In one of my projects, I have requirement of multiple pop up div's on the same page. That means when user clicks on a link, some content should open in a pop up. There will be many such links with their own pop ups. With little knowledge of javascript, I have tried to write a javascript for it but it works only for one pop up. When I click on second, third... links, only first pop up opens rather than opening second, third... pop ups. Here is my code. Please tell the modifications to it.
<!DOCTYPE html>
<html >
<head>
<script>
window.document.onkeydown = function (e)
{
if (!e)
{
e = event;
}
if (e.keyCode == 27)
{
lightbox_close();
}
}
function lightbox_open()
{
window.scrollTo(0,0);
document.getElementById('light').style.display='block';
document.getElementById('fade').style.display='block';
}
function lightbox_close()
{
document.getElementById('light').style.display='none';
document.getElementById('fade').style.display='none';
}
</script>
<style>
#fade
{
display: none;
position: fixed;
top: 0%;
left: 0%;
width: 100%;
height: 100%;
background-color: #000;
z-index:1001;
-moz-opacity: 0.7;
opacity:.70;
filter: alpha(opacity=70);
}
#light
{
display: none;
position: absolute;
top: 50%;
left: 50%;
width: 300px;
height: 200px;
margin-left: -150px;
margin-top: -100px;
padding: 10px;
border: 2px solid #FFF;
background: #CCC;
z-index:1002;
overflow:visible;
}
</style>
</head>
<body>
Open 1
<div id="light">div 1</div>
<div id="fade" onClick="lightbox_close();"></div>
Open 2
<div id="light">div 2</div>
<div id="fade" onClick="lightbox_close();"></div>
Open 3
<div id="light">div 3</div>
<div id="fade" onClick="lightbox_close();"></div>
</body>
</html>
Here's a way to achieve what you want. I'm sure it can be improved, but it's up to you then.
First, IDs should be unique across the page. If you want to group elements, give them a shared class instead.
With the changes, your HTML would look like this:
Open 1
<div class="light">div 1</div>
<div class="fade" onClick="lightbox_close()"></div>
Open 2
<div class="light">div 2</div>
<div class="fade" onClick="lightbox_close()"></div>
Open 3
<div class="light">div 3</div>
<div class="fade" onClick="lightbox_close()"></div>
Your CSS:
html, body {
width: 100%;
height: 100%;
}
.fade {
display: none;
position: absolute;
top: 0;
left: 0;
width: 100%;
height: 100%;
background-color: #000;
z-index:1001;
-moz-opacity: 0.7;
opacity:.70;
filter: alpha(opacity=70);
}
.light {
display: none;
position: absolute;
top: 50%;
left: 50%;
width: 300px;
height: 200px;
margin-left: -150px;
margin-top: -100px;
padding: 10px;
border: 2px solid #FFF;
background: #CCC;
z-index:1002;
overflow:visible;
}
And your Javascript:
window.document.onkeydown = function (e) {
if (!e) {
e = event;
}
if (e.keyCode == 27) {
lightbox_close();
}
}
// Note that the function is receiving the clicked element reference.
function lightbox_open(el) {
window.scrollTo(0,0);
// All the anchors that have a class lightbox.
var anchors = document.querySelectorAll('a.lightbox');
// All the elements with class light.
var light = document.querySelectorAll('.light');
// All the elements with class fade.
var fade = document.querySelectorAll('.fade');
// Iterate over the anchors elements.
for (var i = 0; i < anchors.length; i++) {
// If the anchor matches the clicked one.
if (anchors[i] == el) {
// Look for the light and fade with the same index
// and display them.
light[i].style.display = 'block';
fade[i].style.display = 'block';
}
}
}
function lightbox_close() {
// All the elements with class light or fade.
var els = document.querySelectorAll('.light, .fade');
// Loop through the list.
for (var i = 0; i < els.length; i++) {
// Hide them.
els[i].style.display = 'none';
}
}
Demo
Related
I'm new to programming and currently working on my portfolio. I've created a dropdown list that appears when a user hovers over it. Once it appears I want to make the rest of the website darker so the dropdown list can stand out from the rest.
