I am aware I can use background-image: url("www.linktoimage.com/image.png"), in css, to place an image in the background. I also know I can add a javascript file into html with tag. My challenge is how do I apply css characteristics of a background image to my javascript file?
To add some context, the javascript file is a simple animation (randomly bouncing balls, that responds to the screen width and height. I want to place text on top of this as if it was background, but no matter what I do, text will place itself above the script, in a white box, instead of directly on top of my script. Below is the general result of my various attempts:
I would like to place "Welcome" on top of my javascript, as oppose to how it currently appears on top of window with a white background. My css is as follows:
#font-face {
font-family:'HighTide';
src: url('assets/HighTide.otf')
font-family:'HighTideSans';
src: url('assets/HighTideSans.otf')
}
body {
padding: 0;
margin: 0;
}
canvas {
vertical-align: top;
z-index: -1
}
.title {
font-family:'HighTide';
font-size: 10vw;
margin: auto;
text-align: center;
z-index: 1;
}
.enter {
font-family:'HighTideSans';
font-size: 2vw;
text-align: center;
margin: auto;
z-index: 1;
}
And here is the html:
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>LockeDesign</title>
<script src="libraries/p5.js" type="text/javascript"></script>
<script src="libraries/p5.dom.js" type="text/javascript"></script>
<script src="libraries/p5.sound.js" type="text/javascript"></script>
<script src="libraries/svg.js" type="text/javascript"></script>
<script src="main.js" type="text/javascript"></script>
<link rel="stylesheet" href="style.css">
</head>
<body>
<div class=title> WELCOME </div>
<a href="main.html" class=enter> </a>
</body>
</html>
Any suggestions are appreciated, thank you!
EDIT
Using position: absolute; works partially, all I had to do was add left: 0;
right: 0; and bottom: 50%; to re-center the text. Resizing the window would cause scrollbars to appear, which was less than desirable, so I added overflow:hidden; to the body tag. Now this works exactly as intended, thanks all!
I would suggest WRAPPING all of the content you wish to display over the dynamic background in a single div
Example
<html>
<body>
<div id="BodyWrapper">
<h1> This is an HTML Page </h1>
</div><!-- End BodyWrapper -->
</body>
</html>
Then apply some Z positioning to the BodyWrapper with css
#BodyWrapper{position:absolute; top:0; left:0; width:100%; height:100%; z-index:5;}
If the above is still not enough then you may have to delay the
showing of the body content (make sure the dynamic background
completely loads first).
You can set the initial display styling of the wrapper to
#BodyWrapper{position:absolute; top:0; left:0; width:100%; height:100%; z-index:1; display:none;}
and onLoad... call this function
function show_PageBody()
{
setTimeout(function(){ update_Wrapper(); },1000);
function update_Wrapper()
{
document.getElementById('BodyWrapper').style.display='block';
document.getElementById('BodyWrapper').style.zIndex = 5;
}
}
You can add a css transition for the opacity of the BodyWrapper so that it fades onto the screen instead of just appearing.
This should work (has worked for me in the pass).
If not please let me know.
Using position: absolute; works partially, and renders this result:
All I had to do was add left: 0; right: 0; and bottom: 50%; to re-center the text. Also, resizing the window would cause scrollbars to appear, which was less than desirable, so I added overflow:hidden; to the body tag. Now this works exactly as intended:
Related
So I'm making a website where I have several divs that should slide either from right, left, or top when user clicks on specific button or nav items. However, none of those are working. None of the divs will slide over when I click on the button that are supposed to make them slide. I'm using pure javascript to perform those actions. So far, I've tried several actions. First, I thought it was because I didn't have window.onload, but after adding it, nothing changed. Then I though maybe the links were still carrying the default actions, so I tried to add e.preventDefault in hopes that was the problem, it also didn't work. Then I found out something weird that made think maybe it is my computer that is not interpreting javascript correctly(weird thought, I know. But I was just considering anything since I was running out of solutions).But actually, it turns out that my computer or the editor is not reading "document" or window in javascript. It says both of them are not defined, which is weird since I have linked the javascript file correctly at the end of the body. So I decided to run it on JSFiddle to check whether it was really just my computer. However, even in JSFiddle the divs still won't slide when I click the button to make them slide.
I'm out of ideas. Since the project I'm doing is big, I extracted the part of divs that are not sliding to make things easier. The div you guys will see, is supposed to slide from the left when we click on the same div.
