Develop Reference

How Trigger Element event synchronously in IE?

$(function() {
$('#btn').click(function() {
$('#inp').focus();
console.log('two');
});
$('#inp').focus(function() {
console.log('one');
});
});
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<button id="btn">
Click
</button>
<input type="text" id="inp">
If you run the above snippet in Chrome the out put will be
one
two
When you run in IE the out put is
two
one
How to make it synchronous in IE?

The solution is to use triggerHandler method.
.triggerHandler() returns whatever value was returned by the last
handler it caused to be executed. If no handlers re triggered, it
returns undefined
console.log('two') will only run when focus event is finished.
$(function() {
$('#btn').click(function() {
$('#inp').triggerHandler('focus');
console.log('two');
});
$('#inp').focus(function() {
console.log('one');
});
});

Prevent onclick from firing

I was working around with form submissions in html. Please take a look at below code
<form id="form1">
<button id="btn1" onclick="clicked();">Submit</button>
</form>
<script>
$("#btn1").click(function (event) {
alert("event triggered");
if(some_condition == true){
// stop firing onclick method but it always submits the form
event.stopImmediatePropogation(); // not working
event.preventDefault(); // not working
event.stopPropogation(); // not working it's for bubbled events
}
});
function clicked(){ alert("clicked me"); }
</script>
I want to stop clicked() function from firing which is attached to inline onclick attribute. I would like to run my jquery click function and if something goes wrong, I dont want to trigger onclick but it always runs clicked() function. Could any one help me. Any help is greatly appreciated.

The order in which an onxyz handler is called relative to dynamically-attached handlers varies from browser to browser, so your handler may well not run before the original does.
To deal with that, you save and remove the onclick handler:
var btn = $("#btn1");
var clickHandler = btn[0].onclick;
btn[0].onclick = false;
Then, in your handler, if you want that function to be called, you call it:
clickhandler.call(this, event);
Example:
// Get the button
var btn = $("#btn1");
// Save and remove the onclick handler
var clickHandler = btn[0].onclick;
btn[0].onclick = false;
// Hook up your handler
$("#btn1").click(function(event) {
alert("event triggered");
if (!confirm("Allow it?")) {
// Disallowed, don't call it
alert("stopped it");
} else {
// Allowed, call it
clickHandler.call(this, event);
}
});
// The onclick handler
function clicked() {
alert("clicked me");
}
<form id="form1" onsubmit="return false">
<button id="btn1" onclick="clicked();">Submit</button>
</form>
<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.11.1/jquery.min.js"></script>

Try event.stopPropagation()
api docs

if condition is true then remove the 'onclick' attribute
if (some_condition == true) {
$("#btn1").removeAttr('onclick').click(function(event) {
alert("event triggered");
//do something
});
}
function clicked() {
alert("clicked me");
}

I am sharing a quick workaround without knowing why you cannot add logic to stop adding "onclick="clicked();" code which you are saying getting automatically added.
I recommend you hide button with id as "btn1". Add style display:none. You donot need on ready function for this but simply add style attribute to the button btn1 or if that is also not possible directly then use jQuery to do that post document ready.
Read :
How to change css display none or block property using Jquery?
Then add a new button to the form using jQuery with id as "btn2" and add register the btn2 click event as well. DO this after form load.
<form id="form1">
<div id="newbut">
<button id="btn1" onclick="clicked();">Submit</button>
</div>
</form>
jQuery("#newbut").html('<button id="btn2">Submit</button>');
$(document).on('click', '#btn2', function(){
// Your Code
});
Refer below url to how to register click event for new button:
Adding click event for a button created dynamically using jQuery
jquery - Click event not working for dynamically created button

Can't you do the condition check and the clicked() logic in one function? i.e
<script>
function clicked() {
if(some_condition == true){
return;
}
alert("clicked me");
}
</script>