I'm trying to use the body::after pseudo class for that and it works but not when I hover over the dropdown so I must be doing something wrong. Could anyone please help me?
The dropdown list has a class of .dropdown
body::after {
content: "";
top: 0;
left: 0;
bottom: 0;
right: 0;
position: fixed;
background-color: black;
opacity: 0;
z-index: -1;
}
.dropdown:hover body::after {
opacity: 0.5;
}
Link to my project in case that helps:
https://annaxt.github.io/product_landing_page/plant_store.html
Thank you!
You could add the overlay as it's own element and then control the opacity using JavaScript. Everything you would want to show above it would need to have a z-index higher than what you're setting on the overlay and everything that would be affected by the overlay should have a lower z-index (default is 0).
let overlay = document.getElementById("overlay");
function showOverlay() {
overlay.style.zindex = 9;
overlay.style.opacity = 0.3;
}
function hideOverlay() {
overlay.style.zindex = -1;
overlay.style.opacity = 0;
}
#overlay {
content: "";
top: 0;
left: 0;
bottom: 0;
right: 0;
width: 100%;
height: 100%;
position: fixed;
background-color: black;
opacity: 0;
z-index: -1;
transition: opacity .8s;
}
.dropdown {
font-size: 50px;
background: #369;
color: white;
font-family: sans-serif;
}
<body>
<div class="dropdown" onmouseout="hideOverlay()" onmouseover="showOverlay()">Hover me</div>
<div id="overlay" />
</body>
I am not sure whether we can do this with css or not. but what you are trying to achieve can be easily done by js.
Below is code to help you.
$(document).ready(function() {
$(".dropdown").mouseenter(function() {
$("body").addClass("open");
});
$(".dropdown").mouseleave(function() {
$("body").removeClass("open");
});
});
.main {
display: flex;
}
.open {
height: 100%;
width: 100%;
background: #232323;
transition:.5s;
}
.dropdown {
background-color: #f5f5f5;
height: 200px;
width: 200px;
margin-right: 15px;
transition:.5s;
}
.main:hover .dropdown{
filter:blur(1px);
}
.main:hover .dropdown:hover {
background-color: red;
filter:blur(0);
}
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<body>
<div class="main">
<div class="dropdown">
dropdown1
</div>
<div class="dropdown">
dropdown2
</div>
<div class="dropdown">
dropdown3
</div>
<div class="dropdown">
dropdown4
</div>
</div>
</body>
I have some code here and I want the squares to go blue, green, indigo then go back to the beginning. Each time I click the button the colour will change. The code here goes blue, green, indigo and then changes between indigo and black while I want it to go to blue again. Is there a way of restarting the entire code again?
<--code for animated squares!-->
<!DOCTYPE html>
<html>
<style>
#container {
width: 400px;
height: 400px;
position: relative;
background: Black;
}
div#animate {
width: 50px;
height: 50px;
position: absolute;
left: 175px;
top: 0px;
background-color: Blue;
}
</style>
<style>
#containertwo {
width: 400px;
height: 400px;
position: relative;
background: Black;
}
div#animatetwo {
width: 50px;
height: 50px;
position: absolute;
left: 175px;
top: 175px;
background-color: Black;
}
</style>
<body>
<style>
#containerthree {
width: 400px;
height: 400px;
position: relative;
background: Black;
}
div#animatethree {
width: 50px;
height: 50px;
position: absolute;
left: 175px;
top: 350px;
background-color: Black;
}
</style>
<body>
<p>
<button onClick="button_click();button_clicktwo();button_clickthree()">Change Colour</button>
</p>
<div id ="container">
<div id ="animate"></div>
<div id ="animatetwo"></div>
<div id ="animatethree"></div>
</div>
<div id="box" onClick="button_click(j)();"></div>
<script>
var colors = ["Black","Black","Blue"];
function button_click() {
var box = document.getElementById("animate");
var background_color = box.style.backgroundColor;
var i = colors.indexOf(background_color);
if (i === colors.length-1) {
i = -1;
}
animate.style.backgroundColor = colors[i+1];
}
</script>
<div id="box" onClick="button_clicktwo();"></div>
<script>
var colorstwo = ["Green","Black","Black",];
function button_clicktwo() {
var box = document.getElementById("animatetwo");
var background_color = box.style.backgroundColor;
var i = colorstwo.indexOf(background_color);
if (i === colorstwo.length-1) {
i = -1;
}
animatetwo.style.backgroundColor = colorstwo[i+1];
}
</script>
<div id="box" onClick="button_clickthree();"></div>
<script>
var colorsthree = ["Black","Indigo","Black"];
function button_clickthree() {
var box = document.getElementById("animatethree");
var background_color = box.style.backgroundColor;
var i = colorsthree.indexOf(background_color);
if (i === colorstwo.length-1) {
i = -1;
}
animatethree.style.backgroundColor = colorsthree[i+1];
}
</script>
There's quite a bit of invalid and repetitive code, so for simplicity, I just reworked the entire thing. I'll note some of the problems below.
