a way (but not recommended) to do it is using the document to read the event
$(document).on('click', 'button#submit', function(){
//do something
});
A better way is put the delegation to the element which gets the new content, lets assume is a form with an id formElement, It would be something like
$("#formElement").on('click', 'button#submit', function(){
//do something
});
Using that event delegation the new content from ajax will fire the click event.
PD if you have an ID in a element just use the id, like #submit, It makes a faster selector than tag#id because It used getElementById internaly
In your code you have attached the event handler to buttons before the button is created. You need to attach the handler afterwards. Add the handler in the ajax success() function instead, after you have created the button, and everything will work ok.
Its because its dynamically added button.For that you have to use on() method try following
$(document).on('click', 'button#submit', function(){
alert("hi");
});
Related
After appending a button on Html document the jQuery event associated with it not working ?
For example:
$("#mydiv").append('X');//this is button appending
$("#mybutton").click(function(){
alert("hello");
});
Assuming you call the .click() method on #mybutton before it is actually appended to #mydiv, you need to use .on() as the button doesn't exist when you attach the event handler:
$('#mydiv').on('click','#mybutton',function(){
alert('hello');
});
Should work...
Why don't you set the click inside the append?
This way you wouldn't need to concern about the element being added or not to the document's flow, since you'd be setting the event callback on the actual DOM element variable:
$("#mydiv").append(
$('X').click(function() {
alert("hello");
})
);
Let's say I have a file called example.html that looks like this:
<button>Click me</button>
Now let's say I have another file called index.html that contains this:
$.get('example.html',function(data){
$('body').html(data);
});
How can I do this...:
$('button').click(function(){
$(this).hide();
});
...from my example.html file?
Try this:
$.get('example.html',function(data){
// load
$('body').html(data);
// use
$('button').click(function(){
$(this).hide();
});
});
You need to delegate the event to the static parent:
change this:
$('button').click(function(){
to this:
$(document).on('click', 'button', function(){
because your content is getting loaded via ajax call so initially it was not available in the dom where it is getting loaded so in that case your direct event binding won't work.
To get this work one has to delegate the event to the static parent and in your case you can delegate to body or document itself to get it working.
I think the problem is the click handler registered to the button element is not getting triggered....
The solution is event delegation
$(document).on('click', 'button', function(){
$(this).hide();
});
When you use a normal event registration model, it will register the handlers directly to the targeted which are present in the dom at the point of the handler registration execution. So elements which are added later dynamically will not get those handlers.
The solution to this is to use event delegation, in this model the handler is registered to a ancestor element which will be present when the page is loaded with the a selector to filter out the source element. This makes use of event propagation - events happening in an element is propagated to all the ancestor elements(there are few exceptions like focus event). So an event happening in an element gets propagated to the ancestor element in one of them the handler is registered then the events source element(event.target) and its ancestors is matched against the selector passed as the second parameter, if it is satisfied then the handler is executed.
I'm having a lot of issues with events triggering in my colorbox popup. Currently, there is a backbone view taking care of a user profile page. There is a gallery of photos, that when clicked, opens a colorbox that contains the photo, as well as comments, comment input form, and like buttons.
The html I put into the colorbox is a hidden div on the template itself. Everything displays just fine, but clicking things don't trigger anything. I figured I would try to attach the event handlers to the html I pass into the colorbox function, since I'm guessing the pop up colorbox is not considered to be in the backbone view's dom. The function is below, which the Backbone view triggers of a click event on an img. The var photoBox is the html I want to be displayed in the colorbox. I tried to attach event handlers to the photoBox, but to no avail.
popColorbox: function(event) {
var photoID = $(event.currentTarget).parent().attr('data-id');
var photoBox = $("#inline_example" + photoID).parent().html();
$(photoBox).on('click', '.unlike', function(){
console.log("hello");
alert("hello");
});
$(photoBox).on('click', '.like', function(){
console.log("hello");
alert("hello");
});
$.colorbox({html: photoBox});
}
Your first assumption as to why the events aren't being triggered is correct. In backbone view's the events are delegated to their root el, as such since the colorBox's elements are not children of the view's el its events aren't being triggered.
The reason why your events aren't being fired when you try binding directly to the photoBox I think is because the colorBox plug-In expects a string of html which it uses to build up it's html (as opposed to just attaching the nodes you pass in).
In order to trigger your events you will need to bind them to some existing higher element on the DOM, in this case you might need to go up to the document.
$(document).on('click', '.unlike', function(){
console.log("hello");
alert("hello");
});
$(document).on('click', '.like', function(){
console.log("hello");
alert("hello");
});
Maybe here the event listener is added on html rather than a selector. Please look at jQuery documentation on adding an event listener. http://api.jquery.com/on/
In my homepage , I have this button.
<button class="test">test</button>
And in my current code I have this script
$('.test').on('click',function(){
alert("YOU CLICKED ME");
});
Now, my application is ajaxified, so everytime I click a new page it is loaded as ajax, the problem is that the loaded page also has this button. and its markup is likethis
<div id ="firstDiv>
<div id ="secondDiv">
<button class="test">test</button>
</div>
</div
So the new content also has "#test" but how come when I click that button it does not execute the event handler I created?
var $bdy=$(document.body);
$bdy.on('click','.test',function(){
alert("YOU CLICKED ME");
});
now append your .test anytime you like
So the new content also has "#test" but how come when I click that button it does not execute the event handler I created?
Because the handler is attached to the actual element. So if the element is removed and a new element with the same class is created, the event is not associated with that new element.
You could use event delegation to handle this:
$(document.body).delegate('.test', 'click', function(){
alert("YOU CLICKED ME");
});
or
$(document.body).on('click', '.test', function(){
alert("YOU CLICKED ME");
});
(They do the same thing, note the order of arguments is different. I prefer delegate for the clarity, but I think most people use the delegating version of the far-too-overloaded on method instead.)
What that does is watch for the click on document.body, but only fire your handler if the click passed through an element matching that selector (.test, in this case).
As you said that the content is loaded through data you get in AJAX this is the possible scenario that is happening.
<button class="test">test</button> is drawn
Then it is binded to to click event
You load the new data through ajax
Try to bind that it does not.
This is because when you first bind the click event to "test" element with that class are part of the DOM. Now that you add some markup after ajax call the elements become the part of DOM, but now after you wrote the new markup you need to first unbind the click event See Here. And then re-bind the click event. This will bind the event to all elements having class "test".
P.S. I don't know the specifications of your implementation but as others have suggested you should bind events to id and not class.
I finally found out the solution. all I needed to do was define a static container which is this
$('#staticdiv').on('click','.test',function(){
alert("YOU CLICKED ME");
});
and that fixed the issue
I am a bit confused, I have a bunch of elements that get added via jquery using a ajax call and I want to attach a click handler to them (there could be a lot).
But I have no idea how to even begin this, I looked at .on and it is really confusing. I want to attach a click event handler for a certain class so that when I click on it, I get the this.id and then do stuff with it.
What you're trying to do is called event delegation.
You want to set the event listener on a higher element in the DOM that'll never change, but only fire off the event handler if the child element that has been clicked matches a specific selector.
Here's how it's done with jQuery's .on():
$(document).on('click', '.your-selector', function(){
alert(this.id);
});
P.S. You could probably apply the event listener to an element lower down in the DOM tree...
This will get you the id of a clicked element with the class "test"...
$(".test").on("click", function() {
var id = $(this).attr("id")
});
You'll need to run that after the ajax call returns. It will only bind the click event to elements that exist when it runs, so it's no good at document.ready.