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CSS selector for the next element of an element which fires onclick?

I have an element which listens to the onclick event. It calls a function once it was clicked. After that element is a < dd > which I want to select in a CSS selector. The element which is clicked, is a < select >. How would I do that?
This is the HTML:
<select onclick="myFunction();">...</select>
<dd>...</dd>
function myFunction() {
// What do I have to write for the ??????
$$('?????? dd').toggle();
}
Note: There are many of those select/dd combination, so I really have to get the next dd after the firing element.

The minimal change is: Pass this into your function:
<select onclick="myFunction(this);">...</select>
...and then:
function myFunction(select) {
$(select).next().toggle();
}
$ enhances the element, then you can use next to move to the next element. If you like, you can use .next('dd'), but in your case the dd is the next element.
That still uses onxyz attributes, which is a bit old-hat. You might consider hooking things up via observe instead.

I am guessing you mean this:
this.next("dd");
(specifying dd so when there's an error in the mark up, no other element is selected)
If you are trying CSS selectors only, try the following:
$("select + dd").toggle();
Note: this will toggle all dds that follow a select.
Note 2: apparently this does not work in Prototype but it does work in jQuery.
See T.J.Crowder's comment:
[This doesn't work in Prototype] because $ in Prototype looks up elements by ID. $$ is more like
jQuery's $, but what it returns doesn't do set-based operations like
jQuery does (or rather, not the same set-based operations as the ops
you can do on individual elements; you have to use invoke).
next() works on both jQuery as Prototype.

Use:
$(this).next("dd").toggle(); --> this is Jquery
$(element).next("dd").toggle();
see the link Element.next

<select>...</select>
<dd>...</dd>
$('select').change(function(){
$(this).next("dd").toggle();
});

Better use unobtrusive javascript, so your js is better coupled from html markup.
HTML:
<select><option value="test">Test</option></select>
<dd>Test</dd>
JS:
//Event.observe(window, "load", function() {
document.observe('dom:loaded', function() {
$$('select')[0].observe('click', function(event) {
var next = event.element().next();
next.toggle();
});
});
JSFiddle

jQuery, Add elements to the set of matched element using string and variable

I have a click event and I want to add a class to the current element clicked plus an other element and I want to do that in one line.
I have tried something like
JS file
$('div').click(function(){
$(this, 'span').css('background','yellow');
// could usethe following way but it's not DRY
// $(this).css('background','yellow');
// $('span').css('background','yellow');
})​;
HTML file
<div>
div
</div>
<span>
span
</span>​
Here is a fiddle for exemple
But it doesn't works so how can I do without repeating the css method.

You can use .add(selector) method like so:
$(this).add('span').css('background','yellow');

You can add the <span> elements to the $(this) jQuery instance:
$(this).add( $('span') ).css('background', 'yellow');
or even:
$(this).add('span').css('background', 'yellow');
http://jsfiddle.net/Hhqc8/7/

Try siblings():
$('div').click(function(){
$(this).siblings('span').css('background','yellow');
})​
Example:
http://jsfiddle.net/Hhqc8/6/

Combine after() and slideDown()

I am adding an element on a certain condition. But I don't want it suddenly appear but rather would like to slide it down. Here's how I add it:
$('.myDiv').after('<div>added content</div>');
How do I combine it with slideDown?

Try this instead :
$(".myDiv").after("<div style='display:none;'>added content</div>");
$(".myDiv").next("div").slideDown();
Good Luck !!

Try this out:
$('.myDiv').after('<div style="display:none">added content</div>').next().slideDown();

You need to use .next() on the div to which it is attached because .after()... adds the element as a sibling to the div to which it is added
Try this
$('.myDiv').after('<div style="display:none;" class="newDiv">New Content</div>');
$('.myDiv').next('.newDiv').slideDown();

first make sure the new content that you input is hidden using .newdiv{display:none;} either in your css file or inline code like: <div style="display:none;">
then use a callback function to only start after the code was inserted in the document when you used the after() method.
$('.myDiv').after('<div class="newdiv">added content</div>', function(){
$('.newdiv').slideDown();
});

jQuery toggle();

I am loading data dynamically by AJAX into a cluetip (http://plugins.learningjquery.com/cluetip/#).
I want to toggle the results from a link like so:
$(document).ready(function() {
$("#calendarLink").live("click",( function() {
$("#result").toggle();
}));
});
For some reason the above will not work. Can you suggest an alternative?

