Develop Reference

How to hide a div after regular scroll?

I am a beginner and learning by myself, by taking help of stack-overflow and other online tutorials.
Well, I tried a lot of scripts, seems not a single one worked for me except this one. However all of my trials are working in localhost but post production they don't, seems some conflict.
Here are the working codes
window.addEventListener("scroll",function(){
var target = document.getElementsByClassName('cta-bg');
if(window.pageYOffset > 500){
target[0].style.display = "block";
}
else if(window.pageYOffset < 500){
target[0].style.display = "none";
}
},false);
.cta-bg{
padding:2em;
background-color: #000;
position: sticky;
bottom: 10%;
top: 40%;
width: 70%;
z-index: 1;
}
<div class="cta-bg">some content here</div>
I want to show my div between the scroll of 500-1500 only, I tried
window.pageYOffset < 500 && window.pageYOffset > 1500
but it's not working for me, please guide.

Just tried window.pageYOffset > 500 && window.pageYOffset < 1500 and it's working fine.
Also set display: none; for the div to hide it by default.
window.addEventListener("scroll", function() {
var target = document.getElementsByClassName('cta-bg');
console.log(window.pageYOffset);
if (window.pageYOffset > 500 && window.pageYOffset < 1500) {
target[0].style.display = "block";
} else {
target[0].style.display = "none";
}
}, false);
body {
height: 5000px;
}
.cta-bg {
display: none;
padding: 2em;
background-color: #000;
position: sticky;
bottom: 10%;
top: 40%;
width: 70%;
z-index: 1;
}
<div class="cta-bg">some content here</div>

Hope the solution below helps:
window.addEventListener(
'scroll',
function (e) {
var target = document.getElementsByClassName("cta-bg")[0];
if (window.scrollY > 500 && window.scrollY < 1500) {
target.innerText = window.scrollY;
target.style.display = "block";
}
else {
target.style.display = "none";
}
},
);
.filler {
padding-bottom: 800px;
border: 1px solid red;
}
.cta-bg {
color: #fff;
padding: 2em;
background-color: #000;
position: sticky;
bottom: 10%;
top: 40%;
width: 70%;
z-index: 1;
display: none;
}
<div class="filler"></div>
<div class="cta-bg">some content here</div>
<div class="filler"></div>

Vanilla JS Hide/show DIV toggler

I'm trying to implement a way to display / hide a div element with vanilla JavaScript triggered by a click event. The hide function works well but I seem to be missing something important when it comes to displaying the div's again. I've verified that the toggler function is working.
Simple sandbox here:
https://codepen.io/pen/eYmOzVe
(function() {
"use strict";
// HTML References
var flags = document.querySelector(".flags");
// Toogle
var toogle = true;
// Flag object
var flagObject = {
init: function(part1, part2, part3, part4, part5) {
this.part1 = part1;
this.part2 = part2;
this.part3 = part3;
this.part4 = part4;
this.part5 = part5;
},
draw: function() {
flags.innerHTML += `
<div id="${this.part1}">
<div class="${this.part2}">
<div class="${this.part3}"></div>
<div class="${this.part4}"></div>
<div class="${this.part5}"></div>
</div>
</div>
`;
},
toogler: function(arg) {
toogle ? flagObject.remove(arg) : flagObject.show(arg);
toogle = !toogle;
},
remove: function(arg) {
if (arg == "1") {
flag1Element.style.visibility = "hidden";
}
if (arg == "2") {
flag2Element.style.visibility = "hidden";
}
},
show: function(arg) {
if (arg == "1") {
flag1Element.style.visibility = "visible";
}
if (arg == "2") {
flag2Element.style.visibility = "visible";
}
}
};
// Create instances of the object
var swedishFlag = Object.create(flagObject);
var japaneseFlag = Object.create(flagObject);
// Init
swedishFlag.init(
"flag1",
"flag-sweden",
"cross-one-sweden",
"cross-two-sweden"
);
japaneseFlag.init("flag2", "flag-japan", "circle-japan");
// Array containing all flags
var allObjects = [swedishFlag, japaneseFlag];
// Draws flags
for (let i = 0; i < allObjects.length; i++) {
allObjects[i].draw();
}
// HTML element refrences
var flag1Element = document.querySelector("#flag1");
var flag2Element = document.querySelector("#flag2");
// Add eventlisteners to remove flags on click
flag1Element.addEventListener("click", function() {
flagObject.toogler(1);
});
flag2Element.addEventListener("click", function() {
flagObject.toogler(2);
});
})();
h1 {
text-align: center;
}
h3 {
color: green;
}
.content {
border: 1px solid black;
background-color: #eee;
padding: 2em;
margin: 0 auto;
height: 1000px;
width: 800px;
border-radius: 30px;
text-align: center;
}
.flags {
display: flex;
justify-content: center;
flex-direction: column;
align-items: center;
height: 1000px;
}
.flag-sweden {
position: relative;
background-color: #006aa7;
height: 200px;
width: 320px;
margin-bottom: 2em;
}
.cross-one-sweden {
background-color: #fecc00;
position: absolute;
width: 40px;
height: 200px;
top: 0;
left: 100px;
}
.cross-two-sweden {
background-color: #fecc00;
position: absolute;
width: 320px;
height: 40px;
top: 80px;
left: 0;
}
.flag-japan {
position: relative;
height: 200px;
width: 320px;
background-color: white;
margin-bottom: 2em;
}
.circle-japan {
background-color: #bd0029;
height: 125px;
width: 125px;
border-radius: 50%;
position: absolute;
top: 50%;
left: 50%;
margin: -62.5px 0 0 -62.5px;
}
<h1>Sandbox</h1>
<div id="content" class="content">
<div class="flags"></div>
</div>