Since there were so many changes made to the HTML, CSS and JS, I won't list them all, but will leave it to you to observe the differences.
// Gather the colors and elements, and set a shared `i` to `0`
var colors = ["Blue", "Green", "Indigo"];
var elems = document.querySelectorAll(".animate");
var i = 0;
// Have a single function that makes the current element black and the next
// one a different color
function button_click() {
elems[i].style.backgroundColor = "Black";
if (++i === colors.length) {
i = 0
}
elems[i].style.backgroundColor = colors[i];
}
#container {
width: 400px;
height: 400px;
position: relative;
background: Black;
}
.animate {
width: 50px;
height: 50px;
left: 175px;
position: absolute;
}
.animate:nth-child(1) {
top: 0px;
background-color: Blue;
}
.animate:nth-child(2) {
top: 175px;
}
.animate:nth-child(3) {
top: 350px;
}
<p>
<button onClick="button_click();">Change Colour</button>
</p>
<div id="container">
<div class="animate"></div>
<div class="animate"></div>
<div class="animate"></div>
</div>
Note that there are other ways to do this too, like having each color set in the CSS, and then setting the visibility to hidden or visible with JavaScript.
Some of the general problems were:
the same ID attribute used more than once
an extra <body> tag
lots of repeating CSS, JS and HTML that was able to be greatly reduced
Hope someone can help me, I don't know where to look it up
I'm trying to do an onclick event that will change the position of 3 Divs.
The DIVS are placed like on a hoizontal circle, which means the one in the middle should be z-index: 1
left and right z-index: -1
onclick, the left should slide to the middle and change z-index
right go to the left and middle to the right.
How can I try to do that?
Started like this, but will not change position correctly.
jsFiddle
code snippet:
var i = 0;
while(i < (threeleft-50)){
var plus = (i)%2;
three.style.left = (threeleft-i)+'px';
two.style.left = (twoleft+plus)+'px';
one.style.left = (oneleft+plus)+'px';
i++;
}
Also still need a little of animation if there is a better way to do that, let me know
Thanks so far
One issue is that during the while the screen is not updated so you will only see the final position and not the animation. Then the plus = i%2 will always return 0 or 1. so that is what gets added to the two and one positions. (you most likely need var plus = i/2; there)
In general i would use CSS for positioning/animating (through transitions) the elements and just changes classes with JS. Much cleaner and more maintainable.
