Develop Reference

Using :not() to ignore clicks on children links?

In a script I'm writing with JQuery I'm trying to add a click handler to a div, but ignoring clicks on the children a tags inside it.
You can see a JSFiddle of how I'm currently trying (and failing) to make it happen here: http://jsfiddle.net/q15s25Lx/1/
$(document).ready(function() {
$(document).on('click', '.post:not(a)', function(e) {
alert($(this).text());
});
});
<div class="post">This is some text in a div. Click me please.</div>
In my real page, the a tags all have their own click handlers, so I need to be able to listen for those concurrently.
So, ideally I'd like to use something like the :not() selector to ignore clicks on this particular handler.
Is something like this possible?

You'll need to add another handler that acts on the anchor and stops the event from propagating:
$(document).on('click', '.post a', function (e) {
e.stopPropagation();
e.preventDefault();
});
Without this, when you click the a the event bubbles up to the parent .post, and the handler fires on that anyway.

You need to stop event propagation to child elements using .stopPropagation():
$(document).on('click', '.post a', function(e) {
e.stopPropagation();
});
Working Demo

Just return false; in the end of event handler.
$(document).on('click', '.post', function (e) {
alert($(this).text());//will show entire text
});
$(document).on('click', '.post a', function (e) {
alert($(this).text());//will show 'text'
return false;
});
working fiddle: http://jsfiddle.net/q15s25Lx/2/
return false will server as both e.preventDefault() &
e.stopPropagation()

Try to stop the event from bubbling up the DOM tree using stopPropogation()
$(document).ready(function() {
$(document).on('click', '.post a', function(e) {
e.stopPropagation();
alert($(this).text());
});
});
Fiddle Demo

All of the other posts did not explain why your code failed. Your selector is saying : Find an element that has the class post and is not an anchor. It is NOT saying if a child was clicked and was an achor do not process.
Now there are two ways to solve it. One is to prevent the click from bubbling up from the anchors. You would add another listener on the anchors.
$(document).on('click', '.post a', function (evt) {
evt.stopPropagation(); //event will not travel up to the parent
});
$(document).on('click', '.post', function (evt) {
console.log("Click click");
});
Or the other option is not to add a second event, but check what was clicked.
$(document).on('click', '.post', function (evt) {
var target = $(evt.target); //get what was clicked on
if (target.is("a")) { //check to see if it is an anchor
return; // I am an anchor so I am exiting early
}
console.log("Click click");
});

Or jsut let jquery handle it all for you. return false
$(document).on('click', '.post:not(a)', function() {
alert($(this).text());
return false;
});

How to avoid events on elements behind others in HTML and JavaScript/jQuery

I have a table with some div's inside it.
I want an event to happen when I click on a td element, but I also want an event to happen when I click on a div element.
As you can see in this fiddle http://jsfiddle.net/rkGkp/1/ my problem is, when I click on the div element, both the div and td event is triggered, but I only want the div's event to be triggered.
I use these event listeners
$(function() {
$("#div").on("click", function() {
alert("a div is clicked");
});
});
$(function() {
$(".td").on("click", function() {
alert("a td is clicked");
});
});
What can I do to avoid the element behind my div to trigger an event?

Have a look here: FIDDLE
I used stopPropagation()
CODE
$("#div").on("click", function(event) {
event.stopPropagation();
alert("a div is clicked");
});

This is the easiest way to achieve what you need. Simply check if the click target is on the div:
$(function() {
$("#div").on("click", function() {
alert("a div is clicked");
});
});
$(function() {
$(".td").on("click", function(e) {
if(!$(e.target).is("#div")){
alert("a td is clicked");
}
});
});

How to prevent assigning click event on child items?

