Develop Reference

Javascript: select multiple div ID's

I'm using the javascript from this answer but since I want it for multiple pages, sometimes with more or less divs to show/hide I would like to call the function without listing all divId's. I've tried applying the starts with selector and adding a class and calling the class but I can't make it work.
I also made a change to the divVisibility function (replacing the null to divId) because I want to always have one div visible. This works but it seems to me like the first function could be tightened because I have the same line for both if and else operations.
Any help appreciated.
Improving my question. Here's the script with my tiny edit on line 5 of the JS. It currently does work but I want to not have to include all div names ("Div1", "Div2", "Div3", etc) and check if it can be tightened any more.
var divs = ["Div1", "Div2", "Div3", "Div4"];
var visibleDivId = null;
function divVisibility(divId) {
if(visibleDivId === divId) {
visibleDivId = divId;
} else {
visibleDivId = divId;
}
hideNonVisibleDivs();
}
function hideNonVisibleDivs() {
var i, divId, div;
for(i = 0; i < divs.length; i++) {
divId = divs[i];
div = document.getElementById(divId);
if(visibleDivId === divId) {
div.style.display = "block";
} else {
div.style.display = "none";
}
}
}
.buttons a {
font-size: 16px;
}
.buttons a:hover {
cursor:pointer;
font-size: 16px;
}
<div class="main_div">
<div class="buttons">
Div1 |
Div2 |
Div3 |
Div4
</div>
<div class="inner_div">
<div id="Div1">I'm Div One</div>
<div id="Div2" style="display: none;">I'm Div Two</div>
<div id="Div3" style="display: none;">I'm Div Three</div>
<div id="Div4" style="display: none;">I'm Div Four</div>
</div>
</div>

Here is an answer where the number of anchor (<a>) tags is derived from the number of div elements in your html body. No jQuery here either.
If you give <div class="buttons"> an id and each of the inner_div divs a common class, you can then select all of the inner_div elements by class name and generate an anchor tag for them.
You can then do away with the logic of which div is visible by just setting them all to style="display: none;" and then only setting style="display: block;" on the element matching the ID of the one you clicked on.
var divs = document.getElementsByClassName('invizdiv');
/*
This bit sets up your anchor tags dynamically depending on
how many divs you have with the class 'invizdiv'
*/
for (var i = 0; i < divs.length; i++) {
var listDivId = divs[i].id.slice();
var newAnchor = document.createElement('a');
newAnchor.innerHTML = listDivId;
newAnchor.className = "buttons";
newAnchor.href = '#';
newAnchor.setAttribute('targetdiv', listDivId);
// console.log(listDivId);
newAnchor.addEventListener('click', function(elem, event) {
// console.log(elem);
// console.log(event);
divVisibility(elem.target.getAttribute('targetdiv'));
});
document.getElementById('button_list').appendChild(newAnchor);
}
// here onwards is unchanged
var visibleDivId = null;
function divVisibility(divId) {
var div;
for (var i = 0; i < divs.length; i++) {
div = divs[i];
div.style.display = "none";
}
div = document.getElementById(divId);
div.style.display = "block";
}
.buttons a {
font-size: 16px;
}
.buttons a:hover {
cursor: pointer;
font-size: 16px;
}
<div class="main_div">
<div id="button_list" class="buttons">
<!-- We'll dynamically add here later -->
</div>
<div class="inner_div">
<div id="Div1" class="invizdiv">I'm Div One</div>
<div id="Div2" class="invizdiv" style="display: none;">I'm Div Two</div>
<div id="Div3" class="invizdiv" style="display: none;">I'm Div Three</div>
<div id="Div4" class="invizdiv" style="display: none;">I'm Div Four</div>
</div>
</div>

I see you work without jQuery so here is an answer without.
Loop over all inner_div children and hide them by default,
then show content div 1. Afterwards the hiding and showing is handled by the click handlers.
Ofcourse this is one way of doing it.
function hideAllContent(){
// loop over the inner_div children and hide them
Array.prototype.forEach.call(document.getElementById('inner_div').children, function(v){
v.style.display = 'none';
})
}
function divVisibility(divId){
var el = document.getElementById(divId);
if(el){
hideAllContent();
el.style.display = 'block';
}
}
hideAllContent();
divVisibility('Div1'); // open by default with this content
.buttons a {
font-size: 16px;
}
.buttons a:hover {
cursor:pointer;
font-size: 16px;
}
<div class="buttons">
Div1 |
Div2 |
Div3 |
Div4
</div>
<div id="inner_div">
<div id="Div1">I'm Div One</div>
<div id="Div2">I'm Div Two</div>
<div id="Div3">I'm Div Three</div>
<div id="Div4">I'm Div Four</div>
</div>