As Pavlin Petkov said in the comments, the image is not clickable when you hide it, so you can't toggle it back on. A simple solution to this that achieves the same result is to change the opacity instead of the visibility:
remove: function(arg) {
if (arg == "1") {
flag1Element.style.opacity = 0;
}
if (arg == "2") {
flag2Element.style.opacity = 0;
}
},
show: function(arg) {
if (arg == "1") {
flag1Element.style.opacity = 1;
}
if (arg == "2") {
flag2Element.style.opacity = 1;
}
}
This will display/hide a div with a click effect, and it will continue to occupy space on the page, as in your codepen. If you need to use visibility for some reason, I'd recommend a container div beneath the now hidden div which can trigger the show function; however, for the question at hand, this is sufficient.

How i will add a time limit of pop up image

When click on the small image it will open as pop-up for 15 seconds, and then automatically opens the second one.
Is it possible to add certain time limit of pop-up image and after that the next image will open? closely same with Whatsapp or Facebook status.
Here is my HTML, CSS and JavaScript code:
$(function () {
"use strict";
$(".popup img").click(function () {
var $src = $(this).attr("src");
$(".show").fadeIn();
$(".img-show img").attr("src", $src);
});
$("span, .overlay").click(function () {
$(".show").fadeOut();
});
});
.popup{
width: 900px;
margin: auto;
text-align: center
}
.popup img{
width: 200px;
height: 200px;
cursor: pointer
}
.show{
z-index: 999;
display: none;
}
.show .overlay{
width: 100%;
height: 100%;
background: rgba(0,0,0,.66);
position: absolute;
top: 0;
left: 0;
}
.show .img-show{
width: 600px;
height: 400px;
background: #FFF;
position: absolute;
top: 50%;
left: 50%;
transform: translate(-50%,-50%);
overflow: hidden
}
.img-show span{
position: absolute;
top: 10px;
right: 10px;
z-index: 99;
cursor: pointer;
}
.img-show img{
width: 100%;
height: 100%;
position: absolute;
top: 0;
left: 0;
}
/*End style*/
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<div class="popup">
<img src="http://images.entertainment.ie/images_content/rectangle/620x372/success-kid.jpg">
<img src="https://pbs.twimg.com/media/CX1PAZwVAAANemW.jpg">
<img src="http://images5.fanpop.com/image/photos/30900000/beautiful-pic-different-beautiful-pictures-30958249-1600-1200.jpg">
</div>
<div class="show">
<div class="overlay"></div>
<div class="img-show">
<span>X</span>
<img src="">
</div>
</div>
<!--End image popup-->
Thank you.

