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Can't create several divs inside another div

I'm trying to create several divs inside the div which has the id "second".
<div>
<div class="content" id="first" hidden></div>
<div class="content" id="second" hidden></div>
<div class="content" id="third" hidden></div>
</div>
I've tried the following function but it does not work.
function createboard(){
for(let i=0;i<10;i++){
let newDiv = document.createElement("div");
newDiv.className="column";
newDiv.id="column";
document.getElementById("second").appendChild(newDiv);
}
}
The function that removes the hidden attribute from the div
function hide_div(){
if(document.getElementById("cavidades").value == "" || document.getElementById("sementes").value==""){
alert("Preencha todos os dados de jogo antes de começar");
}
else{
var start_div = document.getElementById("start_div");
start_div.hidden=true;
var login=document.getElementById("login");
login.hidden=true;
var first = document.getElementById("first");
var second = document.getElementById("second");
var third = document.getElementById("third");
var inside=document.getElementById("inside");
first.hidden=false;
second.hidden=false;
third.hidden=false;
inside.hidden=false;
}
Both are supposed to run when this button is clicked
<button hidden type="submit" id="start" onclick="hide_div() ; createboard()">Começar</button>
CSS of both divs
div#second{
float: left;
background-color: lightgray;
height: 500px;
width: 500px;
border: 5px solid black;
}
div#column{
float: left;
background-color: green;
height: 50px;
width: 50px;
border: 5px solid yellow;
}

It doesn't work because your divs are hidden, try this:
function createboard(){
for(let i=0;i<10;i++){
let newDiv = document.createElement("div");
newDiv.className="column";
document.getElementById("second").appendChild(newDiv);
//just add this line
document.getElementById("second").hidden = false // to show the div
}
}

Modify CSS properties with JavaScript without remplacing the older ones

I'm trying to create a HTML element that moves according to the coordinates of my mouse. I'm using the 'mousemove' event and to move my element, I use the offsetX/Y event's property.
If I only apply a horizontal move for example (so I only use offsetX), it will works. But when I apply the vertical move, it won't works anymore. I use the 'transform' CSS property and I know where the problem is, but I don't know how to solve it. It's because I apply a new property to move vertically, but then I delete the old property that let move the element horizontally.
So do you know how can I add multiple CSS properties (the same) to an element ?
I have tried to just add them together with "+" or in the same ``, but it doesn't work.
I hope I have been clear, and sorry for my english :)
Thank you in advance for your help :)
My code :
let box = document.querySelector('.box');
let x = document.querySelector('#x');
let y = document.querySelector('#y');
let area = document.querySelector('.area');
area.addEventListener('mousemove', (e) => {
x.innerHTML = e.offsetX;
y.innerHTML = e.offsetY;
box.style.transform = `translateX(${e.offsetX}px)`;
box.style.transform = `translateY(${e.offsetY}px)`;
});
.area {
width: 1000px;
height: 400px;
margin: auto;
border: 3px dashed red;
}
.box {
width: 100px;
height: 100px;
border: 3px solid black;
}
<div class="area">
<div class="box"></div>
<p>X : <span id="x"></span></p>
<p>Y : <span id="y"></span></p>
</div>

The value of the transform property is a list of transforms. So set both transformX and transformY in the same assignment.
let box = document.querySelector('.box');
let x = document.querySelector('#x');
let y = document.querySelector('#y');
let area = document.querySelector('.area');
area.addEventListener('mousemove', (e) => {
x.innerHTML = e.offsetX;
y.innerHTML = e.offsetY;
box.style.transform = `translateX(${e.offsetX}px) translateY(${e.offsetY}px)`;
});
.area {
width: 1000px;
height: 400px;
margin: auto;
border: 3px dashed red;
}
.box {
width: 100px;
height: 100px;
border: 3px solid black;
}
<div class="area">
<div class="box"></div>
<p>X : <span id="x"></span></p>
<p>Y : <span id="y"></span></p>
</div>

It doesn't work because you overwrite the translateX style.
box.style.transform = `translate(${e.offsetX}px, ${e.offsetY}px)`;
solve your problem.