Pure JS // Hide div when another divs class has been changed

Note: I can't use jQuery, only vanilla javascript
I'm not really fluent in pure JS. And this time I can't use any external resources (like jquery).
What I need:
If div1 class is active, hide text2
If div2 class is active, hide text1
I made it somehow to work, but my JS doesn't trigger when the class changes dynamic with another javascript code.
Code that triggers the active class
function activeClass(elem) {
var a = document.getElementsByClassName('item')
for (i = 0; i < a.length; i++) {
a[i].classList.remove('active')
}
elem.classList.add('active');
}
Code that should trigger hide/show when the class changes
if (document.querySelector(".text2").classList.contains("active")) {
document.getElementsByClassName('text1s')[0].style.visibility = 'hidden';
document.getElementsByClassName('text2s')[0].style.visibility = 'visible';
}
if (document.querySelector(".text1").classList.contains("active")) {
document.getElementsByClassName('text2s')[0].style.visibility = 'hidden';
document.getElementsByClassName('text1s')[0].style.visibility = 'visible';
}
What did I do wrong?
Codepen demo

Place your conditions inside click handler.
Add inline visibility style for inactive element
function activeClass(elem) {
var a = document.getElementsByClassName('item')
for (i = 0; i < a.length; i++) {
a[i].classList.remove('active')
}
elem.classList.add('active');
if (document.querySelector(".text2").classList.contains("active")) {
document.getElementsByClassName('text1s')[0].style.visibility = 'hidden';
document.getElementsByClassName('text2s')[0].style.visibility = 'visible';
}
if (document.querySelector(".text1").classList.contains("active")) {
document.getElementsByClassName('text2s')[0].style.visibility = 'hidden';
document.getElementsByClassName('text1s')[0].style.visibility = 'visible';
}
}
body {
margin: 3em;
}
.item {
cursor: pointer;
}
a {
padding: 10px;
}
.active {
color: red;
border: 1px solid red;
}
<a class="item text1" onclick="activeClass(this)">show text</a>
<a class="item text2 active" onclick="activeClass(this)">hide text</a>
<br>
<br>
<h1 class="text1s" style='visibility:hidden;'>TEXT 1</h1>
<h1 class="text2s">TEXT 2</h1>
Updated Codepen

managing several show/hide divs

I have some scripts here that show and hide divs when click. Now what I need is to just only display one div at a time. I have a code that controls them all but its not working I don't know about much of javascript.
This is the first example of show/hide function that can be done simultaneously without hiding the other divs.
FIDDLE HERE
HTML:
<a href="javascript:ReverseDisplay('uniquename')">
Click to show/hide.
</a>
<div id="uniquename" style="display:none;">
<p>Content goes here.</p>
</div>
<a href="javascript:ReverseDisplay('uniquename1')">
Click to show/hide.
</a>
<div id="uniquename1" style="display:none;">
<p>Content goes here.</p>
</div>
SCRIPT:
function HideContent(d) {
document.getElementById(d).style.display = "none";
}
function ShowContent(d) {
document.getElementById(d).style.display = "block";
}
function ReverseDisplay(d) {
if (document.getElementById(d).style.display == "none") {
document.getElementById(d).style.display = "block";
} else {
document.getElementById(d).style.display = "none";
}
}
function HideAllShowOne(d) {
// Between the quotation marks, list the id values of each div.
var IDvaluesOfEachDiv = "idone idtwo uniquename1 uniquename";
//-------------------------------------------------------------
IDvaluesOfEachDiv = IDvaluesOfEachDiv.replace(/[,\s"']/g," ");
IDvaluesOfEachDiv = IDvaluesOfEachDiv.replace(/^\s*/,"");
IDvaluesOfEachDiv = IDvaluesOfEachDiv.replace(/\s*$/,"");
IDvaluesOfEachDiv = IDvaluesOfEachDiv.replace(/ +/g," ");
var IDlist = IDvaluesOfEachDiv.split(" ");
for(var i=0; i<IDlist.length; i++) { HideContent(IDlist[i]); }
ShowContent(d);
}
The other fiddle I created would do what I need but the script seems not to be working. Fiddle here
Found the solution on my code thanks to #Abhas Tandon
Fiddle here the extra id's inside the IDvaluesOfEachDiv seems to be making some error with the codes.