window.onload = function() {
setTimeout(function() {
document.getElementById('mydiv').style.display = 'block';
}, 10000);
}

You can use this code but I guess you can easily find more examples for this on google.
$(function() {
"use strict";
var timeOut;
var intervalMs = 15000;
$(".popup img").click(function() {
var src = $(this).attr("src");
$(".show").fadeIn();
$(".img-show img").attr("src", src);
if (timeOut != null)
clearTimeout(timeOut);
var that = $(this);
timeOut = setTimeout(function() {
if (that.next() == null)
that.siblings().first().click();
else
that.next().click();
}, intervalMs);
});
$("span, .overlay").click(function() {
clearTimeout(timeOut);
$(".show").fadeOut();
});
});

Prevent inside contents inside parent container from making the parent disappear

I have this script that uses a toggle button to show or hide a targeted parent container. There is two correct ways that the parent class container hides by
pressing the toggle button the second time or by clicking outside the parent class container. So it works perfectly but any time I add any thing inside that
parent class container and I click those inside contents it makes the whole parent class container disappear how can I prevent that?
Here is my code
document.addEventListener('DOMContentLoaded', function(){
document.addEventListener('click',closeContainer);
function closeContainer(obj){
var containerVar = document.querySelector('.container');
if(obj.target.className != 'container') {
if (containerVar.style.display === 'flex') {
containerVar.style.display = 'none';
} else if(obj.target.id == 'toggle') {
containerVar.style.display = 'flex';
}
}
}
});
.container{
background-color: orange;
height: 350px;
width: 350px;
margin-left: auto;
margin-right: auto;
display: none;
justify-content: center;
}
.inner-container{
margin-top: 50px;
background-color: red;
height: 200px;
width: 200px;
display: inline-block;
}
<button id='toggle'>Toggle</button>
<div class='container'>
<div class='inner-container'></div>
</div>

You need to capture click events on your container and stop propagation, then there's no need to check the target in your document's event handler:
document.addEventListener('DOMContentLoaded', function() {
// if click event is inside container, then stop propagation
const container = document.querySelector('.container');
container.addEventListener('click', function(e) {
e.stopPropagation();
});
document.addEventListener('click', closeContainer);
function closeContainer(obj) {
var containerVar = document.querySelector('.container');
if (containerVar.style.display === 'flex') {
containerVar.style.display = 'none';
} else if (obj.target.id == 'toggle') {
containerVar.style.display = 'flex';
}
}
});
.container {
background-color: orange;
height: 350px;
width: 350px;
margin-left: auto;
margin-right: auto;
display: none;
justify-content: center;
}
.inner-container {
margin-top: 50px;
background-color: red;
height: 200px;
width: 200px;
display: inline-block;
}
<button id='toggle'>Toggle</button>
<div class='container'>
<div class='inner-container'></div>
</div>
Another solution would be to only have one event handler on document and check if the target or any of its ancestors have the container class (similar to jquery's closest method):
document.addEventListener('DOMContentLoaded', function() {
document.addEventListener('click', closeContainer);
function closeContainer(obj) {
if (closest(obj.target, '.container')) return;
var containerVar = document.querySelector('.container');
if (containerVar.style.display === 'flex') {
containerVar.style.display = 'none';
} else if (obj.target.id == 'toggle') {
containerVar.style.display = 'flex';
}
}
function closest(el, selector) {
const matchesSelector = el.matches || el.webkitMatchesSelector || el.mozMatchesSelector || el.msMatchesSelector;
while (el) {
if (matchesSelector.call(el, selector)) {
return el;
} else {
el = el.parentElement;
}
}
return null;
}
});
.container {
background-color: orange;
height: 350px;
width: 350px;
margin-left: auto;
margin-right: auto;
display: none;
justify-content: center;
}
.inner-container {
margin-top: 50px;
background-color: red;
height: 200px;
width: 200px;
display: inline-block;
}
<button id='toggle'>Toggle</button>
<div class='container'>
<div class='inner-container'></div>
</div>

Draggable split-pane windows in flexbox can't get past child elements [duplicate]

