We Keep Coding

Two divs clicked at the same time (css)

Let's say I have two divs:
<div id="div1">Click here</div>
<div id="div2">Click here</div>
Is there a way to stack them one upon the other so that when I click one I click both. Preferably with css.
Any solution is welcome.

You cannot trigger events with css.
You can with js:
document.getElementById('div1').addEventListener('click', () => { // on click in div1
document.getElementById('div2').click(); // make div2 clicked
});

You can add this to your script file. Clicking is handled by JavaScript, not by CSS. Even if you place one element over the other, you will be unable to click both at once.
var x = document. getElementsByTagName("div");
for (var i = 0; i < x.length; i++) {
x[i].addEventListener("click", function() {
// Whatever you want to do
});
}

You could have them both call the same function when clicked.
document.getElementById('div1').addEventListener('click', onClick, false);
document.getElementById('div2').addEventListener('click', onClick, false);
function onClick() {
// Do something.
}

When one is clicked, disable the other

So I have a mini slide menu in my website there is a menu you can choose what you want to read. There are points to click, when u clicked it the point get a red background.
But there is a problem.
When i click one point and then an other point the first clicked point have to lose his background.
Here is my HTML:
<div id="slide_button" onClick="clicked(this);"><dir class="button_1"></dir></div>
<div id="slide_button" onClick="clicked(this);"><dir class="button_2"></dir></div>
<div id="slide_button" onClick="clicked(this);"><dir class="button_3"></dir></div>
<div id="slide_button" onClick="clicked(this);"><dir class="button_4"></dir></div>
<div id="slide_button" onClick="clicked(this);"><dir class="button_5"></dir></div>
Here is my JS:
function clicked(slide_button) {
slide_button.getElementsByTagName("dir")[0].style.backgroundColor="red";
}
HERE IS AN EXAMPLE ON FIDDLE.
My "QUESTION IS" what i have to do to solve that?
What should I pay attention?

First you need to fix your HTML becaue your id values aren't unique. In fact, you don't even need id values, so you should use "slide_button" as a class. You can then use it to select all the buttons:
<div onClick="clicked(this);" class="slide_button"><dir></dir></div>
<div onClick="clicked(this);" class="slide_button"><dir></dir></div>
<div onClick="clicked(this);" class="slide_button"><dir></dir></div>
<div onClick="clicked(this);" class="slide_button"><dir></dir></div>
<div onClick="clicked(this);" class="slide_button"><dir></dir></div>
The CSS needs to be changed now so "slide_button" is a class selector, instead of an id selector:
.slide_button {
display: inline-block;
}
As for clearing the background, clear all of them before coloring the selected one red:
function clicked(slide_button) {
var buttons = document.getElementsByClassName('slide_button');
for(var i = 0; i < buttons.length; i++) {
buttons[i].getElementsByTagName('dir')[0].style.backgroundColor = '';
}
slide_button.getElementsByTagName('dir')[0].style.backgroundColor = 'red';
}
jsfiddle
This uses just JavaScript with no JQuery, but if you are using JQuery, you might as well use it here. The code is a lot shorter and easier to follow.
Here's a JQuery version:
$(function() {
$('.slide_button').click(function() {
var $button = $(this);
$button.children(':first').css({ backgroundColor: 'red' });
$button.siblings().children(':first').css({ backgroundColor: '' });
});
});
Note: This registers a click-handler, so you can get rid of the "onclick" attirbutes.
jsfiddle

You have to select all other points and set their background to none.
Or remeber which point is selected and on select another just remove background on last and remeber current point, then set its background to red.
See fiddle: http://fiddle.jshell.net/399Dm/5/

