How to activate <a> event by clicking on another element - javascript

<div class="imgtumb"><img src="..."></div>
sometext
<script>
$(document).ready(function() {
$('div.imgtumb img').click(function() {
$('a.imgtarget').click();
});
});
</script>
The link not work (dont open a big image). What i do wrong?
----Edited----
Thank you guys, but .trigger() is not working too. I resolved this problem something like this:
$(document).ready(function() {
$('div.imgtumb img').click(function() {
window.location.href = $('a.imgtarget').attr("href");
});
});
----Edited 2---
Question which explained why .click() is not working with a tag

try this:
<script>
$(document).ready(function() {
$('div.imgtumb img').click(function() {
$('a.imgtarget').trigger('click');
});
});
</script>
the event trigger is the event to make another event to an element
http://api.jquery.com/trigger/

use trigger()
. A call to .trigger() executes the handlers in the same order they would be if the event were triggered naturally by the user:
try this
$('a.imgtarget').trigger('click');
instead of
$('a.imgtarget').click();

try to use this instead of .click()
window.open(
'toBigImg',
'_blank'
);

Related

Jquery click function not triggering a click

I have this simple HTML page:
<html>
<head>
<script src="http://code.jquery.com/jquery-latest.min.js" type="text/javascript"> </script>
<script>
$(document).ready(function () {
$('#test').click();
});
</script>
</head>
<body>
<a id="test" href="http://google.com">http://google.com</a>
</body>
</html>
I want to trigger a click event on the element called test on loading the page. The actual code is actually more sophisticated than that but this very basic example is not working. I checked the console log and there are no notices there.
You need to use to trigger the DOM element click
$('#test').get(0).click();
Use .get(), It retrieve the DOM elements matched by the jQuery object. As .click() will trigger the element click event handler. It will not actually click the element.
Using simple Vanialla JS
document.getElementById('test').click()
DEMO
.click() doesn't actually send a click event.
What .click() does is define something that happens when you click on the element.
The .click() you are triggering is correct but you are missing a click event for '#test' as shown :
$('#test').click(function(){
alert('here');
});
Now your complete jquery code is as shown :
<script>
$(document).ready(function () {
$('#test').click(); //or $('#test').trigger('click');
$('#test').click(function(e){
e.preventDefault();
alert('here');
window.location.href = $(this).attr('href'); //redirect to specified href
});
});
</script>
Your #test link should be bound to a function, eg:
$(document).ready(function () {
//do something on test click
$('#test').on("click", alert());
//click test
$('#test').click();
});
http://jsfiddle.net/ub8unn2b/
Here click event is triggered i.e. click event is fired on page load but you can not load href by just triggering the click event,for that you can use
window.location.href = "http://www.google.com";

Working with dynamic jQuery

I was wondering how to make this trigger work as I've tried all I can, but can't seem to find out the problem.
HTML
<div id="testFunc">Change AHref Class</div>
test
JavaScript
$(function () {
$("#testFunc").click(function () {
$('#testLink').removeClass("button");
$('#testLink').addClass("button2");
return false;
});
});
$(function () {
$(".button2").click(function () {
alert('test');
return false;
});
});
Somehow, the upon triggering testFunc which changes the source dynamically which causes the a href class to change from button to button2, it doesn't seem to register when i use button2 click.
Is there anyway to solve this?
Thanks!
Try .on()
Use Event Delegation.
$(document).on('click','.button2',function(){ code here });
Syntax
$( elements ).on( events, selector, data, handler );
Demo Working Fiddle , Problem Fiddle