This question already has answers here:
Why don't flex items shrink past content size?
(5 answers)
Closed 3 years ago.
I implemented my own split-pane with HTML/JS/CSS Flexbox.
I'm having trouble with the splitter in the following case- one of the panels has a fixed size (in px), and the other one is set to grow (flex-grow: 1).
In case the other panel has children with size, it won't scroll to the end. It gets stuck at the size of the children.
Can this be fixed with CSS on the split-pane panels but not on the children?
It's very important for me to use flex as I want to maintain responsiveness of my application, and want to avoid fixed sizes wherever I can.
This is a JSFiddle sample
of my question.
Code snippet given below. Thanks!
function startDrag() {
glass.style = 'display: block;';
glass.addEventListener('mousemove', drag, false);
}
function endDrag() {
glass.removeEventListener('mousemove', drag, false);
glass.style = '';
}
function drag(event) {
var splitter = getSplitter();
var panel = document.getElementById('c2');
var currentWidth = panel.offsetWidth;
var currentLeft = panel.offsetLeft;
panel.style.width = (currentWidth - (event.clientX - currentLeft)) + "px";
}
function getSplitter() {
return document.getElementById('splitter');
}
var con = document.getElementById('container');
var splitter = document.createElement('div');
var glass = document.getElementById('glass');
splitter.className = 'splitter';
splitter.id = 'splitter';
con.insertBefore(splitter, con.lastElementChild);
splitter.addEventListener('mousedown', startDrag, false);
glass.addEventListener('mouseup', endDrag, false);
.container {
display: flex;
border: 1px solid;
width: 500px;
height: 300px;
position: absolute;
}
.c1 {
background-color: blue;
flex: 1;
height: 100%;
}
.c2 {
background-color: green;
width: 150px;
}
.splitter {
width: 20px;
cursor: col-resize;
}
.glass {
height: 100%;
width: 100%;
cursor: col-resize;
display: none;
position: absolute;
}
.grandchild {
background-color: red;
width: 50px;
height: 50px;
}
<div id="container" class="container">
<div id="glass" class="glass"></div>
<div class="c1">
<div class="grandchild"></div>
</div>
<div id="c2" class="c2"></div>
</div>

In case the other panel has children with size, it won't scroll to the end. It gets stuck at the size of the children.
This is because an initial setting of a flex container is min-width: auto on the flex items. This means that a flex item, by default, cannot be smaller than the size of its content.
Can this be fixed with CSS on the split-pane panels but not on the children?
Yes. Override the default with min-width: 0 or with any overflow other than visible:
.c1 {
background-color: blue;
flex: 1;
height: 100%;
overflow: hidden; /* or min-width: 0 */
}
revised fiddle
function startDrag() {
glass.style = 'display: block;';
glass.addEventListener('mousemove', drag, false);
}
function endDrag() {
glass.removeEventListener('mousemove', drag, false);
glass.style = '';
}
function drag(event) {
var splitter = getSplitter();
var panel = document.getElementById('c2');
var currentWidth = panel.offsetWidth;
var currentLeft = panel.offsetLeft;
panel.style.width = (currentWidth - (event.clientX - currentLeft)) + "px";
}
function getSplitter() {
return document.getElementById('splitter');
}
var con = document.getElementById('container');
var splitter = document.createElement('div');
var glass = document.getElementById('glass');
splitter.className = 'splitter';
splitter.id = 'splitter';
con.insertBefore(splitter, con.lastElementChild);
splitter.addEventListener('mousedown', startDrag, false);
glass.addEventListener('mouseup', endDrag, false);
.container {
display: flex;
border: 1px solid;
width: 500px;
height: 300px;
position: absolute;
}
.c1 {
background-color: blue;
flex: 1;
height: 100%;
overflow: hidden;
}
.c2 {
background-color: green;
width: 150px;
}
.splitter {
width: 20px;
cursor: col-resize;
}
.glass {
height: 100%;
width: 100%;
cursor: col-resize;
display: none;
position: absolute;
}
.grandchild {
background-color: red;
width: 50px;
height: 50px;
}
<div id="container" class="container">
<div id="glass" class="glass"></div>
<div class="c1">
<div class="grandchild"></div>
</div>
<div id="c2" class="c2"></div>
</div>