function goleft() {
var one = document.querySelector('.pos-one'),
two = document.querySelector('.pos-two'),
three = document.querySelector('.pos-three');
one.classList.remove('pos-one');
one.classList.add('pos-two');
two.classList.remove('pos-two');
two.classList.add('pos-three');
three.classList.remove('pos-three');
three.classList.add('pos-one');
}
function right() {
var one = document.querySelector('.pos-one'),
two = document.querySelector('.pos-two'),
three = document.querySelector('.pos-three');
one.classList.remove('pos-one');
one.classList.add('pos-three');
two.classList.remove('pos-two');
two.classList.add('pos-one');
three.classList.remove('pos-three');
three.classList.add('pos-two');
}
.wrapper {
position: relative;
width: 800px;
height: 400px;
margin-top: 100px;
margin-left: auto;
margin-right: auto;
background-color: grey;
}
.pic {
width: 300px;
height: 300px;
position: absolute;
border: 3px solid black;
transition: all 0.5s;
}
#one {
background-color: red;
}
#two {
background-color: blue;
}
#three {
background-color: green;
}
.pos-one {
z-index: 150;
top: 50px;
left: 250px;
}
.pos-two {
z-index: 50;
top: 40px;
left: 50px;
}
.pos-three {
z-index: 50;
top: 40px;
left: 450px;
}
#bot {
position: absolute;
bottom: 0px;
left: 360px;
}
<div class="wrapper">
<div class="pic pos-one" id="one">1</div>
<div class="pic pos-two" id="two">2</div>
<div class="pic pos-three" id="three">3</div>
<div id="bot">
<button onclick="goleft()">left</button>
<button onclick="right()">right</button>
</div>
</div>
I am learning javascript these days and I have a little problem with my code.
I have three elements on page wrapper1, wrapper2 and wrapper3 and every of these has its triggerand redbox element.
My goal is when the trigger is hit, it will show the redbox element corresponding to number.
Examples:
clicking trigger1 inside wrapper1 element shows up redbox1 element,
trigger2 inside wrapper2 element shows up redbox2 element etc.
The problem is, when I click on trigger3 for example it always shows redbox1 element. (as example shows).
What I am doing wrong? I am just a begginer.
function showTheRedBox() {
var theRedBox = document.getElementsByClassName('redbox');
theRedBox[0].style.display = 'block';
}
body {background: #222;}
.wrapper {
background: yellow;
width: 100px;
height: 100px;
}
.trigger {
background: blue;
width: 50px;
height: 50px;
position: absolute;
margin-top: 50px;
margin-left: 50px;
}
.redbox {
background: red;
width: 200px;
height: 100px;
margin-left: 100px;
position: absolute;
display: none;
}
<div class="wrapper">
<div class="trigger" onclick="showTheRedBox();">trigger1</div>
<div class="redbox">hurrah1</div>
wrapper1</div>
<div class="wrapper">
<div class="trigger" onclick="showTheRedBox();">trigger2</div>
<div class="redbox">hurrah2</div>
wrapper2</div>
<div class="wrapper">
<div class="trigger" onclick="showTheRedBox();">trigger3</div>
<div class="redbox">hurrah3</div>
wrapper3</div>
You can use a for loop and a closure to access the .wrapper information for each onclick event. This method will work whether there are the same amount of children or not, and will always show the correct child.
Also, it is best to not use inline JavaScript attributes (e.g. onclick="showTheRedBox();") you should always assign your event handlers in your script for readability and maintainability.
var wrappers = document.querySelectorAll('.wrapper'), i;
var redboxes = document.querySelectorAll('.redbox');
for(i = wrappers.length - 1; i >= 0; --i) {
(function(wrapper){
wrapper.querySelector('.trigger').onclick = function() {
hideAll();
wrapper.querySelector('.redbox').style.display = 'block';
}
})(wrappers[i]);
}
function hideAll() {
for(i = redboxes.length - 1; i >= 0; --i) {
redboxes[i].style.display = 'none';
}
}
var wrappers = document.querySelectorAll('.wrapper'), i;
var redboxes = document.querySelectorAll('.redbox');
for(i = wrappers.length - 1; i >= 0; --i) {
(function(wrapper){
wrapper.querySelector('.trigger').onclick = function() {
hideAll();
wrapper.querySelector('.redbox').style.display = 'block';
}
})(wrappers[i]);
}
function hideAll() {
for(i = redboxes.length - 1; i >= 0; --i) {
redboxes[i].style.display = 'none';
}
}
body {background: #222;}
.wrapper {
background: yellow;
width: 100px;
height: 100px;
}
.trigger {
background: blue;
width: 50px;
height: 50px;
position: absolute;
margin-top: 50px;
margin-left: 50px;
}
.redbox {
background: red;
width: 200px;
height: 100px;
margin-left: 100px;
position: absolute;
display: none;
}
<div class="wrapper">
<div class="trigger">trigger1</div>
<div class="redbox">hurrah1</div>
wrapper1</div>
<div class="wrapper">
<div class="trigger">trigger2</div>
<div class="redbox">hurrah2</div>
wrapper2</div>
<div class="wrapper">
<div class="trigger">trigger3</div>
<div class="redbox">hurrah3</div>
wrapper3</div>
This method will also work, but it will use more memory as it queries the DOM once more than the above solution.
