I'm trying to get all the divs within a div with document.querySelectorAll. Interestingly, when I set in the JS the height to 1000, the explorer's scroller enlarges accordingly (only the balloon doesn't get bigger). What am I doing wrong?
'use strict';
var gElBalloons;
function init() {
gElBalloons = document.querySelectorAll('.balloons');
setInterval(moveBalloons, 1000);
}
function moveBalloons() {
for (var i = 0; i < gElBalloons.length; i++) {
gElBalloons[i].style.height = 1000 + 'px';
}
}
body {
margin: 10%;
}
.balloon-1 {
display: block;
width: 120px;
height: 145px;
background-color: red;
border-radius: 80%;
position: absolute;
}
.balloon-2 {
display: block;
width: 120px;
height: 145px;
background-color: blue;
border-radius: 80%;
left: 40%;
position: absolute;
}
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8" />
<meta http-equiv="X-UA-Compatible" content="IE=edge" />
<meta name="viewport" content="width=device-width, initial-scale=1.0" />
<title>Balloons</title>
<link rel="stylesheet" href="./css/main.css" />
</head>
<body onload="init()">
<div class="balloons">
<div class="balloon-1"></div>
<div class="balloon-2"></div>
</div>
<script src="./js/main.js"></script>
</body>
</html>
For now, I just want to test and make sure it works correctly.
It seems that your selector selected the wrong div. If you want to make the ball bigger, you should select balloon-1 and balloon-2 instead of their container balloons.
'use strict';
var gElBalloons;
function init() {
gElBalloons = document.querySelectorAll('.balloons > div');
setInterval(moveBalloons, 1000);
}
function moveBalloons() {
for (var i = 0; i < gElBalloons.length; i++) {
gElBalloons[i].style.height = 1000 + 'px';
}
}
body {
margin: 10%;
}
.balloon-1 {
display: block;
width: 120px;
height: 145px;
background-color: red;
border-radius: 80%;
position: absolute;
}
.balloon-2 {
display: block;
width: 120px;
height: 145px;
background-color: blue;
border-radius: 80%;
left: 40%;
position: absolute;
}
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8" />
<meta http-equiv="X-UA-Compatible" content="IE=edge" />
<meta name="viewport" content="width=device-width, initial-scale=1.0" />
<title>Balloons</title>
</head>
<body onload="init()">
<div class="balloons">
<div class="balloon-1"></div>
<div class="balloon-2"></div>
</div>
</body>
</html>
Related
This question already has answers here:
How do I re-trigger a WebKit CSS animation via JavaScript?
(9 answers)
Closed 4 months ago.
document.querySelector(".fall").addEventListener("click", function () {
document.querySelector(".ball").style.animation = "anim 2s forwards";
});
//my try below
document.querySelector(".up").addEventListener("click", function () {
document.querySelector(".ball").style.animation = "anim 2s forwards reverse";
});
body{
display: flex;
justify-content: center;
}
button{
margin-top: 150px;
margin-right: 20px;
padding: 5px;
}
.box{
height: 20px;
width: 100px;
background-color: royalblue;
position: absolute;
top: 100px;
}
.ball{
height: 20px;
width: 20px;
background-color: red;
border-radius: 50%;
position: absolute;
top: 0;
}
#keyframes anim {
100%{
top: 80px;
}
}
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8" />
<meta http-equiv="X-UA-Compatible" content="IE=edge" />
<meta name="viewport" content="width=device-width, initial-scale=1.0" />
<title>Document</title>
<link rel="stylesheet" href="style.css" />
</head>
<body>
<div class="ball"></div>
<div class="box"></div>
<button class="fall">Fall ↓</button>
<button class="up">Up ↑</button>
<script src="index.js"></script>
</body>
</html>
I wnna jump up smoothly this red ball by cliking Up ↑ button after clicking Fall ↓ button. I tride it by setting animation property with extra reverse but it's not working. It's jumping up suddenly. How can i achieve smooth jumping up transition by using only keyframes and javascript.
Here is my quick solution.
The animation was removed by setting animation as "" in animationend event listener.