Creating and showing div's with javascript

I am trying to create a list of friends and to do this I will need to create a div for each one. The code I tried hasn't worked.
Relevant JavaScript (Now at bottom of page):
document.getElementById("name").innerHTML = user;
document.getElementById("profilePic").src = "users/" + user + "/profilePic.jpg";
var friends = ["Test"];
var friendArea = document.getElementById("friendsDiv");
for (i=0; i < friends.length; i++) {
var friendDiv = document.createElement("div");
friendDiv.setAttribute("class", "friend");
var friendImage = document.createElement("img");
friendImage.setAttribute("class", "friendImage");
friendImage.setAttribute("src", "users/" + friends[i] + "/profilePic.jpg");
friendDiv.appendChild(friendImage);
friendArea.appendChild(friendDiv);
}
Relevant CSS:
.friends {
width: 100%;
height: 90%;
overflow-x: hidden;
overflow-y: auto;
}
.tools {
width: 100%;
height: 10%;
box-shadow: 0px 0px 3px 1px #898989;
}
.friend {
width: 100%;
height: 20%;
padding: 1%;
}
.friendImage {
height: 80%;
width: auto;
border: medium #CCCCCC solid;
-webkit-border-radius: 50%;
-moz-border-radius: 50%;
}
The HTML isn't really important but I'll include it anyway.
<div class="window">
<div class="rightCorner">
<img src="images/pPicTemp.png" id="profilePic">
</div>
<div class="holder" id="profileData">
<span id="name"></span>
</div>
<div class="sideBar">
<div class="friends" id="friendsDiv">
</div>
<div class="tools">
</div>
</div>

Is your script in a tag? Also is the document loaded when you attempt this? What does the console says? Is it working with no css? Also if photo path doesnt work there is no other content in the div did you try outputting something else?

You're not appending the friendImage to the friendDiv.
It should look like this:
var friends = ["Test"];
var friendArea = document.getElementById("friends");
for (i=0; i < friends.length; i++) {
var friendDiv = document.createElement("div");
friendDiv.setAttribute("class", "friend");
var friendImage = document.createElement("img");
friendImage.setAttribute("class", "friendImage");
friendImage.setAttribute("src", "users/" + friends[i] + "/profilePic.jpg");
friendDiv.appendChild(friendImage);
friendArea.appendChild(friendDiv);
}
Also, be sure to put this script at the bottom of your HTML <body></body> tag so that the HTML has loaded the entire document before the JavaScript attempts to get elements from the page.

How to make this tooltip like this with pure javascript

I need to use JS no JQuery plugins to make a simple tooltip like on the image below.
Click on ? image should open this tooltip and click again on the same image to close it.
I think that it's simple for someone with good JS knowledge but I can't do it anyway :(
This is something that I have tried I know it's not too much but I am simply stuck.
How to display it like on the image, how to hide it when it's open and how to add that little triangle in the corner?
myfiddle
<img id="info" src="http://www.craiglotter.co.za/wp-content/uploads/2009/12/craig_question_mark_icon1.png"/>
<div id="ttip">bla bla</div>
document.getElementById('info').addEventListener('click', function(){
// how to check if it's visible so I can close tooltip
document.getElementById('ttip').style.display="block";
});
#info{margin-left:100px;margin-top:50px;}
#ttip
{
width: 280px;
z-index: 15001;
top: 0px;
left: 0px;
display: none;
border-color: #666;
background-color: #fff;
color: #666;
position: relative;
border: 1px solid #666;
padding: 15px 9px 5px 9px;
text-align: left;
word-wrap: break-word;
overflow: hidden;
}

