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Adding to innerHTML of document.body causes jQuery .on() to not find its target

So I have some dynamically generated HTML stuff. If you click a button, it adds some html that has another button, and you can add that other html several times, generating several copies of it. This is all inside of a <form> tag, so I need to use e.preventDefault() on each button to prevent javascript from trying to submit the data. Each button also has its own code for onclick. There's a problem with javascript-added click events on newly generated content however. If I have <button class="myBtn"></button>, then in javascript I have $(".myBtn").click(...), that will work just fine, but only for buttons that already exist when the javascript code is run, meaning newly generated buttons won't have the event attached. The solution to that problem is found here.
Now we come to the real issue. That all works perfectly, but only until I add to document.body.innerHTML. As soon as I execute the line document.body.innerHTML += "Text", the code from the link above no longer executes when the generated button is clicked.
I have an example here: https://jsfiddle.net/6hvgatLy/1/

You are re-writing the whole body innerHTML which will remove all event listeners
Use append() instead
Change
$("#deadlyBtn").click(function(e){
e.preventDefault();
document.body.innerHTML += "Now try clicking [Add new Input]"
})
To
$("#deadlyBtn").click(function(e){
e.preventDefault();
$('body').append("Now try clicking [Add new Input]")
})
DEMO
Alternatively you can change your event delegation to an asset that isn't being overwritten like body or document
$(document).on("click", ".formDiv .innerContainer .innerBtn", function(e){
e.preventDefault()
$(this).before($('<input type="text" placeholder="Textbox"/>'))
})

Adding `click` event to child of `iframe` of `iframe` - not woking

I am trying to add a click event to one of the element which is nested inside of a iframe of iframe.
this is a iframe .ssueContentIframe under this, there is another iframe added as #SmartReportTabContent1 so inside of the second iframe element, I am trying to add a click event like this:
Basically, I don't know when both of iframe will be loaded and all elements will available, for future I am adding:
$('.ssueContentIframe').contents().find( '#SmartReportTabContent1' ).find('.ui-grid-selection-row-header-buttons.ui-grid-icon-ok.ui-grid-row-selected').on('click', function(){
alert('Hi');
});
But not working. what is the correct way to wait until both of iframe exist and add the click event to one of the element here?
Thanks in advance!

You need to use "contents" on the second iframe as well. to wait for it to load, you can use the "ready" event on the second iframe.
eg:
$("#SmartReportTabContent1").find("iframe").ready(function (){
// do something once the iframe is loaded
});
Update
refer to this question

Well I edit this, first do a load of the first iframe and check it loaded well, then do the function on click on the element.
$(function(){
$('#foo1').load(function(){
alert("Loaded");
$('#foo1').contents().find('iframe').contents().find('#test').on('click', function(event) {
alert("Working");
});
});
});
I tested it on my computer and worked perfectly, remember addind the library, if you don't add a library it won't work.
Just change the ID i used to your IDs.

How to bind an event within dynamically loaded content on a click event?

I have a div inside my html with the id pageContent. When users click various buttons, it will load the appropriate content. When a user clicks the javaQuestions button it loads, javaQuestions.html into the div just fine. However, inside, the javaQuestions.html, I have a collapsible list, and I can't figure out a way to "bind" the li collapse/uncollapse without having the user to click TWICE. Right now what I have is:
$("#pageContent").on('click', 'li', function (){
$('.collapsible').collapsible();
});
So I guess what happens is, first the user clicks on the button, and it loads content. Then, the user clicks on any li, and it enables the "collapsible()" function, but does not uncollapse/collapse the content. Only when the user clicks a second time does it works fine. I tried adding the line $('.collapsible').collapsible(); into the event that loads the javaQuestions.html content, but it doesn't do anything. Kind of at a roadblock, any ideas?
EDIT: Here is the code that loads the content:
$("#pageContent").on('click', '#javaQuestions', function (e) {
fadeIn("#pageContent", "../java-questions/javaQuestions.html", 50);
fadeIn("#commentsContent", "../comments/comment-section.html", 500);
});
I also really want to know how this will function once I figure it out. But as you can see, the above function loads the javaquestions.html, and I can't seem to find a way to ALSO bind 'li' to be collapsible in one swoop.