Here is the html code:
<!DOCTYPE>
<html>
<head>
<title>Emanuel Inacio</title>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1">
<link rel="stylesheet" type="text/css" href="style.css">
<link href="https://fonts.googleapis.com/css? family=Roboto+Condensed:100,300,400" rel="stylesheet">
<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
</head>
<body>
<div id="home-page">
<div id="nav-bar"></div>
</div>
<script type="text/javascript" src="script.js"></script>
</body>
</html>
Here is the css code:
* {
margin: 0;
padding: 0;
box-sizing: border-box;
font-family: 'Roboto Condesed', 'San-serif';
}
#nav-bar {
width: 50%;
height: 100vh;
background-color: #000000;
transform: translateX(-50%);
transition: transform 0.5s;
}
.active {
transform: translateX(50%);
}
Finally, this is the javascript part:
var nav = document.getElementById("nav-bar");
window.onload = function () {
nav.addEventListener("click", function () {
nav.classList.toggle("active");
});
}
Every other div that is not working has pretty much the same code base as this one. Hence I decided to post only this div. Thanks in advance!
It's a specificity issue, ID is more specific than class so your style will never be applied. You need to adjust CSS like this:
var nav = document.getElementById("nav-bar");
window.onload = function() {
nav.addEventListener("click", function() {
nav.classList.toggle("active");
});
}
* {
margin: 0;
padding: 0;
box-sizing: border-box;
font-family: 'Roboto Condesed', 'San-serif';
}
#nav-bar {
width: 50%;
height: 100vh;
background-color: #000000;
transform: translateX(-50%);
transition: transform 0.5s;
}
#nav-bar.active {
transform: translateX(50%);
}
<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<div id="home-page">
<div id="nav-bar"></div>
</div>
I am using perfect scrollbar for custom scroll bar. It is working fine.
But the scrollbar is visible only when you mouse over on the container.
How do I make this visible all the time?
$('.container').perfectScrollbar();
Demo
From the perfectscrollbar wiki:
How can I make the scrollbars always visible?
The reason why it's hidden by default is that opacity: 0 is used.
Please change all references of it to opacity: 0.6. If using .scss,
modify the line #include opacity(0) to #include opacity(0.6) in the
scrollbar-rail-default mixin and run gulp build to build .css and
.min.css files.
If you're not willing to modify the CSS files but would like to make
it always visible, please add following lines anywhere after
perfect-scrollbar.css is loaded.
.ps-container > .ps-scrollbar-x-rail,
.ps-container > .ps-scrollbar-y-rail { opacity: 0.6; }
Also, an example code may be helpful to see how to achieve it.
Here is example https://github.com/noraesae/perfect-scrollbar/blob/master/examples/always-visible.html
So, if you modify your JSFiddle by pasting the following into your html, it works.
<div class="container">
<div class="content"></div>
</div>
<style>
.ps-container > .ps-scrollbar-x-rail,
.ps-container > .ps-scrollbar-y-rail { opacity: 0.6; }
</style>
In addition you have to make sure perfect-scrollbar is updated at the right time. If the content is loaded dynamically, call ps.update().
Warning, make sure the the call is made after your data is loaded, on VueJS I had to do it in the 'nextTick' function :
this.$nextTick(() => {
ps.update();
});
},
I guess a timeout may works too.
.ps__rail-x,
.ps__rail-y {
opacity: 0.6;
}
This worked for me.
Try this. This will work even if the container class doesn't exist in you application
.ps> .ps__scrollbar-x-rail, .ps> .ps__scrollbar-y-rail{
opacity: 0.6;
}
I'm using ngx-perfect-scrollbar in Angular 8 and fixed problem by adding the following styles
.ps > .ps__rail-x,
.ps > .ps__rail-y {
opacity: 0.6;
}
<!DOCTYPE html>
<html>
<head>
<meta http-equiv="content-type" content="text/html; charset=utf-8">
<title>perfect-scrollbar example</title>
<link href="../dist/css/perfect-scrollbar.css" rel="stylesheet">
<script src="../dist/js/perfect-scrollbar.js"></script>
<style>
h1 { text-align: center; }
.container { position:relative; margin:0px auto; padding:0px; width: 600px; height: 400px; overflow: auto; }
.container .content { background-color: red; width: 1280px; height: 720px; }
</style>
<style>
/* to make scrollbars always visible */
.always-visible.ps-container > .ps-scrollbar-x-rail,
.always-visible.ps-container > .ps-scrollbar-y-rail {
opacity: 0.6;
}
</style>
</head>
<body>
<h1>Default</h1>
<div class="container">
<div class="content">
</div>
</div>
<h1>Always visible</h1>
<div class="container always-visible">
<div class="content">
</div>
</div>
<script>
window.onload = function () {
[].forEach.call(document.querySelectorAll('.container'), function (el) {
Ps.initialize(el);
});
};
</script>
</body>
</html>
I had the same issue. Make sure you are rendering the content first and after that you are creating the scrollbars. No CSS changes are needed. I'm using perfect-scrollbar.jquery.js
Ok, so I have this html file (sec1_2.html).
<body>
<div id="nameContainer">
<input id="sect1Name">
</div>
<style type="text/css">
body {
margin: 0px;
padding: 0px;
}
div#nameContainer {
background: none repeat scroll 0% 0% #000;
height: 50px;
padding: 0;
margin: 0;
}
input#sect1Name {
width: 330px;
margin: 0;
height: 50px;
padding: 0;
}
</style>
Is a simple div with an input in it.