It gets stuck at the size of the children
This is expected behavior when using a flexbox. I guess if you want to scroll to the end then you can use position: absolute for the grandchild relative to c1:
.grandchild {
background-color: red;
width: 50px;
height: 50px;
position: absolute;
top: 0;
left: 0;
}
Give overflow: hidden to c1 too:
.c1 {
background-color: blue;
flex: 1;
height: 100%;
position: relative;
overflow: hidden;
}
Cheers!
function startDrag() {
glass.style = 'display: block;';
glass.addEventListener('mousemove', drag, false);
}
function endDrag() {
glass.removeEventListener('mousemove', drag, false);
glass.style = '';
}
function drag(event) {
var splitter = getSplitter();
var panel = document.getElementById('c2');
var currentWidth = panel.offsetWidth;
var currentLeft = panel.offsetLeft;
panel.style.width = (currentWidth - (event.clientX - currentLeft)) + "px";
}
function getSplitter() {
return document.getElementById('splitter');
}
var con = document.getElementById('container');
var splitter = document.createElement('div');
var glass = document.getElementById('glass');
splitter.className = 'splitter';
splitter.id = 'splitter';
con.insertBefore(splitter, con.lastElementChild);
splitter.addEventListener('mousedown', startDrag, false);
glass.addEventListener('mouseup', endDrag, false);
.container {
display: flex;
border: 1px solid;
width: 500px;
height: 300px;
position: absolute;
}
.c1 {
background-color: blue;
flex: 1;
height: 100%;
position: relative;
overflow: hidden;
}
.c2 {
background-color: green;
width: 150px;
}
.splitter {
width: 20px;
cursor: col-resize;
}
.glass {
height: 100%;
width: 100%;
cursor: col-resize;
display: none;
position: absolute;
}
.grandchild {
background-color: red;
width: 50px;
height: 50px;
position: absolute;
top: 0;
left: 0;
}
<div id="container" class="container">
<div id="glass" class="glass"></div>
<div class="c1">
<div class="grandchild"></div>
</div>
<div id="c2" class="c2"></div>
</div>
Solution:
So I guess your strategy should be to use an absolute grandchild that fills the whole side-panel, and then put the content inside like:
<div class="grandchild">
<div class="content"></div>
</div>
and change these styles:
.grandchild {
position: absolute;
top: 0;
left: 0;
right: 0;
bottom: 0;
}
.grandchild .content{
background-color: red;
width: 50px;
height: 50px;
}
Example below:
function startDrag() {
glass.style = 'display: block;';
glass.addEventListener('mousemove', drag, false);
}
function endDrag() {
glass.removeEventListener('mousemove', drag, false);
glass.style = '';
}
function drag(event) {
var splitter = getSplitter();
var panel = document.getElementById('c2');
var currentWidth = panel.offsetWidth;
var currentLeft = panel.offsetLeft;
panel.style.width = (currentWidth - (event.clientX - currentLeft)) + "px";
}
function getSplitter() {
return document.getElementById('splitter');
}
var con = document.getElementById('container');
var splitter = document.createElement('div');
var glass = document.getElementById('glass');
splitter.className = 'splitter';
splitter.id = 'splitter';
con.insertBefore(splitter, con.lastElementChild);
splitter.addEventListener('mousedown', startDrag, false);
glass.addEventListener('mouseup', endDrag, false);
.container {
display: flex;
border: 1px solid;
width: 500px;
height: 300px;
position: absolute;
}
.c1 {
background-color: blue;
flex: 1;
height: 100%;
position: relative;
overflow: hidden;
}
.c2 {
background-color: green;
width: 150px;
}
.splitter {
width: 20px;
cursor: col-resize;
}
.glass {
height: 100%;
width: 100%;
cursor: col-resize;
display: none;
position: absolute;
}
.grandchild {
position: absolute;
top: 0;
left: 0;
right: 0;
bottom: 0;
}
.grandchild .content{
background-color: red;
width: 50px;
height: 50px;
}
<div id="container" class="container">
<div id="glass" class="glass"></div>
<div class="c1">
<div class="grandchild">
<div class="content"></div>
</div>
</div>
<div id="c2" class="c2"></div>
</div>