var wrappers = document.querySelectorAll('.wrapper'), i;
var redboxes = document.querySelectorAll('.redbox');
for(i = wrappers.length - 1; i >= 0; --i) {
wrappers[i].querySelector('.trigger').onclick = function() {
hideAll();
this.parentNode.querySelector('.redbox').style.display = 'block';
}
}
function hideAll() {
for(i = redboxes.length - 1; i >= 0; --i) {
redboxes[i].style.display = 'none';
}
}
var wrappers = document.querySelectorAll('.wrapper'), i;
var redboxes = document.querySelectorAll('.redbox');
for(i = wrappers.length - 1; i >= 0; --i) {
wrappers[i].querySelector('.trigger').onclick = function() {
hideAll();
this.parentNode.querySelector('.redbox').style.display = 'block';
}
}
function hideAll() {
for(i = redboxes.length - 1; i >= 0; --i) {
redboxes[i].style.display = 'none';
}
}
body {background: #222;}
.wrapper {
background: yellow;
width: 100px;
height: 100px;
}
.trigger {
background: blue;
width: 50px;
height: 50px;
position: absolute;
margin-top: 50px;
margin-left: 50px;
}
.redbox {
background: red;
width: 200px;
height: 100px;
margin-left: 100px;
position: absolute;
display: none;
}
<div class="wrapper">
<div class="trigger">trigger1</div>
<div class="redbox">hurrah1</div>
wrapper1</div>
<div class="wrapper">
<div class="trigger">trigger2</div>
<div class="redbox">hurrah2</div>
wrapper2</div>
<div class="wrapper">
<div class="trigger">trigger3</div>
<div class="redbox">hurrah3</div>
wrapper3</div>
The problem you have was that the method "getElementsByClassName", returns you an Array that contains all the elements of that class. So, when you where doing this:
theRedBox[0].style.display = 'block'
You were changing the display style of the First element of the Array, in this case "wrapper1".
Here's a modify version that functions whit the others wrappers:
<!DOCTYPE html>
<html lang = 'es'>
<head>
<title> MY TEST </title>
<style>
body {
background: #222;
}
.wrapper {
background: yellow;
width: 100px;
height: 100px;
}
.trigger {
background: blue;
width: 50px;
height: 50px;
position: absolute;
margin-top: 50px;
margin-left: 50px;
}
.redbox {
background: red;
width: 200px;
height: 100px;
margin-left: 100px;
position: absolute;
display: none;
}
</style>
</head>
<body>
<div class="wrapper">
<div class="trigger" onclick="showTheRedBox(0)">trigger1</div> <!-- When the onClick event is trigered the function "showTheRedBox receives a parameter , that parameter is the position of the element in the Array "theRedBox"-->
<div class="redbox">hurrah1</div>
wrapper1
</div>
<div class="wrapper">
<div class="trigger" onclick="showTheRedBox(1)">trigger2</div>
<div class="redbox">hurrah2</div>
wrapper2
</div>
<div class="wrapper">
<div class="trigger" onclick="showTheRedBox(2)">trigger3</div>
<div class="redbox">hurrah3</div>
wrapper3</div>
<script>
function showTheRedBox(wrapperNumber) {
var theRedBox = document.getElementsByClassName('redbox');
theRedBox[wrapperNumber].style.display = 'block';
}
</script>
</body>
</html>
I am working on a project to make angled divs where the break between each basic panel on a page is an angle if the div has a background-image on the previous div, and a background-color of green on the next div.
I know I can't select pseudo classes directly so I decided to use the .addClass() to show and hide the angle.