How to stop javascript onclick event

I have external link which render image with javascript onclick event.
I need to stop this click event.How can i do this ?
For example:
Html is render by external script:
<div class="demo-link">
<img alt="" onclick="verifylock();" src="https://example.com" style="cursor:pointer;cursor:hand">
</div>
I have tried this with jquery but not get any luck:
$(".demo-link > img").click(function(e){
e.preventDefault();
});

You can remove the onclick value when dom is ready:
$('.demo-link > img').attr('onclick','').unbind('click');
Working Demo

You can always return false from the onClick event handler, call preventDefault, stopImmediatePropagation or other methods, but it would be no use here since HTMLs onclick gets invoked BEFORE jQuery onclick. If you do not want to simply remove the 'onclick' from HTML, you can change it programmatically (and even store it with jquery data() method for future use if needed).
$(".demo-link > img").each(function(e) {
$(this).onclick = function() { // overriding the onclick
return false;
}
});
A working snippet below:
function defaultOnClick() {
alert('Default event handler invoked!');
}
$('.clickable').each(function() {
$(this).data('onClickBackup', this.onclick);
this.onclick = function(event) {
alert('Overriden onclick');
return false;
// if you need to ever call the original onclick, then call below
// $(this).data('onClickBackup').call(this, event || window.event);
};
});
<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.8.3/jquery.min.js"></script>
<div class="clickable" onclick="defaultOnClick()">Click me!</div>

$(".demo-link > img").click(function(e){
return false;
});

You are writing event on click and calling a function using onclick in img tag. So remove onclick from img tag like.
<img alt="" src="https://example.com" style="cursor:pointer;cursor:hand">
if you want to call a function verifylock() call it from handler for click

Try your own code with return false;
<img alt="" onclick="verifylock(); return false;" src="https://example.com" style="cursor:pointer;cursor:hand">
</div>

Capturing an event with jquery

I got a double event to manage. The two events are both "click" and they're handled with jquery. The html is the following:
<div class="siteMap" style="width:23%;">
<h5>Divisione Anticontraffazione</h5>
<span class="menufooter">
<span class="link1">Introduzione</span><br>
<span class="link2">Filosofia</span><br>
<span class="link3">Negozio online</span></span><br>
</div>
Then i have my click events which fires inside the menufooter span and inside every single link span. The code is like this:
$(document).ready(function() {
$('span.menufooter').click(function() {
//my code here
});
$("span.link1").click(function() {
//my code here
});
});
I need an event capturing action, the click on the span menufooter has to fire the event before the click on the span link1 fires. At this point, none of the two events is firing. Any hint?

How about only fire event on .menufooter
$(document).ready(function() {
$('span.menufooter').click(function(e) {
//my code here 1
// Capture Event Propagation
if ( $("span .link1").find(e.target).length>0 ){
//my code here 2
};
});
});
http://jsfiddle.net/9QLtG/

You could prevent the click from bubbling, and then trigger the click on the parent element so whatever is in that handler executes first (unless it's async)
$(document).ready(function () {
$('.menufooter').click(function () {
// fires before ....
});
$("span.link1").click(function (e) {
e.stopPropagation();
$('.menufooter').trigger('click');
// .... this fires, as it's triggered above
});
});
FIDDLE

I would have 1 click listener that listens to the wrapper. You can check the event's target to see if they actually clicked on a link and run code accordingly.
For example:
$(document).ready(function() {
$('.container').click(function(e) {
// Perform action when they clicked in the main wrapper,
// regardless of whether or not it was a link.
console.log("I clicked in the wrapper...");
if ($(e.target).hasClass('link')) {
// Perform action if they clicked on a link.
console.log("...but more specifically, on a link.");
}
});
});
Here's a fiddle that demonstrates this: http://jsfiddle.net/WaYFr/

Try this event.stopPropagation();
$("span.link1").click(function(event) {
event.stopPropagation();
...
});

html div onclick event

I have one html div on my jsp page, on that i have put one anchor tag, please find code below for that,
<div class="expandable-panel-heading">
<h2>
<a id="ancherComplaint" href="#addComplaint"
onclick="markActiveLink(this);">ABC</a>
</h2>
</div>
js code
$('.expandable-panel-heading:not(#ancherComplaint)').click(function () {
alert('123');
});
function markActiveLink(el) {
alert($(el).attr("id"));
}
here I when I click on div I got alert with 123 message, its fine but when I click on ABC I want message I want to call markActiveLink method.
JSFiddle
what is wrong with my code? please help me out.