The ball's top position is also set when related event listener is triggered.
const ball = document.querySelector(".ball");
const fallButton = document.querySelector(".fall");
const upButton = document.querySelector(".up");
fallButton.addEventListener("click", function() {
ball.style.animation = "anim 2s forwards";
ball.addEventListener("animationend", function() {
ball.style.top = "80px";
ball.style.animation = "";
});
});
upButton.addEventListener("click", function() {
ball.style.top = 0;
ball.style.animation = "anim 2s forwards reverse";
ball.addEventListener("animationend", function() {
ball.style.top = 0;
ball.style.animation = "";
});
});
body {
display: flex;
justify-content: center;
}
button {
margin-top: 150px;
margin-right: 20px;
padding: 5px;
}
.box {
height: 20px;
width: 100px;
background-color: royalblue;
position: absolute;
top: 100px;
}
.ball {
height: 20px;
width: 20px;
background-color: red;
border-radius: 50%;
position: absolute;
top: 0;
}
#keyframes anim {
100% {
top: 80px;
}
}
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8" />
<meta http-equiv="X-UA-Compatible" content="IE=edge" />
<meta name="viewport" content="width=device-width, initial-scale=1.0" />
<title>Document</title>
<link rel="stylesheet" href="style.css" />
</head>
<body>
<div class="ball"></div>
<div class="box"></div>
<button class="fall">Fall ↓</button>
<button class="up">Up ↑</button>
<script src="index.js"></script>
</body>
</html>
The blue block collapses and unfolds, and I need it to appear and perform an animation where it slides down
It's all about slideToggle(300) - this is the very animation of folding and unfolding. I don't want to change the code too much, what can I do about it?
html
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1">
<title>JS</title>
<link rel="stylesheet" href="stylet.css">
<script src="javat.js"></script>
<script src="jquery-3.6.0.min.js"></script>
</head>
<body>
<input type="button" class="content_toggles"\>
<input type="button" class="content_blocks"\>
</body>
</html>
css
body {
background-color: gray;
}
.content_toggles {
position: absolute;
z-index: 1;
width: 100px;
height: 100px;
background-color: yellow;
border: none;
border-radius: 10px;
background-image: url("img/builderhall1.png");
background-size: 100px;
background-repeat: no-repeat;
}
.content_blocks {
display: none;
position: absolute;
z-index: 2;
margin-top: 100px;
width: 100px;
height: 100px;
background-color: blue;
border: none;
border-radius: 10px;
}
jquery
$(document).ready(function(){
$('.content_toggles').click(function(){
$('.content_blocks').slideToggle(300);
document.getElementById("content_blocks").style.display = "block";
return false;
});
});
I'm not really sure what you're asking here - you should clarify by writing what the issue you're facing is, and what the expected result should be. However, I did notice that you're including your JS file before you load the jQuery library. Simply swap the order of these two lines, or else your javascript code won't work. This is because your javascript code uses jQuery, but you are loading your code before you initialize the jQuery library. Change your HTML to look like this:
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1">
<title>JS</title>
<link rel="stylesheet" href="stylet.css">
<script src="jquery-3.6.0.min.js"></script>
<script src="javat.js"></script>
</head>
<body>
<input type="button" class="content_toggles"\>
<input type="button" class="content_blocks"\>
</body>
</html>
I also noticed you are trying to access the content_blocks element by its ID, but you define it by class. Instead of document.getElementById("content_blocks").style.display = "block"; do
// vanilla JS
document.querySelector(".content_blocks").style.display = "block";
// jQuery
$('.content_blocks').style.display = "block";
Or you can do
<input type="button" id="content_toggles"\>
<input type="button" id="content_blocks"\>
Do you mean something like this?
$(document).ready(function(){
$('.content_toggles').click(function(){
$('.content_blocks').slideToggle(300);
});
});
body {
background-color: gray;
}
.content_toggles {
position: absolute;
width: 100px;
height: 100px;
background-color: yellow;
border: none;
border-radius: 10px;
background-image: url("img/builderhall1.png");
background-size: 100px;
background-repeat: no-repeat;
}
.content_blocks {
display: none;
position: absolute;
margin-top: 100px;
width: 100px;
height: 100px;
background-color: blue;
border: none;
border-radius: 10px;
}
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1">
<title>JS</title>
<link rel="stylesheet" href="stylet.css">
<script src="https://code.jquery.com/jquery-3.5.0.js"></script>
<script src="javat.js"></script>
</head>
<body>
<input type="button" class="content_toggles"\>
<input type="button" class="content_blocks"\>
</body>
</html>
I have just created a little testcode, you can find it here
http://paloula.de/test/width_002.html
It works fine under Chrome/Windows but not if you simulate a mobile phone under Chrome/Windows (e.g. Galaxy S5) or under Android mobile phone with Chrome: The page is scrolling left, but maximum of scrollLeft is not reached.