As you can see, the height on the div and on the input are the same (50px).
So when you display this page you get the input inside the div at the exact same height.
But, now I have this other html (index.html):
<!DOCTYPE html>
<html>
<body>
<div id="section1">
</div>
<script src="js/jquery-1.7.1.min.js"></script>
<script type="text/javascript">
$("#section1").load("sec1_2.html");
</script>
</body>
Now, here, I have an empty div where I load the external html (sec1_2.html).
When I do it like this, the (visible) height on the input increases!
I don't know why the input changes, if a let the input without height, both versions display the same height (default), but if I set a defined height, it will show a different height when loaded with jQuery.
Anyone knows why is this happening?
Hi for some reason your input is been rendered without one default property with the Jquery call, you can add this to your CSS:
input#sect1Name {
box-sizing:border-box;
}
This property is assigned for default in the html but not with Jquery.
http://plnkr.co/edit/6h8U9AQgFaNUb2plPbh6?p=preview
i am totally new in web design, and i am right now struggling with creating part of my website, i need to somehow make this happen:
When PART of the BODY BACKGROUND is HOVERED, make the background change to "B", and when the mouse is not over that part, I need it to change back to background "A".
I have seen some examples here but as i am a beginner, i have no idea how to use javascript, if you could please give me some light here, either on pure CSS or on how to apply javascript.
This is accomplished very easily using a third party javascript library called JQuery http://jquery.com, you can see a working example here: http://jsfiddle.net/bbp8G/
$(document).ready(function(){
$("#hover").mouseenter(function(){
$(this).css("background","#009900");
}).mouseleave(function(){
$(this).css("background","#ffffff");
});
});
Here's the easiest way I know how to do what you've described...
<!-- POSITION THIS DIV WHEREVER YOU WANT THE
USER TO HOVER SO THAT THE BACKGROUND WILL CHANGE -->
<div id="hover">
</div>
<!-- PUT THIS CODE IN YOUR <HEAD> -->
<script type="text/javascript" src="//ajax.googleapis.com/ajax/libs/jquery/1.10.1/jquery.min.js" />
<style>
#hover { width: 200px; height: 200px; position: relative; top: 200px; background: green; }
.myNewBackround { background-color: red; }
</style>
<script>
$(document).ready(function() {
// when the #hover DIV is hovered, change the background of the body
$('#hover').hover(function() {
$('body').addClass('myNewBackground');
});
});
</script>
Here's a JS FIDDLE:
http://jsfiddle.net/ZKaJn/
Or you can do it with pure CSS
<div id="left"> </div>
<div id="right"> </div>
And the CSS part:
#left
{
background-color:#000;
float:left;
width:50%;
height:200px;
}
#right
{
background-color:#FF0;
float:right;
width:50%;
height:200px;
}
#right:hover
{
background-color:#00F;
}
#left:hover
{
background-color:#F00;
}
You can replace the div's and values with whatever you like, the main part is the #right:hover and #left:hover
Actually with just css it is not possible to change the background of the body when hovering a DOM element. This is because CSS does not allow you (yet) to travel up the DOM tree (select a parent), only down (select a child).
That being said, it is however possible to mimic the effect, and it is even quiet easy if it is the body background you want to change. You can lay a pseudo element with a background on top of your body background, and underneath the actual content. This way it looks as if the body background has changed.
The css to achieve this would look something like this:
.hover-me:hover:after {
content: '';
top: 0;
left: 0;
right: 0;
bottom: 0;
position: fixed;
background: url(http://placekitten.com/600/300) center center;
background-size: cover;
z-index: -1;
}
And a small fiddle to demonstrate: http://jsfiddle.net/3dwzt/
Should be compatible with IE8 and up
<head>
<title>Overlay test</title>
<meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1" />
<style type="text/css">
#overlay {
position: absolute;
background-color: #ccffcc;
display: none;
height: 200px;
margin: 0 auto;
width: 200px;
}
</style>
<script type="text/javascript">
//<![CDATA[
function hide() {
document.getElementById("overlay").style.display = "none";
}
function show() {
document.getElementById("overlay").style.display = "block";
}
//]]>
</script>
so when the user clicks it runs show() which places the css box on top. However i want it to be centered in the browser. I've set the margin: 0 auto; which should be doing the trick shouldnt it?
I'm just trying to create an overlay function without using jquery because it seems to be incompatible with my schools cms templates.
Thanks
Margin: 0 auto won't work on position absolute elements, they exist in their own little world, outside of normal flow. So in order to pull this off, you need to do an extra step. The CSS dead centre technique will work here.
Try setting the top and left attributes on your overlay.
Use % to set top and left position. Set css attribute top:10%; Left 40%;