At first id should be unique per element.
<div class="slide_button"><dir class="button"></dir></div>
<div class="slide_button"><dir class="button"></dir></div>
<div class="slide_button"><dir class="button"></dir></div>
<div class="slide_button"><dir class="button"></dir></div>
<div class="slide_button"><dir class="button"></dir></div>
Second, you should store reference of clicked element if you want later remove background color, and instead of inline event handlers or binding all elements would be better if you use event delegation.
Demonstration
(function () {
"use strict";
// getting parent node of divs, due to bind click event. then
var ele = document.querySelector(".slide_button").parentNode,
prev = null; // store previous clicked element
ele.addEventListener("click", clickHandler); // event handler.
function clickHandler(e) {
var t = e.target; // get target of clicked element
// filter by target node name and class. edit: removed class checking
if (t.nodeName.toLowerCase() === "dir") {
// checking value of prev !== null and it's not same element.
if (prev && prev !== t) {
prev.style.backgroundColor = "";
}
prev = t; // store clicked element
t.style.backgroundColor = "red";
}
}
}());

I have fixed the fiddle so that it works hopefully as you plan.
http://jsfiddle.net/399Dm/8/ There you go!
var forEach = function(ctn, callback){
return Array.prototype.forEach.call(ctn, callback);
}
function clear(element, index, array) {
element.getElementsByTagName("dir")[0].style.backgroundColor="";
}
function clicked(slide_button) {
forEach(document.getElementsByClassName("slide_button"), clear);
//.style.backgroundColor="";
slide_button.getElementsByTagName("dir")[0].style.backgroundColor="red";
}

I had a slightly different method than #atlavis but a similar result.
http://fiddle.jshell.net/2AGJQ/

JSFIDDLE DEMO
jQuery
$('.slide_button').click(function(){
$('.slide_button dir').css("background-color", "inherit");
$(this).find('dir').css("background-color", "red");
});
HTML - Your markup is invalid because you have duplicate ids. Make them classes as below instead.
<div class="slide_button" >
<dir class="button_1"></dir>
</div>
<div class="slide_button">
<dir class="button_2"></dir>
</div>
<div class="slide_button">
<dir class="button_3"></dir>
</div>
<div class="slide_button">
<dir class="button_4"></dir>
</div>
<div class="slide_button">
<dir class="button_5"></dir>
</div>
CSS change
.slide_button {
display: inline-block;
}

If you can look at the following jsfiddle, I used jQuery to get what you want.

How to perform an automated onclick() at a certain element if the ID is always changing?

In Javascript, I'm trying to create a user script that will automatically click on a 'Blue Button'. Normally, I would do this:
var bluebutton = "document.getElementById("blue_button")"
if (bluebutton) {
bluebutton.onclick();
}
But NOW, the blue button does not have its own obvious ID. It's ID is randomized, and could be either button1, button2, or button3.
Here's the HTML that I'm talking about:
<div class="button_slot">
<div id="button1" style="cursor:pointer; padding-left:30px" onclick="buttonsubmit('button1')" onmouseover="infopane.display('Blue Button','I'm a blue button!')" onmouseout="infopane.clear()">
<div class="button_slot">
<div id="button2" style="cursor:pointer; padding-left:30px" onclick="buttonsubmit('button2')" onmouseover="infopane.display('Red Button','I'm a red button!')" onmouseout="infopane.clear()">
<div class="button_slot">
<div id="button3" style="cursor:pointer; padding-left:30px" onclick="buttonsubmit('button3')" onmouseover="infopane.display('Yellow Button','I'm a yellow button!')" onmouseout="infopane.clear()">
After a bit of reading, I've concluded that the only way to direct my onclick() to the correct element/string is by using ".toString().match(name)" as shown below:
function clickbutton(name) {
var button_list = document.querySelectorAll('.button_slot > div');
for (var i=0; i<button_list.length; i++) {
var button = button_list[i];
if (button.onmouseover && button.onmouseover.toString().match(name)) {
button.onmouseover();
button.onclick();
break;
}
}
}
clickbutton('Blue');
(note: sometimes I use clickbutton('Red'); or clickbutton('Yellow'); just to experiemen)
Now here's the problem. This method works so horribly... Sometimes, my script completely misses the button (as in, nothing gets clicked) EVEN THOUGH there is definitely a string with the word 'Blue' in it.
If someone could identify what I'm doing wrong, or perhaps even suggest a more effective method, I would appreciate it so much! Thank you!