If you are happy with IE10+ support then
function ReverseDisplay(d) {
var els = document.querySelectorAll('.toggle.active:not(#' + d + ')');
for (var i = 0; i < els.length; i++) {
els[i].classList.remove('active');
}
document.getElementById(d).classList.toggle('active')
}
.toggle {
display: none;
}
.toggle.active {
display: block;
}
<a href="javascript:ReverseDisplay('uniquename')">
Click to show/hide.
</a>
<div id="uniquename" class="toggle">
<p>Content goes here.</p>
</div>
<a href="javascript:ReverseDisplay('uniquename1')">
Click to show/hide.
</a>
<div id="uniquename1" class="toggle">
<p>Content goes here.</p>
</div>

I would suggest to use jQuery which is far easier.
Include thiswithin
<head>
<script src="//code.jquery.com/jquery-1.11.1.min.js"></script>
</head>
HTML
<div id="id_one">Item 1</div>
<div id="content_one">
content goes here
</div>
<div id="id_two">Item 1</div>
<div id="content_two">
content goes here
</div>
Script:
$(function()
{
$("#content_one").hide();
$("#content_two").hide();
});
$("#id_one").on("click",function()
{
$("#content_one").slideDown("fast");
});
$("#id_two").on("click",function()
{
$("#content_two").slideDown("fast");
});

If you have a "Button" for every DIV inside your HTML - you can go by element index
var btn = document.querySelectorAll(".btn");
var div = document.querySelectorAll(".ele");
function toggleDivs() {
for(var i=0; i<btn.length; i++) {
var us = i===[].slice.call(btn).indexOf(this);
btn[i].tog = us ? this.tog^=1 : 0;
div[i].style.display = ["none","block"][us?[this.tog]:0];
}
}
for(var i=0; i<btn.length; i++) btn[i].addEventListener("click", toggleDivs);
.btn{/* Anchors Buttons */ display:block; cursor:pointer; color:#00f;}
.ele{/* Hidden Divs */ display:none;}
<a class="btn"> 1Click to show/hide.</a>
<div class="ele"><p>1Content goes here.</p></div>
<hr>
<a class="btn">2Click to show/hide.</a>
<div class="ele"><p>2Content goes here.</p></div>
<hr>

Make div in div clickable with Javascript

Have a problem and can't get to solve it. Tried to use QuerySelectorAll and comma separating with GetElementsByClassName, but that didn't work, so I am wondering how to solve this problem.
I have this HTML:
<div class="area">Test title
<div class="some content" style="display: none">blablbala
<input></input>
</div>
<div class="two">This should be clickable too</div>
</div>
<div class="area">
Test title
<div class="some content">
blablbala
<input></input>
</div>
<div class="two">This should be clickable too</div>
</div>
JS:
function areaCollapse() {
var next = this.querySelector(".content");
if (this.classList.contains("open")) {
next.style.display = "none";
this.classList.remove("open");
} else {
next.style.display = "block";
this.classList.add("open");
}
}
var classname = document.getElementsByClassName("area");
for (var i = 0; i < classname.length; i++) {
classname[i].addEventListener('click', areaCollapse, true);
}
http://jsfiddle.net/1BJK903/nb1ao39k/6/
CSS:
.two {
position: absolute;
top: 0;
}
So now, the div with classname "area" is clickable. I positioned the div with class "two" absolute and now the whole div is clickable, except where this other div is. If you click on the div with classname "two", it doesn't work (it does not collapse or open the contents). How can I make this work, without changing the structure?

