Develop Reference

Element calling old action after class change [duplicate]

In my JSP page I added some links:
<a class="applicationdata" href="#" id="1">Organization Data</a>
<a class="applicationdata" href="#" id="2">Business Units</a>
<a class="applicationdata" href="#" id="6">Applications</a>
<a class="applicationdata" href="#" id="15">Data Entity</a>
It has a jQuery function registered for the click event:
$("a.applicationdata").click(function() {
var appid = $(this).attr("id");
$('#gentab a').addClass("tabclick");
$('#gentab a').attr('href', '#datacollector');
});
It will add a class, tabclick to <a> which is inside <li> with id="gentab". It is working fine. Here is my code for the <li>:
<li id="applndata"><a class="tabclick" href="#appdata" target="main">Application Data</a></li>
<li id="gentab">General</li>
Now I have a jQuery click handler for these links
$("a.tabclick").click(function() {
var liId = $(this).parent("li").attr("id");
alert(liId);
});
For the first link it is working fine. It is alerting the <li> id. But for the second <li>, where the class="tabclick" is been added by first jQuery is not working.
I tried $("a.tabclick").live("click", function(), but then the first link click event was also not working.

Since the class is added dynamically, you need to use event delegation to register the event handler
$(document).on('click', "a.tabclick", function() {
var liId = $(this).parent("li").attr("id");
alert(liId);
});

You should use the following:
$('#gentab').on('click', 'a.tabclick', function(event) {
event.preventDefault();
var liId = $(this).closest("li").attr("id");
alert(liId);
});
This will attach your event to any anchors within the #gentab element,
reducing the scope of having to check the whole document element tree and increasing efficiency.

.live() is deprecated.When you want to use for delegated elements then use .on() wiht the following syntax
$(document).on('click', "a.tabclick", function() {
This syntax will work for delegated events
.on()

Based on #Arun P Johny this is how you do it for an input:
<input type="button" class="btEdit" id="myButton1">
This is how I got it in jQuery:
$(document).on('click', "input.btEdit", function () {
var id = this.id;
console.log(id);
});
This will log on the console: myButton1.
As #Arun said you need to add the event dinamically, but in my case you don't need to call the parent first.
UPDATE
Though it would be better to say:
$(document).on('click', "input.btEdit", function () {
var id = $(this).id;
console.log(id);
});
Since this is JQuery's syntax, even though both will work.

on document ready event there is no a tag with class tabclick. so you have to bind click event dynamically when you are adding tabclick class. please this code:
$("a.applicationdata").click(function() {
var appid = $(this).attr("id");
$('#gentab a').addClass("tabclick")
.click(function() {
var liId = $(this).parent("li").attr("id");
alert(liId);
});
$('#gentab a').attr('href', '#datacollector');
});

Here is the another solution as well, the bind method.
$(document).bind('click', ".intro", function() {
var liId = $(this).parent("li").attr("id");
alert(liId);
});
Cheers :)

I Know this is an old topic...but none of the above helped me.
And after searching a lot and trying everything...I came up with this.
First remove the click code out of the $(document).ready part and put it in a separate section.
then put your click code in an $(function(){......}); code.
Like this:
<script>
$(function(){
//your click code
$("a.tabclick").on('click',function() {
//do something
});
});
</script>

Find value of multiple buttons with javascript

I need to have multiple buttons on page (created through a PHP loop) - there's not fixed number of buttons as there'll be one for each record displayed. I'd like to get the value of that button with javascript when it is clicked.
So far the html looks like:
<button id="update[0]" value="test">Update</button>
<button id="update[1]" value="test">Update</button>
<button id="update[2]" value="test">Update</button>
etc....
and my script is:
$(document).ready("#update").click(function() {
var updateId = $("#update").val
alert(updateId);
});
So far the script detects when any #update[] button is clicked but how do I know the index of the particular button in order to get the value (i.e. if #update[38] is clicked how do I know it's #update[38] so I can find the value of that particular button?
Thanks.

You do not want to chain off the document ready like you are as its returning the document.
$(document).ready("#update").click(function() {
So you are capturing the document.click not not button.click so when you reference $(this).val() you will get document.value which does not exist.
Should be:
$(document).ready(function () {
$("button").click(function () {
//no reason to create a jQuery object just use this.value
var updateId = this.value;
alert(updateId);
});
});
http://jsfiddle.net/SeanWessell/2Lf6c3fx/

Use the "this" key word.
$(document).ready("#update").click(function() {
var updateId = $(this).val();
alert(updateId);
});
The this keyword in javascript allows you to reference the particular instance of the object you are interacting with.
Also, add "()" to the end of val.

I believe you meant to use
var updateId = $("#update").val()
With jQuery you can use $(this).val()
You could also get the text of the button using .text()
With pure Javascript you could use .value if the button has a value attribute
See this: Javascript Get Element Value

I would suggest the following
<button id="0" class="updatebutton" value="test">Update</button>
<button id="1" class="updatebutton" value="test">Update</button>
<button id="2" class="updatebutton" value="test">Update</button>
Use a class to apply your click function.
$(document).ready(function () {
$("updatebutton").click(function () {
var updateId = this.id;
alert(updateId);
});
});
And use the id to specify the index of the button.