First, I'm not sure why you can't give each button an ID which corresponds to it's color, because I believe that would be the easiest way to achieve this. But assuming that, for some reason, your button ID's must be randomized (or for that matter, maybe they don't even have an ID).
In this case, what I would do is give each button a data-button-type attribute, for instance:
<div data-button-type="Blue" id="..." style="..." onclick="..." onmouseover="..." onmouseout="...">
Now, I can check the attribute when looking for which button to click, for example:
function clickbutton(name) {
var button_list = document.querySelectorAll('.button_slot > div');
for (var i=0; i<button_list.length; i++) {
var button = button_list[i];
if (button.getAttribute('data-button-type') == name) {
button.onmouseover();
button.onclick();
break;
}
}
}
clickbutton('Blue');

I'm pretty sure you want to use indexOf although I think its most likely a timing issue.
First just try invoking it in a setTimeout function, so the document has (probably) loaded fully when you execute. It would explain it sometimes working sometimes not.
setTimeout(function(){ clickbutton(name) }, 3000);
I would do:
var clickButton = function(name){
var button_list = document.querySelectorAll('.button_slot > div');
for(var i = 0; i < button_list.length; i++){
var button = button_list[i];
if(button.getAttribute('onmouseover').indexOf(name) !== -1){
button.onclick.apply(); // They seem to have parameters in your example?
}
break;
}
}
setTimeout(function(){ clickButton('blah') }, 3000);
As a first attempt...

How to Reduce Size of This jQuery Script and Make it More Flexible?

I just created script that shows/hides (toggles) block of HTML. There are four buttons that each can toggle its HTML block. When any HTML block is opened, but user has been clicked on other button than that HTML block's associated button... it hides that HTML block and shows new one.
Here is what I have at the moment:
$('.btn_add_event').click( function() {
$('.block_link, .block_photos, .block_videos').hide();
$('.block_event').toggle();
});
$('.btn_add_link').click( function() {
$('.block_event, .block_photos, .block_videos').hide();
$('.block_link').toggle();
});
$('.btn_add_photos').click( function() {
$('.block_event, .block_link, .block_videos').hide();
$('.block_photos').toggle();
});
$('.btn_add_videos').click( function() {
$('.block_event, .block_link, .block_photos').hide();
$('.block_videos').toggle();
});
Any ideas how to reduce code size? Also, this script isn't very flexible. Imagine to add two new buttons and blocks.

like Sam said, I would use a class that all the blocks share, so you never have to alter that code. Secondly, you can try 'traversing' to the closest block, therefore avoiding it's name. That approach is better than hard coding each specific block, but if the html dom tree changes you will need to refactor. Last, but best, you can pass in the class name desired block as a variable to the function. Below is something you can copy paste that is close to what you started with.
$('.myAddButtonClass').click( function() {
$('.mySharedBlockClass').filter(':visible').hide();
//find a good way to 'traverse' to your desired block, or name it specifically for now.
//$(this).closest(".mySharedBlockClass").show() complete guess
$('.specificBlockClass').show();
});

I kept reading this "When any HTML block is opened, but user has been clicked on other button than that HTML block's associated button" thinking that my eyes were failing me when Its just bad English.
If you want to make it more dynamic, what you can do is add a common class keyword. Then
when the click event is raise. You can have it loop though all the classes that have the
keyword and have it hide them all (except the current one that was clicked) and then show the current one by using the 'this' keyword.

you can refer below link,
http://chandreshmaheshwari.wordpress.com/2011/05/24/show-hide-div-content-using-jquery/
call function showSlidingDiv() onclick event and pass your button class dynamically.
This may be useful.
Thanks.