Couple of questions/points
Do you really need to use .live() You're using an ID selector, so there should only ever be one of these.
Also, you have an extra set of brakets. Probably not a problem, but you could remove them:
$(document).ready(function() {
$("#calendarLink").click( function() {
$("#result").toggle();
});
});

Perhaps the toggle() function isn't be used properly?
See here http://api.jquery.com/toggle/
I'm not sure if this is new functionality only for jQuery 1.4 but it appears the toggle function requires parameters.

The following code is correct (demo online - http://jsbin.com/ehate/edit):
$("#calendarLink").live("click", function(e){
$("#result").toggle();
});
You use $.live() only if #calendarLink will be added dynamically later. If it isn't, use a regular click:
$("#calendarLink").click(function(e){
$("#result").toggle();
});
If this is not working for you, be sure to check your #calendarLink and #result elements in your HTML. Make sure the ID values are correct. Mainly, be sure your casing is correct.

Two elements in the same page can't have the same id.
u used
$("#result").toggle();
'I want to toggle the results from a link ...'
So the result elements should have the same class , not id.
The code should be :
$(".result").toggle();
'#' changed into '.'

How to clear all <div>s’ contents inside a parent <div>?

I have a div <div id="masterdiv"> which has several child <div>s.
Example:
<div id="masterdiv">
<div id="childdiv1" />
<div id="childdiv2" />
<div id="childdiv3" />
</div>
How to clear the contents of all child <div>s inside the master <div> using jQuery?

jQuery's empty() function does just that:
$('#masterdiv').empty();
clears the master div.
$('#masterdiv div').empty();
clears all the child divs, but leaves the master intact.

jQuery('#masterdiv div').html('');

Use jQuery's CSS selector syntax to select all div elements inside the element with id masterdiv. Then call empty() to clear the contents.
$('#masterdiv div').empty();
Using text('') or html('') will cause some string parsing to take place, which generally is a bad idea when working with the DOM. Try and use DOM manipulation methods that do not involve string representations of DOM objects wherever possible.

I know this is a jQuery related question, but I believe someone might get here expecting a pure Javascript solution. So, if you were trying to do this using js, you could use the innerHTML property and set it to an empty string.
document.getElementById('masterdiv').innerHTML = '';

jQuery recommend you use ".empty()",".remove()",".detach()"
if you needed delete all element in element, use this code :
$('#target_id').empty();
if you needed delete all element, Use this code:
$('#target_id').remove();
i and jQuery group not recommend for use SET FUNCTION like .html() .attr() .text() , what is that? it's IF YOU WANT TO SET ANYTHING YOU NEED
ref :https://learn.jquery.com/using-jquery-core/manipulating-elements/

If all the divs inside that masterdiv needs to be cleared, it this.
$('#masterdiv div').html('');
else, you need to iterate on all the div children of #masterdiv, and check if the id starts with childdiv.
$('#masterdiv div').each(
function(element){
if(element.attr('id').substr(0, 8) == "childdiv")
{
element.html('');
}
}
);

The better way is :
$( ".masterdiv" ).empty();

$("#masterdiv div").text("");

$("#masterdiv > *").text("")
or
$("#masterdiv").children().text("")

$('#div_id').empty();
or
$('.div_class').empty();
Works Fine to remove contents inside a div

You can use .empty() function to clear all the child elements
$(document).ready(function () {
$("#button").click(function () {
//only the content inside of the element will be deleted
$("#masterdiv").empty();
});
});
To see the comparison between jquery .empty(), .hide(), .remove() and .detach() follow here http://www.voidtricks.com/jquery-empty-hide-remove-detach/

When you are appending data into div by id using any service or database, first try it empty, like this:
var json = jsonParse(data.d);
$('#divname').empty();

$("#masterdiv div[id^='childdiv']").each(function(el){$(el).empty();});
or
$("#masterdiv").find("div[id^='childdiv']").each(function(el){$(el).empty();});

try them if it help.
$('.div_parent .div_child').empty();
$('#div_parent #div_child').empty();