The problem was that clicking the anchor still triggered a click in your <div>. That's called "event bubbling".
In fact, there are multiple solutions:
Checking in the DIV click event handler whether the actual target element was the anchor
→ jsFiddle
$('.expandable-panel-heading').click(function (evt) {
if (evt.target.tagName != "A") {
alert('123');
}
// Also possible if conditions:
// - evt.target.id != "ancherComplaint"
// - !$(evt.target).is("#ancherComplaint")
});
$("#ancherComplaint").click(function () {
alert($(this).attr("id"));
});
Stopping the event propagation from the anchor click listener
→ jsFiddle
$("#ancherComplaint").click(function (evt) {
evt.stopPropagation();
alert($(this).attr("id"));
});
As you may have noticed, I have removed the following selector part from my examples:
:not(#ancherComplaint)
This was unnecessary because there is no element with the class .expandable-panel-heading which also have #ancherComplaint as its ID.
I assume that you wanted to suppress the event for the anchor. That cannot work in that manner because both selectors (yours and mine) select the exact same DIV. The selector has no influence on the listener when it is called; it only sets the list of elements to which the listeners should be registered. Since this list is the same in both versions, there exists no difference.

Try this
$('.expandable-panel-heading:not(#ancherComplaint)').click(function () {
alert('123');
});
$('#ancherComplaint').click(function (event) {
alert($(this).attr("id"));
event.stopPropagation()
})
DEMO

Try following :
$('.expandable-panel-heading').click(function (e) {
if(e.target.nodeName == 'A'){
markActiveLink(e.target)
return;
}else{
alert('123');
}
});
function markActiveLink(el) {
alert($(el).attr("id"));
}
Here is the working demo : http://jsfiddle.net/JVrNc/4/

Change your jQuery code with this. It will alert the id of the a.
$('.expandable-panel-heading:not(#ancherComplaint)').click(function () {
markActiveLink();
alert('123');
});
function markActiveLink(el) {
var el = $('a').attr("id")
alert(el);
}
Demo

You need to read up on event bubbling and for sure remove inline event handling if you have jQuery anyway
Test the click on the div and examine the target
Live Demo
$(".expandable-panel-heading").on("click",function (e) {
if (e.target.id =="ancherComplaint") { // or test the tag
e.preventDefault(); // or e.stopPropagation()
markActiveLink(e.target);
}
else alert('123');
});
function markActiveLink(el) {
alert(el.id);
}

I would have used stopPropagation like this:
$('.expandable-panel-heading:not(#ancherComplaint)').click(function () {
alert('123');
});
$('#ancherComplaint').on('click',function(e){
e.stopPropagation();
alert('hiiiiiiiiii');
});

Try out this example, the onclick is still called from your HTML, and event bubbling is stopped.
<div class="expandable-panel-heading">
<h2>
<a id="ancherComplaint" href="#addComplaint" onclick="markActiveLink(this);event.stopPropagation();">ABC</a>
</h2>
</div>
http://jsfiddle.net/NXML7/1/

put your jquery function inside ready function for call click event:
$(document).ready(function() {
$("#ancherComplaint").click(function () {
alert($(this).attr("id"));
});
});

when click on div alert key
$(document).delegate(".searchbtn", "click", function() {
var key=$.trim($('#txtkey').val());
alert(key);
});