Is it the css? Is it the meta-tag? The calculation seems to be correct.
Any ideas? Thank you!
Full Code:
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8"/>
<meta name="viewport" content="width=device-width, height=device-height, initial-scale=1.0"/>
<style>
* {
margin: 0;
padding: 0;
}
HTML {
display: block;
position: relative;
height:100%;
}
BODY {
display: block;
position: relative;
min-height: 100%;
/* overflow-y: scroll; */
}
</style>
</head>
<body id="body">
<div style="background-color: #FF0000; display: block; position: relative; width: 1700px; height: 50px;">
<div style="background-color: #0000FF; display: block; position: absolute; width: 50px; height: 50px; right: 0"></div>
<div style="background-color: #FF00FF; display: block; position: absolute; width: 50px; height: 50px; left: 0"></div>
</div>
<script>
var scrollWidth = document.documentElement.scrollWidth;
var clientWidth = document.documentElement.clientWidth;
var offsetWidth = document.documentElement.offsetWidth;
console.log(scrollWidth);
console.log(clientWidth);
console.log(offsetWidth);
var maxScrollLeft = scrollWidth - clientWidth;
console.log("maxScrollLeft " + maxScrollLeft)
setTimeout(function() {
window.scrollTo(maxScrollLeft, 0);
}, 1);
setTimeout(function() {
window.scrollTo(0, 0);
}, 500);
</script>
</body>
</html>
The solution is to add minimum-scale=1 to the meta/viewport tag
<meta name="viewport" content="width=device-width, height=device-height, initial-scale=1.0, minimum-scale=1"/>
I am using HC-Sticky JavaScript plugin and trying to use the documented reinit method, but I don't understand how to run it.
Here is a CodePen showing a very basic setup and an attempt at running the reinit method right after the initialization, but the console always says that the
reinit function is not defined
How you would normally run a method in this situation?
Store your HC-Sticky instance in a variable, then you can use HC-Sticky's API:
var sticky = new hcSticky('.this-sticks', {
stickTo: 'main'
});
sticky.reinit();
OR access it via jQuery.data(...):
jQuery('.this-sticks').hcSticky({
stickTo: 'main'
});
jQuery('.this-sticks').data('hcSticky').reinit();
Example 1:
Using new hcSticky(...)
jQuery(document).ready(function() {
var sticky = new hcSticky('.this-sticks', {
stickTo: 'main'
});
sticky.reinit();
});
body {
margin-top: 300px;
}
header {
height: 300px;
background: black;
position: fixed;
top: 0;
right: 0;
left: 0;
}
section {
height: 100vh;
background: #ccc;
}
footer {
height: 400px;
background: black;
}
.this-sticks {
background: blue;
height: 100px;
}
<!doctype html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport"
content="width=device-width, user-scalable=no, initial-scale=1.0, maximum-scale=1.0, minimum-scale=1.0">
<meta http-equiv="X-UA-Compatible" content="ie=edge">
<title>HC Sticky Example</title>
</head>
<body>
<div>
<header></header>
<main>
<section class="this-sticks">sticky</section>
<section></section>
</main>
<footer></footer>
</div>
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.2.1/jquery.min.js"></script>
<script src="https://rawgit.com/somewebmedia/hc-sticky/master/dist/hc-sticky.js"></script>
</body>
</html>
Example 2:
Using jQuery(...).hcSticky(...)