I made an click event for .menu li which has ul in it using $(".menu li:has(ul)"). It works but it also assigns the same event to .menu li ul li. I tried using e.stopPropagation();, e.PreventDefault(); and return false; inside function but that didn't worked at all. How to prevent that?
Here's the fiddle to show up actual problem.
jQuery I used:
$(".menu li:has(ul)").click(function() {
console.log('has ul');
if($(this).children("ul").is(':visible')){
$(this).children("ul").slideUp();
}else{
$(this).children("ul").slideDown();
}
});

Try this instead:
$('.menu a').click(function() {
var next=$(this).next();
if(next.prop('tagName')=='UL') {
if(next.is(':visible')){
next.slideUp();
}else{
next.slideDown();
}
}
});

It's Works now Fiddle you need to add return false on child UL

jquery on() with addClass/removeClass

I have this script which needs to work on an ipad. It was working on chrome with live, however, moving it to on makes it unresponsive.
Any ideas, I would be grateful!
$("#clickAll").on("click", function () {
$(".welcome1poi").show();
$(this).addClass("active");
});
$("#clickAll.active").on("click", function () {
$(this).removeClass("active");
$(".welcome1poi").hide();
});

try this
$("#clickAll").on("click", function(){
$(".welcome1poi").toggle();
$(this).toggleClass("active");
});
updated
as suggested
$(document).on('click',"#clickAll", function(){
$(".welcome1poi").toggle();
$(this).toggleClass("active");
});
since it was working with live() i assume your element with id clickAll is added dynamically so try this
$(document).on("click","#clickAll", function () {
$(".welcome1poi").show();
$(this).addClass("active");
});
$(document).on("click","#clickAll.active", function () {
$(this).removeClass("active");
$(".welcome1poi").hide();
});
you can replace the $(document) selector with your closest element to #clickAll element which will be more efficient

This will delegate the event to the body and it will be caught when it bubbles up the DOM.
$('body').on("click", "#clickAll", function(){
$(".welcome1poi").show();
$(this).addClass("active");
});
$('body').on("click", "#clickAll.active", function(){
$(this).removeClass("active");
$(".welcome1poi").hide();
});

Are you adding and removing the "active" class in order to create a toggle effect? If so, try .toggle(), like so:
$('#clickAll).toggle(
function() { $('.welcome1poi').show(); },
function() { $('.welcome1poi').hide(); });

click elsewhere

i have problem with click event. click to another element with event(click), doesn't count like click elsewhere. I want active one element or none.
demo: http://jsfiddle.net/WP4RH/
code:
$('span').click(function(){
var $this = $(this);
if($this.hasClass('active')){
$this.removeClass('active')}
else $this.addClass('active');
$('div').click(function(){
if (!$this.has(this).length) {
$this.removeClass('active');
}
});
return false;
});

Add this at the beginning of your span event handler:
$('.active').removeClass('active');
Demo
This is assuming that you want multiple clicks on the same span to retain active. If you don't want that, then let me know and I can modify the code.
​

For starters, You should move the div handler outside and then removeClass based on div element.
$('span').click(function(e) {
e.stopPropagation();
$(this).parent().find('span').removeClass('active');
$(this).toggleClass('active');
});
$('div').click(function() {
$(this).find('span').removeClass('active');
});
DEMO: http://jsfiddle.net/WP4RH/1/

Don't bind a click handler inside a click handler, just check if the target is the div or the span inside the click handler instead. Also, when adding the active class to this, just remove it on any sibling span :
$('span').on('click', function(){
$(this).toggleClass('active').siblings('span').removeClass('active');
});
$('div').on('click', function(e){
if (e.target == this) $('span').removeClass('active');
});
FIDDLE
​

If you want to keep the toggle-off functionality when the span itself has been clicked, then you can use the following. Also, note that you're binding an event handler each time a span is clicked.
http://jsfiddle.net/WP4RH/7/
$("span").click(function() {
$(this).siblings("span").removeClass("active"); // remove from other spans
$(this).toggleClass("active"); // toggle this span
return false;
});
​
$("div").click(function() {
$(this).find("span").removeClass("active"); // remove from all spans
});