Image not clickable after loaded via AJAX

I have a set of images that are loaded via jQuery AJAX. For some reason, my click handler won't trigger when it is clicked.
JavaScript:
$(document).ready(function()
{
$('img.delete_related_sub').click(function()
{
alert('testing');
});
//I added this part to test, because the above wasn't working...
$(document).click(function(event)
{
alert(event.target.tagName+' '+event.target.className);
});
});
HTML:
<img data-rsid="2" class="delete_related_sub" src="image.png" />
So my 2nd click handler alerts me with "IMG delete_related_sub". But the first one isn't triggered. The is actually in a table that is actually in a pane run by bootstrap tabs, not sure if that'd actually help though.
Try it like this
$(document).on('click', 'img.delete_related_sub', function() {
alert('testing');
});
Just replace document with a static parent of your image.
Use this:
$("body").on('click', 'img.delete_related_sub', function() {
alert('testing');
});
Or, in the success: give this:
$('img.delete_related_sub').click(function() {
alert('testing');
});
Because the line to bind the event runs before the element is added, try using
$(parent).on('click', 'img.delete_related_sub', function() {});
where the parent is a static element that will be there for sure. This works because the event is bound to an element that actually exists, then checks to match your selector. See .on() for more details.
Something like
$(document).on('click', 'img.delete_related_sub', function() {});
would work fine.
$('.delete_related_sub').live("click", function()
{
alert('testing');
});
Use live event to listen clicks

I'm having a jQuery onclick issue

So I'm going to explain this with an example.
I have a "like" button (class: .like) for my feed or stream. When the user clicks it ( using $(".like") ), it ajaxes it's way to refreshless insert the like into the database (using jQuery).
When it's inserted, I change the text to "Unlike" and the class to ".unlike".
However, when a user reclicks it, it just goes through the same function again, instead of going to the $(".unline").click function. Do I have to "update" the script or something?
For example:
$(".like").click(function(){
alert("Like!");
$(this).attr("class", "unlike");
});
$(".unlike").click(function(){
alert("Unlike!");
$(this).attr("class", "like");
});
The problem is that it won't to the unlike function, it will just repeat the like function even though the attribute is changed.
That is because the "unlike" attr. hasn't been added to the dom when the script loaded. Try this:
<body>
<div class="like_it_or_not">
HELLO!
</div>
</body>
And the JS
$("body").on('click','.like_it_or_not', function(){
$(this).toggleClass('like', 'unlike');
if ($(this).hasClass('like')) {
alert('like');
} else if ($(this).hasClass('unlike')) {
alert('unlike');
}
});
If you don’t want to delegate your click event (which is over-engineering IMO), do a check in the handler:
$(".like").click(function(){
alert( $(this).hasClass('unlike') ? 'unlike' : 'like' );
$(this).toggleClass("unlike like");
});
http://jsfiddle.net/NScyM/
It should check for the 'unlike' class each time you click and toggle classes as expected.
The event binding occurs when you assign run the above code. You have to rebind the event every time, or, better yet, use event delegation:
$(document)on("click",".like",function(){
alert("Like!");
$(this).addClass("unlike");
$(this).removeClass("like");
});
$(document)on("click",".unlike",function(){
alert("Unike!");
$(this).addClass("like");
$(this).removeClass("unlike");
});
I think you will have to use live() or on() to make this work:
$(".like").live("click", function() {
$(this).removeClass("like").addClass("unlike");
});
$(".unlike").live("click", function() {
$(this).removeClass("unlike").addClass("like");
});
Try this one
$(".like").click(function(){
alert("Like!");
$(this).removeClass("like");
$(this).attr("class", "unlike");
});
$(".unlike").click(function(){
alert("Unlike!");
$(this).removeClass("unlike");
$(this).attr("class", "like");
});
To keep my code clean on stuff like this, I assign a class that never changes and tie the click event to that. The styling classes simply act as CSS changes. For instance:
<button class="vote like">button text</button>
$('.vote').click(function () {
var alertText = ($(this).hasClass('like')) ? 'Like!' : 'Unlike!';
alert(alertText);
$(this).toggleClass('like').toggleClass('unlike');
});
Try this
$(document).on('click', '.like', function(){
alert("Like!");
$(this).html('Unlike').removeClass("like").addClass("unlike");
});
$(document).on('click', '.unlike', function(){
alert("Unlike!");
$(this).html('Like').removeClass("unlike").addClass("like");
});
DEMO.
The unlike click event handler has not been associated with the new item. If you're going to be changing the class dynamically like that you're going to want to look at the (jQuery on handler)[http://api.jquery.com/on/]
$(document).on('click',".like", function(){
alert("Like!");
$(this).addClass("unlike").removeClass('like');
});
$(document).on('click',".unlike",function(){
alert("Unlike!");
$(this).addClass("like").removeClass('unlike');
});