One way is using a global handler, where you can handle more than one item by checking its id or class or some other property or attribute.
Below snippet finds the "area" div and pass it as a param to the areaCollapse function. It also check so it is only the two or the area div (colored lime/yellow) that was clicked before calling the areaCollapse.
Also the original code didn't have the "open" class already added to it (the second div group), which mean one need to click twice, so I change the areaCollapse function to check for the display property instead.
function areaCollapse(elem) {
var next = elem.querySelector(".content");
if (next.style.display != "none") {
next.style.display = "none";
} else {
next.style.display = "block";
}
}
window.addEventListener('click', function(e) {
//temp alert to check which element were clicked
//alert(e.target.className);
if (hasClass(e.target,"area")) {
areaCollapse(e.target);
} else {
//delete next line if all children are clickable
if (hasClass(e.target,"two")) {
var el = e.target;
while ((el = el.parentElement) && !hasClass(el,"area"));
if (targetInParent(e.target,el)) {
areaCollapse(el);
}
//delete next line if all children are clickable
}
}
});
function hasClass(elm,cln) {
return (" " + elm.className + " " ).indexOf( " "+cln+" " ) > -1;
}
function targetInParent(trg,pnt) {
return (trg === pnt) ? false : pnt.contains(trg);
}
.area {
background-color: lime;
}
.two {
background-color: yellow;
}
.area:hover, .two:hover {
background-color: green;
}
.some {
background-color: white;
}
.some:hover {
background-color: white;
}
<div class="area">Test title clickable 1
<div class="some content" style="display: none">blablbala NOT clickable 1
</div>
<div class="two">This should be clickable too 1</div>
</div>
<div class="area">Test title clickable 2
<div class="some content">blablbala NOT clickable 2
</div>
<div class="two">This should be clickable too 2</div>
</div>
<div class="other">This should NOT be clickable</div>

You need to find your two elements while you're binding classname, and bind that as well.
var classname = document.getElementsByClassName("area");
for(var i=0; i < classname.length; i++){
classname[i].addEventListener('click', areaCollapse, true);
var twoEl = classname[i].getElementsByClassName("two")[0];
twoEl.addEventListener('click', function(e) { console.log('two clicked'); });
}

If you want to use jQuery:
$('.two').click(function(){
//action here
});

How can I change the x position of a div via javascript when I click on another div this way?

<body>
<div id = "SiteContainer">
<div id = "NavigationButtons"></div>
<div id = "ShowReelContainer">
<div id= "NavigationBackward" name = "back" onclick="setPosition();">x</div>
<div id= "NavigationForward" name = "forward" onclick="setPosition();">y</div>
<div id = "VideoWrapper">
<div id = "SlideShowItem">
<img src="Images/A.png" alt="A"></img>
</div>
<div id = "SlideShowItem">
<img src="Images/B.png" alt="B"></img>
</div>
<div id = "SlideShowItem">
<img src="Images/C.png" alt="C" ></img>
</div>
</div>
</div>
</div>
<script>
var wrapper = document.querySelector("#VideoWrapper");
function setPosition(e)
{
if(e.target.name = "forward")
{
if!(wrapper.style.left = "-200%")
{
wrapper.style.left = wrapper.style.left - 100%;
}
}
else
{
if(e.target.name = "back")
{
if!(wrapper.style.left = "0%")
{
wrapper.style.left = wrapper.style.left + 100%;
}
}
}
}
</script>
</body>
Hi, I am very new to javascript. What I am trying to do, is change the x-position of a div when another div (NavigationForward or NavigationBackward) is clicked. However it does not appear to do anything at all. Basically if the div with name forward is clicked, I want to translate the VideoWrapper -100% from it's current position and +100% when "back". The css div itself VideoWrapper has a width of 300%. Inside this div as you can see is a SlideShowItem which is what will change. Perhaps I am adding and subtracting 100% the wrong way?
EDIT:
Thanks everyone for helping me out with this...I had just one more query, I am trying to hide the arrows based on whether the wrapper is at the first slide or the last slide. If its on the first slide, then I'd hide the left arrow div and if it's on the last, I'd hide the right arrow, otherwise display both of em. Ive tried several ways to achieve this, but none of em work, so Ive resorted to using copies of variables from the function that works. Even then it does not work. It appears that my if and else if statements always evaluate to false, so perhaps I am not retrieving the position properly?
function HideArrows()
{
var wrapper2 = document.getElementById("VideoWrapper");
var offset_x2 = wrapper2.style.left;
if(parseInt(offset_x2,10) == max_x)
{
document.getElementById("NavigationForward").display = 'none';
}
else if(parseInt(offset_x2,10) == min_x)
{
document.getElementById("NavigationBackward").display = 'none';
}
else
{
document.getElementById("NavigationForward").display = 'inline-block';
document.getElementById("NavigationBackward").display = 'inline-block';
}
}
//html is the same except that I added a mouseover = "HideArrows();"
<div id = "ShowReelContainer" onmouseover="HideArrows();">

