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Javascript change div color on click once for each

How would I change the colour of a divs background for multiple divs, but once. So if you click on div 1 the colour changes to blue, click on div 2 the div1 colour goes back to default and div2 goes to blue? Kind of how facebook chat tabs work with the top header

You can do like that. Just add a class like "active" to the clicked element and remove it from others
var menu = document.querySelector("#menu");
for(var i = 0; i < menu.children.length; i++){
menu.children[i].onclick = function (event){
document.querySelector(".active").className = "";
event.target.className = "active";
}
}
https://jsfiddle.net/jc61tgns/

What I would adivce you to do, is the following :
create a CSS class, such as .active { background-color: blue; }
use JavaScript to add/remove .active from divs.
For instance, in pure JavaScript :
const divs = document.querySelector('#root > div');
divs.on('click', function(e) {
// Toggle off all divs.
divs.forEach(d => d.classList.remove('active'));
// Toggle on clicked div.
e.target.classList.add('active');
});
Doc : classtList
Cheers,
Guillaume.

you can give a id to your div tag and create a onclick event like <div id="div1" onclick="changebg()">
Inside changebg() you can write your code to change the background color

JQuery div display, collapse

I am not a jquery specialist but I have managed to make this script working on my website:
<script>
$(document).ready(function() {
$('#open_#div_hidden_1').click(function() {
if ($('#div_hidden_1').is(':hidden')) {
$('#div_hidden_1').show(500);
$('#div_hidden_1').hide(500);
} else {
$('#div_hidden_1').hide(500);
}
});
});
</script>
Basicly it displays and collapses a div (distinguished by id), I have many divs on my wbesite that are displayed this way(its an inline code, for each div separate code) What I would like to do with it is to close all other divs (e.g. from the same class) when I open another one. Could please someone help me to modify this code so that it will collapse all other divs form the same class?

If you have multiple DIVs and class like below,
<div class="divClass">A</div>
<div class="divClass">B</div>
<div class="divClass">C</div>
then, you need to use like,
$(".divClass").click(function(){
$(".divClass").hide(500); //hiding all the element with divClass
$(this).show(500); // showing up the clicked element.
});

This might be able to you
Reference
Just a part of code
$(".header").click(function () {
$(".header").not(this).text('Expand').next().slideUp();
$header = $(this);
//getting the next element
$content = $header.next();
//open up the content needed - toggle the slide- if visible, slide up, if not slidedown.
$content.slideToggle(500, function () {
//execute this after slideToggle is done
//change text of header based on visibility of content div
$header.text(function () {
//change text based on condition
return $content.is(":visible") ? "Collapse" : "Expand";
});
});
});

How to show button on div mouse hover

i want to show button on div hover.
when i hover mouse on div then button show otherwise hide.
my button in divbutton div.
html
<div class="divbutton">
<button type="button" style="display: none;">Hello</button>
</div>
when I hover mouse on div it should show but how to do that i do not know.
when I remove mouse button again hide.
Thank you.

Use the below selector
button {
display: none; /* Hide button */
}
.divbutton:hover button {
display: block; /* On :hover of div show button */
}
Demo
Also make sure you assign some height or min-height to your div element, else it will be 0 as it doesn't hold any content. Also, don't use display: none; as inline style, as inline styles have highest specificity, and hence, you will be forced to use !important which is bad.
In the above example am using button {/*Styles*/} but that is a general element selector, so make sure you define a class to your button element.

Use following jQuery to perform your task.
Here is a jsfiddle demo
$(document).ready(function () {
$(document).on('mouseenter', '.divbutton', function () {
$(this).find(":button").show();
}).on('mouseleave', '.divbutton', function () {
$(this).find(":button").hide();
});
});

Mr. Alien's answer gives a nice CSS implementation. If you need in jquery, use this -
$( ".divbutton" )
.on("mouseenter", function() {
$("button").show();
})
.on("mouseleave", function() {
$("button").hide();
});
In pure JavaScript -
var buttonDiv = document.getElementsByClassName("divbutton")[0]; //better use some id and then use getElementById
buttonDiv.onmouseover = function() {
document.getElementById("YourButtonId").style.display = 'block';
}
buttonDiv.onmouseout = function() {
document.getElementById("YourButtonId").style.display = 'none';
}

Try this:
$('.divbutton').mouseover(function(event)
{
$(this).find('button').show();
});
$('.divbutton').mouseout(function(event)
{
$(this).find('button').hide();
});

first hide the button with transform property.
button{
transform:translate(100%,100%)
//this will move the button right and buttom
}
then when you hover on div, you bring it back
.divbutton:hover button{
//class name should have been divButton
transform:translate(0,0)}

jQuery - have different events if element is on the same row

I have a page with a row of boxes that are responsive........
so the smaller you resize the window the amount of boxes on each row lessens
heres a fiddle to show you whats going on
http://jsfiddle.net/abtPH/6/
Right now the behavior is......if you click on a box then a div appears under it.....if you click on the next box the div slides up a bit then slides down revealing the new content...
I want it so that if the box is on the same row and the user clicks the next one it does not slide up then down but fades the content in
I only want it to slide up when the box is on a different row...like underneath
heres my jquery so far
$('li').on('click', function(e){
$(this).siblings('.active').toggleClass('active', 400).find('.outer').slideToggle();
$(this).find('.outer').slideToggle();
$(this).toggleClass('active', 400);
});

The trick is detecting what is on the same line. For that I think the position() function is what you need. When a list item is clicked, check to see if there is an active one already, if so, check to see if the current and active items have the same top value. If they do crossfade otherwise toggle.
$('li').on('click', function(e){
var active = $(this).siblings('.active');
var posTop = ($(this).position()).top;
if (active.length > 0) {
var activeTop = (active.position()).top;
if (activeTop == posTop) {
active.toggleClass('active', 400).find('.outer').fadeOut('slow');
$(this).find('.outer').fadeIn('slow');
} else {
$(this).siblings('.active').toggleClass('active', 400).find('.outer').slideToggle();
$(this).find('.outer').slideToggle();
}
} else {
$(this).find('.outer').slideToggle();
}
$(this).toggleClass('active', 400);
});
jsFiddle

more concise jquery for multi button controlling visibility of same div

I have 3 buttons that control the visibility of 1 div.
we want to do following to div:
show the first time any of three buttons are clicked
show if button clicked is different to previously button click
hide if button clicked is the same as previous clicked and if div is currently visible
show if button clicked is the same as previous clicked and if div is currently invisible
currently I have this:
//$('#alert_area') = target div
$button = $('.button')
if ($button.attr('id') != $('#alert_area').attr('showing')){
$('#alert_area').show()
}else{
if ($('#alert_area').is(":visible")){
$('#alert_area').hide();
}else{
$('#alert_area').show();
}
}
$('#alert_area').attr('showing', $button.attr('id'))

It's only a slight improvement, but you can replace your else block with toggle. You can also cache your selector to neaten things up.
var $button = $('.button'), $alertArea = $("#alert_area");
if ($button.attr('id') != $alertArea.attr('showing')) {
$alertArea.show()
} else {
$alertArea.toggle();
}
$alertArea.attr('showing', $button.attr('id'));