Have you tried using jQuery bind method? You can bind your handler to, say, body and then you don't have to care about loading and attaching a handler after it.
Update: may be this will help:
$(document).ready(function() {
$("body").on('click', '#pageContent li', function (){
$('.collapsible').collapsible();
});
});

Use this DOCUMENT because it is dynamically loaded
$(document).on("click","li #pageContent",function(){
$('.collapsible').collapsible();
});

removing dynamic javascript tag does not remove attached events

i'm creating an application where a user can make a html layout and attach javascript to it.
Now i'm trying to make it so when they click a button, they go to a preview mode where they can see it in action.. so when they click i add the javascript tag ( with their javascript) in the head of the iframe.. this all works fine!
But the problem is when they leave the preview mode, i remove the javascript tag, however when i have code like this:
$('#button').click(function()
{
alert("ok");
});
it still alerts ok when i click the html button (when not in previewmode!), which shouldn't happen!
It seems that when removing the javascript tag, the listeners aren't removed.. Or am i doing it wrong?
Now my question: is there a way to make it so these added eventlisterens are removed when i remove the script tag?
AND YES: i know you can remove eventhandlers with .off(), but since i already have event handlers attached, these will be removed also, and i don't want this!
So two options i can think off:
- rebuild the whole iframe
- store the eventhandlers that were added by the user and when leaving the preview mode, removing them.
Thanks in advance

Each time you "evaluate" JavaScript, it becomes part of the browser's "image", and whether the source is present on the page no longer matters. You need to manually unbind the event, or replace the html segment to which the event was bound.
To remove events from an html element, you can use:
element.parentNode.innerHTML = element.parentNode.innerHTML
This rebuilds the DOM tree using the same HTML.

you need to unbind event.
You can do it by using jquery unbind() or off()
like this:
$("#button").unbind("click");
or
$("#button").off("click");
Demo: http://jsfiddle.net/a6NJk/664/
jquery Doc: http://api.jquery.com/off/
Another good answer: Best way to remove an event handler in jQuery?

Set the event:
var $button = $('#button');
$button.on("click", function() {
alert("ok");
});
Take off the event:
$button.off("click");
You can take off that specific function too
var $button = $('#button');
var eventFunction = function() {
alert("ok");
});
// Set event up
$button.on("click", eventFunction);
// Take event off
$button.off("click", eventFunction);
If you want to remove all events from an element you can use
$("#yourSelector").off()

Because it's not jQuery in general but also vanilla javascript, it would be too much work to keep track of javascript changes, so rebuilding the iframe would be the best option here.

jQuery .load() not working when called from loaded content

My primary navigation [Our Clients, Our Culture, Our People] uses .load() to pull the content and display it in a div on the same page w/o refresh.
I would like for links within the new content to do the same, just display whatever content is being referenced in this same div. However, when they're clicked it goes directly to the new page.
$(function(){
$("a.aboutContent").click(function (e) {
e.preventDefault();
$("#aboutContainer").load($(this).attr("href"));
});
});
So, when Our People is clicked, it pulls ourpeople.htm in to the #aboutContainer div. If you click on a link inside of ourpeople.htm, I'd simply like for that content to display in the same #aboutContainer div. I'm assigning the aboutContent class to links in the subpages as well, but it still isn't working.

You will need to use .live() to listen to clicks from everything, including new DOM elements:
$(function(){
$("a.aboutContent").live('click', function (e) {
e.preventDefault();
$("#aboutContainer").load($(this).attr("href"));
});
});
The reason for doing this is, jQuery code runs when the page is ready - it will attach a click handler to every dom anchor with the class aboutContent - when you load new content, those elements where not there when the page was ready, so never have a click handler attached to them.
Using .live() takes care of that for you. Alternatively, you could place your code in a function, and run that function when the new content is loaded, that way when it runs, it will attach a click handler and the DOM elements will be there, trouble with this is, you would have to mark elements as already having a click handler, or you would end up adding x number of click handlers to some elements.

Probably you can return false from click handler to prevent browser to exeucte HREF on its own.
Like,
$(function(){
$("a.aboutContent").click(function (e) {
e.preventDefault();
$("#aboutContainer").load($(this).attr("href"));
return false;
});
});
Otherwise I would suggest to call some javascript function on href using href="javascript:clickhandler('')"