The trick is to give all your buttons the same class and then use $(this) to find out which button was clicked.
Once you know the button, then you can check for any of its attributes like id, value or name.
$(function() {
$(".xx").on("click", function(evt) {
var clicked_button = $(this);
alert(clicked_button.attr("value"));
});
});
<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.11.1/jquery.min.js"></script>
<button id="update_1" class="xx" value="test1">Button 1</button>
<button id="update_2" class="xx" value="test2">Button 2</button>
<button id="update_3" class="xx" value="test3">Button 3</button>

Hi there a few things wrong with your javascript there.
You are attaching onClick to the document! The function ready returns the document.
Wrong:
$(document).ready("#update").click(function() {
Right:
$(document).ready(function () { $(valid_selector).click...
You are attempting to refetch the button with $('#update'), which 1 doesn't fetch anything, and two if it did would return all of the buttons. So use $(this) in the scope of the click function instead to refer to the button clicked.
Here is your javascript corrected:
https://jsfiddle.net/ffkekpmh/
//When the document is ready call this function
$(document).ready(function () {
//Select all buttons whoes id starts with update
//https://api.jquery.com/category/selectors/attribute-selectors/
$('button[id^="update"]').click(function() {
//Store the id attribute from the clicked button
var updateId = $(this).attr("id");
//Store the value attribute from the clicked button
var value = $(this).attr("value");
alert("You clicked button:"+updateId+" with value: "+value);
});
});

How to decide which element is being clicked in jQuery?

I have more similar elements in HTML which are being added continously with PHP. my question is the following:
With jQuery, I would like to add a click event to each of these <div> elements. When any of them is being clicked it should display it's content. The problem is that I guess I need to use classes to specify which elements can be clickable. But in this case the application will not be able to decide which specific element is being clicked, right?
HTML:
<div class="test">1</div>
<div class="test">2</div>
<div class="test">3</div>
<div class="test">4</div>
<div class="test">5</div>
jQuery try:
$("test").on("click", function()
{
var data = ???
alert(data);
});
UPDATE - QUESTION 2:
What happens if I'm placing <a> tags between those divs, and I want to get their href value when the DIV is being clicked?
I always get an error when I try that with this.

this refers to the element triggering the event. Note that it is a regular js element, so you'll need to convert it to a jQuery object before you can use jQuery functions: $(this)
$(".test").on("click", function()
{
var data = $(this).text();
alert(data);
});

Like this:
$(".test").on("click", function(event)
{
var data = $(event.target);
alert(data.text());
});

this variable contains the reference of current item
$(document).ready(function() {
$(".test").click(function(event) {
var data = $(this).text();
alert(data);
});
})
;

The class selector in jquery is $(".ClassName") and to access the value, use $(this) as such:
$(".test").on("click", function(){
var data = $(this).text();
alert(data);
});

You can use this inside the function which mean clicked div
DEMO
$(".test").on("click", function () {
alert($(this).html());
});

Dynamic parameters in JQuery

I have function in which append method is taking a static parameter.
function toggle() {
$("#MS").append($('#hide'));
}
What i want is to pass the parameter dynamically from my Hyperlinks click event.
In above code that #MS is static which i want to pass dynamically
Code:
HTML
<div id="MS">
JP MORGAN<br>
</div>
I want to pass the argument from onclick to toggle method and that parameter will be used in the append method.
I have tried several combinations buut it didnt worked.
Please help..
My new code after changes
<script>
$(function() { // when the DOM is ready
var $hide = $('#hide').click(function(){
$(this).closest('div').hide();
});
$('a.toggle').click(function(e){
e.preventDefault();
$(this).parent().append($hide);
});
});
</script>
<div id="JP">
JP MORGAN<br>
</div>
still not working

Since you are using jQuery, you can add classes to your a elements and use parent method:
$(function() { // when the DOM is ready
var $hide = $('#hide').click(function(){
$(this).closest('div').hide();
});
$('a.toggle').click(function(e){
e.preventDefault();
$(this).parent().append($hide);
});
});

Retrieve the ID dynamically on the anchor's click event and pass that ID to the function:
$("a").on("click", function(e){
e.preventDefault();
$(this).append($('#hide'));
};

Pass value to function from <a> tag, not from button

Consider the following link and associated Javascript function:
<a class="someClass" href="#" onClick="someFunc('someVal'); return false;">Run someFunc</a>
function someFunc(val) {
doSomething(val);
}
I would prefer to refactor the link and Javascript function to support some additional functionality (the link is actually in a div returned by AJAX):
<a class="someClass" href="#" someAttribute="someVal">Run someFunc</a>
$(".someClass").click(function(e) {
e.preventDefault();
// How to get value of someAttribute?
doSomething(val);
});
How can I get the value of someAttribute? Thanks.

Use attr() method
$(".someClass").click(function(e) {
e.preventDefault();
// How to get value of someAttribute?
alert( $(this).attr('someAttribute'));
});
DEMO: http://jsfiddle.net/buC8k/
API refrence: http://api.jquery.com/attr/

The clicked element is this. You may use the attr function :
var someValue = $(this).attr('someAttribute');