jQuery(document).ready(function() {
jQuery('.this-sticks').hcSticky({
stickTo: 'main'
});
jQuery('.this-sticks').data('hcSticky').reinit();
});
body {
margin-top: 300px;
}
header {
height: 300px;
background: black;
position: fixed;
top: 0;
right: 0;
left: 0;
}
section {
height: 100vh;
background: #ccc;
}
footer {
height: 400px;
background: black;
}
.this-sticks {
background: blue;
height: 100px;
}
<!doctype html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport"
content="width=device-width, user-scalable=no, initial-scale=1.0, maximum-scale=1.0, minimum-scale=1.0">
<meta http-equiv="X-UA-Compatible" content="ie=edge">
<title>HC Sticky Example</title>
</head>
<body>
<div>
<header></header>
<main>
<section class="this-sticks">sticky</section>
<section></section>
</main>
<footer></footer>
</div>
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.2.1/jquery.min.js"></script>
<script src="https://rawgit.com/somewebmedia/hc-sticky/master/dist/hc-sticky.js"></script>
</body>
</html>
I'm simply trying to display a grid of boxes with each box having information about a dog breed. My problem is this: There appears to be a difference in behavior when I declare a style in-line vs the same style in a class. I'm confused why there is a difference, when there shouldn't be any as far as I know.
Here is the code behaving properly: http://imgur.com/a/z2b5c
This occurs with the code below. The code to note are the dogDisplay class declared in style, and the div of class dogDisplay in the body. The div has an in-line style="position:absolute".
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="viewport" content="width=device-width, initial-scale=1">
<link href="bootstrap-3.3.6-dist/css/bootstrap.min.css" rel="stylesheet">
<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.12.4/jquery.min.js"></script>
<script src="http://maxcdn.bootstrapcdn.com/bootstrap/3.3.6/js/bootstrap.min.js"></script>
<style>
.dogDisplay {
display: inline-block;
width: 300px;
height: 300px;
margin: 10px;
background-color: grey;
}
.dogName {
font-size: 20px;
text-align: center;
}
.img {
width: 200px;
height: 200px;
display: block;
margin-left: auto;
margin-right: auto;
}
.content {
background-color: red;
}
</style>
</head>
<script>
//This just loads the dog information from a JSON file
var dogInfo = [];
function displayInfo(dogBreeds) {
$("#container").append("<div class='dogDisplay'></div>");
}
window.onload = function() {
$.getJSON("breeds.json", function(json) {
var i;
console.log(typeof(json.dogBreeds));
dogInfo = json.dogBreeds;
displayInfo(json.dogBreeds);
})
}
</script>
<body>
<div class="well" style="height:300px"></div>
<div id="container" class="container" style="width:100%;background-color:lightblue;border:black 2px solid;">
<div class="dogDisplay" style="position:absolute">
<div class="content">
<p class="dogName">Dog Name</p>
<img class="img" src="images/place-holder.jpg" alt="Place-holder">
</div>
</div>
</div>
</body>
HOWEVER. When moving style="position:absolute" into the dogDisplay class, this is the new behavior: http://imgur.com/a/sv3Oh
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="viewport" content="width=device-width, initial-scale=1">
<link href="bootstrap-3.3.6-dist/css/bootstrap.min.css" rel="stylesheet">
<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.12.4/jquery.min.js"></script>
<script src="http://maxcdn.bootstrapcdn.com/bootstrap/3.3.6/js/bootstrap.min.js"></script>
<style>
.dogDisplay {
display: inline-block;
width: 300px;
height: 300px;
margin: 10px;
background-color: grey;
position: absolute;
}
.dogName {
font-size: 20px;
text-align: center;
}
.img {
width: 200px;
height: 200px;
display: block;
margin-left: auto;
margin-right: auto;
}
.content {
background-color: red;
}
</style>
</head>
<script>
var dogInfo = [];
function displayInfo(dogBreeds) {
$("#container").append("<div class='dogDisplay'></div>");
}
window.onload = function() {
$.getJSON("breeds.json", function(json) {
var i;
console.log(typeof(json.dogBreeds));
dogInfo = json.dogBreeds;
displayInfo(json.dogBreeds);
})
}
</script>
<body>
<div class="well" style="height:300px"></div>
<div id="container" class="container" style="width:100%;background-color:lightblue;border:black 2px solid;">
<div class="dogDisplay">
<div class="content">
<p class="dogName">Dog Name</p>
<img class="img" src="images/place-holder.jpg" alt="Place-holder">
</div>
</div>
</div>
</body>
Why is there a difference? Thank you!
In your first example, this line:
$("#container").append("<div class='dogDisplay'></div>");
Conflicts with the starting layout:
<div class="dogDisplay" style="position:absolute">
Meaning only the initial .dogDisplay will have the absolute positioning. In the second example, all of them will have the absolute positioning.