try this
$('input[type=button]').click( function() {
$('div[class^=block]').hide(); // I resumed html block is div
$(this).toggle();
});

Unfortunatly I couldn't test it, but if I can remember right following should work:
function toogleFunc(clickObject, toogleTarget, hideTarget)
{
$(clickObject).click(function()
{
$(hideTarget).hide();
$(toogleTarget).toggle();
});
}
And the call:
toogleFunc(
".btn_add_videos",
".block_videos",
".block_event, .block_link, .block_photos"
);
and so far

Assuming the buttons will only have one class each, something like this ought to work.
var classNames = [ 'btn_add_event', 'block_link', 'block_photos', 'block_videos' ];
var all = '.' + classNames.join(', .'); // generate a jquery format string for selection
$(all).click( function() {
var j = classNames.length;
while(j--){
if( this.className === classNames[j] ){
var others = classNames.splice(j, 1); // should leave all classes but the one on this button
$('.' + others.join(', .')).hide();
$('.' + classNames[j]).toggle();
}
}
}
All the buttons have the same handler. When the handler fires, it checks the sender for one of the classes in the list. If a class is found, it generates a jquery selection string from the remaining classes and hides them, and toggles the one found. You may have to do some checking to make sure the strings are generating correctly.

It depends by how your HTML is structured.
Supposing you've something like this
<div class="area">
<div class="one"></div>
<div class="two"></div>
<div class="three"></div>
</div>
...
<div class="sender">
<a class="one"></a>
<a class="two"></a>
<a class="three"></a>
</div>
You have a class shared by the sender and the target.
Your js would be like this:
$('.sender > a').click(function() {
var target = $(this).attr('class');
$('.area > .' + target).show().siblings().hide();
});
You show your real target and hide its siblings, which aren't needed.

If you put the class postfixes in an array, you can easily make this code more dynamic. This code assumed that it doesn't matter in which order toggle or hide are called. If it does matter, you can just remember the right classname inside the (inner) loop, and toggle that class after the loop.
The advantage to this approach is that you can extend the array with an exta class without needing to modifying the rest of the code.
var classes = new Array('videos', 'event', 'link', 'photos');
for (var i = 0; i < classes.length; ++i)
{
$('.btn_add_' + classes[i]).click(
function()
{
for (var j = 0; j < classes.length; ++j)
{
if (this.hasClass('btn_add_' + classes[j]))
{
$('.block_' + classes[j]).toggle();
}
else
{
$('.block_' + classes[j]).hide();
}
}
});
}
You could make this code more elegant by not assigning those elements classes like btn_add_event, but give them two classes: btn_add and event, or even resort to giving them id's. My solution is based on your description of your current html.