jQuery function not binding to newly added dom elements

Here's index.html:
<head>
<script type="text/javascript" src="https://ajax.googleapis.com/ajax/libs/jquery/1.5.2/jquery.min.js"></script>
<script type="text/javascript">
$(document).ready(function() {
$('.btn_test').click(function() { alert('test'); });
});
function add(){
$('body').append('<a href=\'javascript:;\' class=\'btn_test\'>test</a>');
}
</script>
</head>
<body>
test1
add
</body>
If I click on test1 link, it shows alert('test'), but if I click on add link then click on test, it doesn't show anything.
Could you explain it?
For users coming to this question after 2011, there is a new proper way to do this:
$(document).on('click', '.btn_test', function() { alert('test'); });
This is as of jQuery 1.7.
For more information, see Direct and delegated events
You need to use a "live" click listener because initially only the single element will exist.
$('.btn_test').live("click", function() {
alert('test');
});
Update: Since live is deprecated, you should use "on()":
$(".btn_test").on("click", function(){
alert("test");
});
http://api.jquery.com/on/
I have same problem like question I was just near to pulling my hair then i got the solution.
I was using different syntax
$(".innerImage").on("click", function(){
alert("test");
});
it was not working for me (innerImage is dynamically created dom)
Now I'm using
$(document).on('click', '.innerImage', function() { alert('test'); });
http://jsfiddle.net/SDJEp/2/
thanks #Moshe Katz
.click binds to what is presently visible to jQuery. You need to use .live:
$('.btn_test').live('click', function() { alert('test'); });
Use Jquery live instead. Here is the help page for it http://api.jquery.com/live/
$('.btn_test').live(function() { alert('test'); });
Edit: live() is deprecated and you should use on() instead.
$(".btn_test").on("click", function(){
alert("test");
});
This is because you click event is only bound to the existing element at the time of binding. You need to use live or delegate which will bind the event to existing and future elements on the page.
$('.btn_test').live("click", function() { alert('test'); });
Jquery Live
you need live listener instead of click:
$('.btn_test').live('click', function() {
alert('test');
});
The reason being is that the click only assigns the listener to elements when the page is loading. Any new elements added will not have this listener on them. Live adds the click listener to element when the page loads and when they are added afterwards
When the document loads you add event listeners to each matching class to listen for the click event on those elements. The same listener is not automatically added to elements that you add to the Dom later.
Because the event is tied to each matching element in the document ready. Any new elements added do NOT automatically have the same events tied to them.
You will have to manually bind the event to any new element, after it is added, or use the live listener.
$('.btn_test').click
will add the handler for elements which are available on the page (at this point 'test' does not exist!)
you have to either manually add a click handler for this element when you do append, or use a live event handler which will work for every element even if you create it later..
$('.btn_test').live(function() { alert('test'); });
After jquery 1.7 on method can be used and it really works nice
<!DOCTYPE html>
<html>
<head>
<script src="http://ajax.googleapis.com/ajax/libs/jquery/1.10.1/jquery.min.js">
</script>
<script>
$(document).ready(function(){
$("p").on("click",function(){
alert("The paragraph was clicked.");
$("body").append("<p id='new'>Now click on this paragraph</p>");
});
$(document).on("click","#new",function(){
alert("On really works.");
});
});
</script>
</head>
<body>
<p>Click this paragraph.</p>
</body>
</html>
see it in action
http://jsfiddle.net/rahulchaturvedie/CzR6n/
Or just run the script at the end of your page
You need to add a proper button click function to give a proper result
$("#btn1").live(function() { alert("test"); });

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