Clean up the css and this will basically do it:
<script>
function doTip(e){
var elem = e.toElement;
if(elem.getAttribute('data-tip-on') === 'false') {
elem.setAttribute('data-tip-on', 'true');
var rect = elem.getBoundingClientRect();
var tipId = Math.random().toString(36).substring(7);
elem.setAttribute('data-tip-id', tipId);
var tip = document.createElement("div");
tip.setAttribute('id', tipId);
tip.innerHTML = elem.getAttribute('data-tip');
tip.style.top = rect.bottom+ 10 + 'px';
tip.style.left = (rect.left-200) + 'px';
tip.setAttribute('class','tip-box');
document.body.appendChild(tip);
} else {
elem.setAttribute('data-tip-on', 'false');
var tip = document.getElementById(elem.getAttribute('data-tip-id'));
tip.parentNode.removeChild(tip);
}
}
function enableTips(){
var elems = document.getElementsByClassName('quick-tip');
for(var i = 0; i < elems.length; i++) {
elems[0].addEventListener("click", doTip, false);
}
}
window.onload = function(){
enableTips();
}
</script>
<style>
.quick-tip {
background: black;
color: #fff;
padding: 5px;
cursor: pointer;
height: 15px;
width: 15px;
text-align: center;
font-weight: 900;
margin-left: 350px;
}
.tip-box {
/* change dimensions to be whatever the background image is */
height: 50px;
width: 200px;
background: grey;
border: 1px solid black;
position: absolute;
}
</style>
<div class="quick-tip" data-tip="THIS IS THE TIP! change elements 'data-tip' to change." data-tip-on="false">?</div>
<script>enableTips(); //might be required for jsfiddle, especially with reloads.</script>
Edit: fixed formatting and a bug. jsfiddle: http://jsfiddle.net/u93a3/

Proof of concept:
The following markup in HTML: Create a div with class tooltip, add image and a div with class info with all text (can be multiple paragraphs if needed, scollbars is shown if necessary):
<div class='tooltip'>
<img src='craig_question_mark_icon1.png' alt='Help'/>
<div class='info'>
Some text to fill the box with.
</div>
</div>
The div.info is set to display:none in CSS.
When the page is loaded a pure javascript is running that draws an image of a triangle on a canvas-element, and then creates a div-element where the triangle is set as a background. Then, for every div.tooltip:
add a click-eventhandler to the image
replace the div.info with a div.info_container
add a clone of the triangle-div to div.info_container
add the original div.info to div.info_container
You can test it with this fiddle. It is tested successfully on FF25, Chrome31, IE10, Opera 12&18.
<!doctype html>
<html>
<head>
<script>
"use strict";
function click(event) {
var elem = this.parentNode.querySelector('div.info_container');
if (elem) elem.style.display = elem.style.display === 'block' ? 'none' : 'block';
}
function toolify() {
var idx,
len,
elem,
info,
text,
elements = document.querySelectorAll('div.tooltip'),
canvas,
imgurl,
pointer,
tipHeight = 20,
tipWidth = 20,
width = 200,
height = 100,
ctx;
// Create a canvas element where the triangle will be drawn
canvas = document.createElement('canvas');
canvas.width = tipHeight;
canvas.height = tipWidth;
ctx = canvas.getContext('2d');
ctx.strokeStyle = '#000'; // Border color
ctx.fillStyle = '#fff'; // background color
ctx.lineWidth = 1;
ctx.translate(-0.5,-0.5); // Move half pixel to make sharp lines
ctx.beginPath();
ctx.moveTo(1,canvas.height); // lower left corner
ctx.lineTo(canvas.width, 1); // upper right corner
ctx.lineTo(canvas.width,canvas.height); // lower right corner
ctx.fill(); // fill the background
ctx.stroke(); // stroke it with border
//fix bottom row
ctx.fillRect(0,canvas.height-0.5,canvas.width-1,canvas.height+2);
// Create a div element where the triangel will be set as background
pointer = document.createElement('div');
pointer.style.width = canvas.width + 'px';
pointer.style.height = canvas.height + 'px';
pointer.innerHTML = ' ' // non breaking space
pointer.style.backgroundImage = 'url(' + canvas.toDataURL() + ')';
pointer.style.position = 'absolute';
pointer.style.top = '2px';
pointer.style.right = '1px';
pointer.style.zIndex = '1'; // place it over the other elements
for (idx=0, len=elements.length; idx < len; ++idx) {
elem = elements[idx];
elem.querySelector('img').addEventListener('click',click);
text = elem.querySelector('div.info');
// Create a new div element, and place the text and pointer in it
info = document.createElement('div');
text.parentNode.replaceChild(info,text);
info.className = 'info_container';
info.appendChild(pointer.cloneNode());
info.appendChild(text);
//info.addEventListener('click',click);
}
}
window.addEventListener('load',toolify);
</script>
<style>
div.tooltip
{
position:relative;
display:inline-block;
width:300px;
text-align:right;
}
div.tooltip > div.info
{
display:none;
}
div.tooltip div.info_container
{
position:absolute;
right:20px;
width:200px;
height:100px;
display:none;
}
div.tooltip div.info
{
text-align:left;
position:absolute;
left:1px;
right:1px;
top:20px;
bottom:1px;
color:#000;
padding:5px;
overflow:auto;
border:1px solid #000;
}
</style>
</head>
<body>
<div class='tooltip'>
<img src='craig_question_mark_icon1.png' alt='Help'/>
<div class='info'>
Some text to fill the box with.
</div>
</div>
<div class='tooltip'>
<img src='craig_question_mark_icon1.png' alt='Help'/>
<div class='info'>
Some text to fill the box with.
Some text to fill the box with.
Some text to fill the box with.
Some text to fill the box with.
</div>
</div>
</body>
</html>