Here is what I think is a nice flexible and performant function. It assumes you can contain your links and html blocks in a parent, but otherwise it uses closures to precalculate the elements involved, so a click is super-fast.
<html>
<head>
<script type="text/javascript" src="http://ajax.googleapis.com/ajax/libs/jquery/1.6.2/jquery.min.js" ></script>
<script type="text/javascript">
// Enables show/hide functionality on click.
// The elements within 'container' matching the selector 'blocks' are hidden
// When elements within 'container' matching the selector 'clicker' are clicked
// their attribute with the name 'clickerAttr' is appended to the selector
// 'subject' to identify a target, usually one of the 'blocks'. All blocks
// except the target are hidden. The target is shown.
//
// Change clickerAttr from 'linkTarget' to 'id' if you want XHTML compliance
//
// container: grouping of related elements for which to enable this functionality
// clicker: selector to element type that when clicked triggers the show/hide functionality
// clickerAttr: name of the DOM attribute that will be used to adapt the 'subject' selector
// blocks: selector to the html blocks that will be shown or hidden when the clicker is clicked
// subject: root of the selector to be used to identify the one html block to be shown
//
function initToggle(container,clicker,clickerAttr,blocks,subject) {
$(container).each(
function(idx,instance) {
var containerElement = $(instance);
var containedBlocks = containerElement.find(blocks);
containerElement.find(clicker).each(function(idxC, instanceClicker) {
var tgtE = containerElement.find(subject+instanceClicker.getAttribute(clickerAttr));
var clickerBlocks = containedBlocks.not(tgtE);
$(instanceClicker).click(function(event) {
clickerBlocks.hide();
tgtE.toggle();
});
});
// initially cleared
containedBlocks.hide();
}
);
}
$(function() {
initToggle('.toggle','a.link','linkTarget','div.block','div.');
});
</script>
</head>
<body>
Example HTML block toggle:
<div class="toggle">
a <br />
b <br />
c <br />
<div class="A block"> A </div>
<div class="B block"> B </div>
<div class="C block"> C </div>
</div> <!-- toggle -->
This next one is not enabled, to show scoping.
<div class="toggle2">
a <br />
<div class="A block">A</div>
</div> <!-- toggle2 -->
This next one is enabled, to show use in multiple positions on a page, such as in a portlet library.
<div class="toggle">
a <br />
<div class="A block">A</div>
</div> <!-- toggle (2) -->
</body>
</html>

Javascript if else statement to hide and show div

Please refer to the following codes :
<div id="message-1" onclick="javascript:showresponddiv(this.id)>
</div>
<div id="respond-1" style="display:none;">
</div>
<div id="message-2" onclick="javascript:showresponddiv(this.id)>
</div>
<div id="respond-2" style="display:none;">
</div>
<script type="text/javascript">
function showresponddiv(messagedivid){
var responddivid = messagedivid.replace("message-", "respond-");
if (document.getElementById(responddivid).style.display=="none"){
document.getElementById(responddivid).style.display="inline";
} else {
document.getElementById(responddivid).style.display="none";
}
}
</script>
The codes above already success make the respond div appear when user click on message div. The respond div will disappear when user click on message div again. Now my question is how to make the respond div of 1st message disappear when user click on 2nd message to display the respond div of 2nd message?

You should give the "respond" divs a common class:
<div id="respond-1" class="response' style="display:none;"></div>
Then you can get all divs by using getElementsByTagName, compare the class and hide them on a match:
function hideAllResponses() {
var divs = document.getElementsByTagName('div');
for(var i = divs.length; i-- ;) {
var div = divs[i];
if(div.className === 'response') {
div.style.display = 'none';
}
}
}
We cannot use getElementsByClassName, because this method is not supported by IE8 and below. But of course this method can be extended to make use of it if it is supported (same for querySelectorAll). This is left as an exercise for the reader.
Further notes:
Adding javascript: to the click handler is syntactically not wrong but totally unnecessary. Just do:
onclick="showresponddiv(this.id)"
If you have to do a lot of DOM manipulation of this kind, you should have a look at a library such as jQuery which greatly simplify such tasks.
Update: If always only one response is shown and you are worried about speed, then store a reference to opened one:
var current = null;
function showresponddiv(messagedivid){
var id = messagedivid.replace("message-", "respond-"),
div = document.getElementById(id);
// hide previous one
if(current && current !== div) {
current.style.display = 'none';
}
if (div.style.display=="none"){
div.style.display="inline";
current = div;
}
else {
div.style.display="none";
}
}
Edit: Fixed logic. See a DEMO.

You can add some class to all divs with id="respond-"
e.g
<div id="respond-1" class="classname" style="display:none;"></div>
<div id="respond-2" class="classname" style="display:none;"></div>
Now at first row of your function "showresponddiv()" you should find all divs with class "classname" and hide them.
With jQuery it is simple code:
$(".classname").hide();
jQuery - is a Javascript Library that helps you to easy manipulate with DOM and provides cross-browser compatibility.
Also you can look to Sizzle - it is a JavaScript CSS selector engine used by jQuery for selecting DOM elements