To achieve this type o slider functionality your div VideoWrapper must have overflow:hidden style, and your SlideShowItemdivs must have a position:relative style.
Then to move the slides forward or backward you can use the style left which allows you to move the divs SlideShowItem relative to it's parent VideoWrapper.
I've tested this here on JSFiddle.
It seems to work as you described in your question, although you may need to do some adjustments, like defining the width of your slides, how many they are and so on.
For the sake of simplicity, I defined them as "constants" on the top of the code, but I think you can work from that point on.
CSS
#VideoWrapper{
position:relative; height:100px; white-space:nowrap;width:500px;
margin-left:0px; border:1px solid #000; overflow:hidden; }
.SlideShowItem{
width:500px; height:100px;display:inline-block;position:relative; }
#NavigationForward, #NavigationBackward{
cursor:pointer;float:left; background-color:silver;margin-right:5px;
margin-bottom:10px; text-align:center; padding:10px; }
HTML
<div id = "SiteContainer">
<div id = "NavigationButtons">
</div>
<div id = "ShowReelContainer">
<div id= "NavigationBackward" name = "back" onclick="setPosition('back');">prev</div>
<div id= "NavigationForward" name = "forward" onclick="setPosition('forward');">next</div>
<div style="clear:both;"></div>
<div id = "VideoWrapper">
<div class= "SlideShowItem" style="background-color:blue;">
Slide 1
</div>
<div class = "SlideShowItem" style="background-color:yellow;">
Slide 2
</div>
<div class = "SlideShowItem" style="background-color:pink;">
Slide 3
</div>
</div>
</div>
</div>
JavaScript
var unit = 'px'; var margin = 4; var itemSize = 500 + margin; var itemCount = 3; var min_x = 0; var max_x = -(itemCount-1) * itemSize;
function setPosition(e) {
var wrapper = document.getElementById("VideoWrapper");
var slides = wrapper.getElementsByTagName('div');
var offset_x = slides[0].style.left.replace(unit, '');
var curr_x = parseInt(offset_x.length == 0 ? 0 : offset_x);
if(e == "forward")
{
if(curr_x <= max_x)
return;
for(var i=0; i<slides.length; i++)
slides[i].style.left= (curr_x + -itemSize) + unit;
}
else if(e == "back")
{
if(curr_x >= min_x)
return;
for(var i=0; i<slides.length; i++)
slides[i].style.left= (curr_x + itemSize) + unit;
} }
After you analyze and test the code, I don't really know what's your purpose with this, I mean, you maybe just playing around or trying to develop something for a personal project, but if you are looking for something more professional avoid to create things like sliders on your own, as there are tons of plugins like this available and well tested out there on the web.
Consider using jQuery with NivoSlider, it works like a charm and is cross browser.

I would recommend using jQuery, this will reduce your coding by quite a bit. Can read more here: http://api.jquery.com/animate/
I've created a simple fiddle for you to take a look at. This example uses the .animate() method to reposition two div elements based on the CSS 'left' property.
CSS:
#container {
position: absolute;
left: 1em;
top: 1em;
right: 1em;
bottom: 1em;
overflow: hidden;
}
#one, #two {
position: absolute;
color: white;
}
#one {
background: pink;
width: 100%;
top:0;
bottom:0;
}
#two {
background: blue;
width: 100%;
left: 100%;
top:0;
bottom:0;
}
HTML:
<div id="container">
<div id="one">Div One</div>
<div id="two">Div Two</div>
</div>
JavaScript/jQuery:
var one, two, container;
function animateSlides(){
one.animate({
left : '-100%'
}, 1000, function(){
one.animate({
left : 0
}, 1000);
});
two.animate({
left : 0
}, 1000, function(){
two.animate({
left:'100%'
}, 1000);
});
};
$(function(){
one = $('#one');
two = $('#two');
container = $('#container');
setInterval(animateSlides, 2000);
});
JSFiddle Example: http://jsfiddle.net/adamfullen/vSSK8/3/