Wordpress - Javascript Toggle Div elements display styles

I have a code that I am working on so that it has a heading tag and an arrow floated to the right and when you click on that arrow it shows the contents of the hidden element and changes the down arrow to an up arrow. Everything seems to work fine except the links I have under the image within the toggle do not work. I cannot highlight the text for some reason so I am assuming that there is an overlap somewhere in my coding.
The JavaScript
function toggleDisplayNewark() {
document.getElementById("toggleMe").style.display == "none";
if(document.getElementById("toggleMe").style.display == "none" ) {
document.getElementById("toggleMe").style.display = "inline";
document.getElementById("toggleMe").style.visibility = "visible";
document.getElementById("arrow").style.background = "url(img/up.png) no-repeat";
} else {
document.getElementById("toggleMe").style.display = "none";
document.getElementById("arrow").style.background = "url(img/down.png) no-repeat";
}
}
The HTML
<div id='newark'>
<div class='text-heading'>
<h2>Newark</h2>
<a href="#newark" onclick="toggleDisplayNewark();">
<div id='arrow'></div>
</a>
</div>
<div id='toggleMe' style='display: none;'>
<div class='alignleft thumb-imgs'>
<img src='img/excercise.png' />
<a href='http://exercise.com/' target='_blank'>Exercise Institute</a>
</div>
<div class='clear'></div>
</div>
</div>
The CSS
#arrow {background: url(http://emf-websolutions.com/wp-content/uploads/2013/03/down.png) no-repeat; height: 27px; width: 29px; float: right; margin: -30px 10px 0 0;}
#toggleMe {display: none;}
.text-heading {-webkit-border-radius: 5px; border-radius: 5px; margin: 10px 0; width: 640px; padding: 5px 0px; background: #333; border: 1px solid red;}
.clear {clear: both;}
.thumb-imgs {width: 204px; height: 210px; padding: 5px 5px 40px 5px;}
I built this in a html file before I put it into wordpress so I could make sure that it works properly. I just can't seem to find where the problem lies. I have striped down the coding so that it would not take up so much space. The idea of this is to have a heading with an arrow in the right side to drop down this box with 3 images with a link under each one for each line.
Thanks for your help in advance.

http://jsfiddle.net/QXSXC/
remove the onclick
<a href="#newark" >
and use jQuery:
$('#newark').click(function() {
document.getElementById("toggleMe10").style.display == "none";
if(document.getElementById("toggleMe10").style.display == "none" ) {
document.getElementById("toggleMe10").style.display = "inline";
document.getElementById("toggleMe10").style.visibility = "visible";
document.getElementById("arrow10").style.background = "url(img/up.png) no-repeat";
} else {
document.getElementById("toggleMe10").style.display = "none";
document.getElementById("arrow10").style.background = "url(img/down.png) no-repeat";
}
});
You can assign a handler to #newarkwith pure JS google it if you can't use jQuery