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jquery click event working multiple times

I am using jquery to find each target element in iframe on click event. But the click event triggers mutiple times on each click. This is the code that i used. I am using this function to style each target element on click. How can i solve this issue.
var getElement = function () {
$('[data-edit="froala"]').on('froalaEditor.initialized', function (e, editor) {
var $div_tag = $('[data-edit="froala"]').find('iframe').contents().find('body');
$div_tag.on('click', function(e) {
var element_name = e.target.nodeName.toLowerCase();
var $target_class = $('[data-target="'+element_name+'"]');
trigger_object(e);
});
});
}
var trigger_object = function (e) {
$('body').on('change', '[data-style="hr-style"]', function (event) {
$(e.target).css($(this).data('css'),this.value);
});
$('body').on('change', '[data-style="div-style"]', function (event) {
$(e.target).css($(this).data('css'),this.value);
});
}

unbind your existing change event before binding it to prevent event from working multiple times
add .off('change') to unbind all exiting change event
before .on('change') to bind the change event
$('[data-style="hr-style"]').off('change').on('change', function (event) {
$(e.target).css($(this).data('css'),this.value);
});
$('[data-style="div-style"]').off('change').on('change', function (event) {
$(e.target).css($(this).data('css'),this.value);
});

Then probably foralaEditor.initialized is fired multiple times.
Try with off, but on the div_tag click not on body,
var getElement = function () {
$('[data-edit="froala"]').on('froalaEditor.initialized', function (e, editor) {
var $div_tag = $('[data-edit="froala"]').find('iframe')contents().find('body');
$div_tag.off('click').on('click', function(e) {
var element_name = e.target.nodeName.toLowerCase();
var $target_class = $('[data-target="'+element_name+'"]');
trigger_object(e);
});
});
}

How to let onclick(); listens to more than one button

I am trying to let Jq listen to three buttons at the same onclick method
then trigger a function and call the clicked button by $(this);
here is a sample :
$("body").on('click', 'a.home:visible', 'a.mobile:visible', 'a.phone:visible', function () {
var attr = $(this).attr('attr');
$(this).parents('.dropdown-menu').prev().prev().text(attr);
});

You did it basically correct. Your approach is fine. But you have to combine it in one string, not as single parameters. And you don't need :visible, because you can't click on invisible elements. ;)
$("body").on('click', 'a.home, a.mobile, a.phone', function() {
var attr = $(this).attr('attr');
$(this).parents('.dropdown-menu').prev().prev().text(attr);
});
If the elements are static you should even use a normal event listener instead of a delegation.
$('a.home, a.mobile, a.phone').click(function() {
var attr = $(this).attr('attr');
$(this).parents('.dropdown-menu').prev().prev().text(attr);
});

Put them in one quotes
$("body").on('click', 'a.home:visible,a.mobile:visible,a.phone:visible', function() {
alert('Clicked')
});
JSFIDDLE

Jquery .on click event - removing the bound element

I have the following code:
$("#content h1").on("click", function(){
var f = $(this);
var clicked_id = f.data("id");
var children = _.filter(data, function(key){
var id = key.id.split("-")
id.pop()
id = id.join("-")
return clicked_id == id;
});
if (children.length != 0) {
$("#content").html("");
_.each(children, function(obj){
$("#content").append("<h1 data-id='"+ obj.id +"'>"+ obj.txt +"</h1>")
});
}
});
So basicly Im binding a .on "click" event to h1. On the click I clean the element containing the H1 then I add a new H1 element. Now the click does not register anymore. How should I actually be doing this so I can keep clicking?

Use on like so (event delegation):
$("#content").on("click", "h1", function() {
Now, each time you click #content, it'll check for an h1 and run the event. Your previous code only bound the handler to the h1 at runtime.

Maybe you could bind this way?
$(document).on("click", "#content h1", function(){
...
});

Assign click-event on a new element in the event itself

I want to create a new element and assign this element the same event for onclick, which it has created it.
DEMO
$(function(){
var counter = 0;
$('.sub').click(function(event){
event.stopPropagation();
counter++;
$div = $(this); // makes more sense in the original code
$div.append('<div class="sub" title="subsub">subsub' + counter + '</div>');
//$div.find('.sub').click // <-- ?????
});
});
In my demo I want to create a new subsub for every sub, which was clicked. Than I want to add the same click event to the new subsub element.
Could anyone help me with this?
I've found nothing for this problem. Maybe I don't have the correct keywords for google or SO :/

Just use event Delegation
$(document).on('click', '.sub', function(event){
Your click events seem to be working correctly at this point,because you are using append which actually nests the new div inside the div that is clicked. Try using after and the functionality breaks.
$(function(){
var counter = 0;
$(document).on('click', '.sub', function(event){
event.stopPropagation();
counter++;
$div = $(this); // makes more sense in the original code
$div.after('<div class="sub" title="subsub">subsub' + counter + '</div>');
});
});
Check Fiddle

Why not create proper elements instead :
$(function(){
var counter = 0;
$('.sub').on('click', doStuff);
function doStuff(event) {
event.stopPropagation();
counter++;
var $div = $(this),
$sub = $('<div />', {'class':'sub',
title : 'subsub',
text : 'subsub' + counter,
on : {
click : doStuff
}
}
);
$div.append($sub);
}
});

trying to append content to DOM element

I'm trying to add a div to a row of content with the click of a button. My code works for the first row but not for any other row. Please help. This is the function for the button:
$(".addMMbtn").each(function() {
$(this).bind("click",
function() {
var thisRow = $(this).closest(".txtContentRow");
var thisTxt = thisRow.find(".txtContent");
var cellStr = '<div class = "mmCell prep"></div>';
$(cellStr).appendTo(thisTxt);
}
);
});
You can see a fiddle of the problem here: http://jsfiddle.net/z7uuJ/

$(".addMMbtn") will only find the elements present on the page and your code will only attach click event handler on them. Since you are adding the elements dynamically you should either use delegate or on (if you are using jQuery 1.7+) for click event to work on them too. Try this
Using delegate
$('#default').delegate('.addMMbtn', 'click', function() {
$('<div class = "mmCell prep"></div>')
.appendTo($(this).closest(".txtContentRow").find(".txtContent"));
});
Using on
$('#default').on('click', '.addMMbtn', function() {
$('<div class = "mmCell prep"></div>')
.appendTo($(this).closest(".txtContentRow").find(".txtContent"));
});
Demo

Instead of assigning click event directly on the button you need to use on():
$(document).on("click", ".addMMbtn",
function() {
var thisRow = $(this).closest(".txtContentRow");
var thisTxt = thisRow.find(".txtContent");
var cellStr = '<div class = "mmCell prep"></div>';
$(cellStr).appendTo(thisTxt);
}
);
In this case event handler will be subscribed to all newly added elements.
Code: http://jsfiddle.net/z7uuJ/5/

You don't need to loop through the elements to bind the handler:
$(".addMMbtn").live('click', function() {
var thisRow = $(this).closest(".txtContentRow");
var thisTxt = thisRow.find(".txtContent");
var cellStr = '<div class = "mmCell prep"></div>';
$(cellStr).appendTo(thisTxt);
});