The problem is my comparisons either turn all divs green, or adds angles to all the divs. I think most of my problem is in my approach, but I'm not sure where I am going wrong.
Here is the JS and the jQuery so far, I'm just trying to make the comparison work so it is still rough:
$(function() {
green = $('div').css("background-color", "rgb(0,255,0)");
if ($('.box').prev() === green)
{
$(this).addClass('withTop withoutTop');
//if ($(this).css("background-color") == green)
}
});
I have used regex to strip all but digits from the rgb but it seems to have the same effect. Thanks in advance and here is the link to the codepen.
http://codepen.io/AnomalousDevs/pen/GJmrrw
CSS and markup
$(function() {
green = $('div').css("background-color", "rgb(0,255,0)");
if ($('.box').prev() === green) {
$(this).addClass('withTop withoutTop');
//if ($(this).css("background-color") == green)
}
});
.box {
height: 100px;
width: 100%;
/*background-color: rgb(0,255,0);*/
position: relative;
}
.box:nth-of-type(5) {
background-color: green;
/* background-image:url("http://www.google.com/imgres?imgurl=http://dreamatico.com/data_images/guitar/guitar-6.jpg&imgrefurl=http://dreamatico.com/guitar.html&h=851&w=1280&tbnid=DVUGPDoyiOu4sM:&zoom=1&docid=OlLKDKDUUigDoM&hl=en&ei=iqJzVcaEOcvAtQXW-oO4Cw&tbm=isch&ved=0CDwQMygKMAo");*/
}
.box:nth-of-type(4) {
background: red;
position: relative;
}
.box:nth-of-type(3) {
background: blue;
}
.box:nth-of-type(2) {
background: rgb(0, 255, 0);
}
.box:nth-of-type(1) {
background: lightblue;
}
.withTop::before {
content: '';
position: absolute;
background: black;
width: 100%;
/*top:-16px;*/
height: 30px;
left: 0;
transform: skewY(-1.3Deg);
z-index: 1;
}
.withoutTop::after {
content: '';
position: absolute;
background: black;
width: 100%;
height: 30px;
left: 0;
transform: skewY(2Deg);
}
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<section class="parent">
<div class="box"></div>
<div class="box"></div>
<div class="box"></div>
<div class="box"></div>
<div class="box withTop"></div>
</section>
Your question is not clear but I think that what you are trying to achieve is adding a class to the .box after the green one.
Suggestion of base logic you should do:
$(function() {
var boxes = $('.box'),
greenBox = '';
//for each box
boxes.each(function(index) {
//if this box is the green one
if ($(this).css("background-color") === "rgb(0, 255, 0)") {
greenBox = $(this);
//addClass to the next one
$(this).next().addClass('withTop');
}
});
});
.box {
height: 100px;
width: 100%;
/*background-color: rgb(0,255,0);*/
position: relative;
}
.box:nth-of-type(5) {
background-color: green;
/* background-image:url("http://www.google.com/imgres?imgurl=http://dreamatico.com/data_images/guitar/guitar-6.jpg&imgrefurl=http://dreamatico.com/guitar.html&h=851&w=1280&tbnid=DVUGPDoyiOu4sM:&zoom=1&docid=OlLKDKDUUigDoM&hl=en&ei=iqJzVcaEOcvAtQXW-oO4Cw&tbm=isch&ved=0CDwQMygKMAo");*/
}
.box:nth-of-type(4) {
background: red;
position: relative;
}
.box:nth-of-type(3) {
background: blue;
}
.box:nth-of-type(2) {
background: rgb(0, 255, 0);
}
.box:nth-of-type(1) {
background: lightblue;
}
.withTop::before {
content: '';
position: absolute;
background: black;
width: 100%;
/*top:-16px;*/
height: 30px;
left: 0;
transform: skewY(-1.3Deg);
z-index: 1;
}
.withoutTop::after {
content: '';
position: absolute;
background: black;
width: 100%;
height: 30px;
left: 0;
transform: skewY(2Deg);
}
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<section class="parent">
<div class="box"></div>
<div class="box"></div>
<div class="box"></div>
<div class="box"></div>
<div class="box withTop"></div>
</section>