I'm using Background Check JS to try and get some text on my website to change based on the background being light or dark. I can't get it to work on my site to made a minimal replica of it and still no dice:
<html>
<head>
<style>
.background--light {
color: black;
}
.background--dark {
color: white;
}
.background--complex {
color: gray;
}
</style>
<script src="https://code.jquery.com/jquery-1.10.2.js"></script>
<script src="http://www.kennethcachia.com/background-check/scripts/background-check.min.js"></script>
<script>
document.addEventListener('DOMContentLoaded', function () {
BackgroundCheck.init({
targets: '.target',
});
});
</script>
</head>
<body>
<img src="http://www.kennethcachia.com/background-check/images/6.jpg">
<div style="position: fixed; top: 65%;" class="target">Why not white?</div>
</body>
</html>
Also sometimes an "CanvasRenderingContext2D': The canvas has been tainted by cross-origin data." Error pops up in this demo sometimes?
I may have missed something trivial in this demo but I can't get it to work at all on my "full" version I'm trying to write.
Related
I got a problem with tag. I have list of clickable phone numbers on the page and I want to mark used urls.
I created small example and tried to use :visited selector to change color for clicked urls, but it doesn't work.
Let me show the code:
<!DOCTYPE html>
<html>
<head>
<style type="text/css">
.phone:visited {
color: red;
}
.phone {
color: blue;
}
</style>
</head>
<body>
<h1>Hi</h1>
<a class="phone" href="tel:#">Call me</a>
</body>
</html>
I found in Google Chrome inspector, that css works correctly (I manually added "visited" class and url's color was changed), but browser doesn't mark url as visited after click.
Is there any chance to fix this behavior?
Thank you!
Nothing will happen on desktop, because desktop browsers don't know what to do with tel:.
You could use something like jQuery to achieve this on desktop.
$('.phone').click(function() {
$('.phone').css({"color": 'red'});
});
You have to assign class through jquery.
$('.phone').click(function () {
$(this).addClass("visited");
});
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<!DOCTYPE html>
<html>
<head>
<style type="text/css">
.visited {
color: red !important;
background-color: yellow;
}
.phone {
color: blue;
}
</style>
</head>
<body>
<h1>Hi</h1>
<a class="phone" href="#">Call me</a>
<a class="phone" href="#">Calling you</a>
</body>
</html>
So manage with javascript session and additional css class will be handle your problem
<style type="text/css">
.selected {
color: red !important;
}
.phone {
color: blue;
}
</style>
JS
<script type="text/javascript">
var a = document.getElementsByTagName("a");
//I assumed there is only one a link so tried with index 0
if(sessionStorage.getItem("visited") != null) a[0].classList.add("selected"); //check visited link then add class selected
a[0].addEventListener("click",function(){
sessionStorage.setItem("visited","true");//set session visited
this.classList.add("selected");
});
</script>
You need to declare .phone first before .phone:visited in your css.
I am currently facing a strange problem (well, most probably I am simply not aware of something important here).
I have the following html snippet
<div id="test">
Hallo Welt
</div>
And the following javascript snippet:
<script type="text/javascript">
$(function () {
$('#test').offset({
position: 'absolute',
width: '100px',
left: ($('body').width() - $('#test').width()) / 2.0
})
});
</script>
This should render the test div horizontally centered which works perfectly fine within the browser. When I try to print this page however, the element shows up on the right corner of the printed page and not in the middle.
I thought maybe theres something wrong about using pixels for positioning elements for printing so I tried other measures like em:
<script type="text/javascript">
$(function () {
$('body, #test').css({ 'font-size': '12px' });
$('#test').css({
left: (($('body').width() - $('#test').width() ) / 24.0) + 'em'
})
});
</script>
But unfortunately the result is all the same, no matter what browser I try...
What am I missing here?
#
In response to Adrian I made a sample as simple as possible to extract the problem reproducable for everyone.
<html>
<head>
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.3/jquery.min.js"></script>
<script>
$(function () {
$('#test').css({
background:'red',
position: 'absolute',
width: '100px',
left: ($('body').width() - 100) / 2.0
});
});
</script>
</head>
<body>
<div id="test">
Lord
</div>
</body>
</html>
I also observed that the position of #test within the printed document is dependant on the size of the browser window at the time of printing.
I am actually working with media queries as well in my real project. I was trying to convey an extremely simply sample as a showcase for the problem.
This is also interesting and the root of the evil in my opinion. Even though the printer uses its 100px from the print media query, its executed javascript returns that the test div ist still 100% which is just wrong in my opinion!!!
<html>
<head>
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.3/jquery.min.js"></script>
<script>
$(function () {
$('#test').text($('#test').width());
});
</script>
<style type="text/css">
#test {
width: 100%;
border: 1px solid black;
}
#media print {
#test {
width: 100px;
}
}
</style>
</head>
<body>
<div id="test"></div>
</body>
</html>
EDIT: Newer Solution with js only...
<html>
<head>
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.3/jquery.min.js"></script>
<script>
$(function () {
$('#test').css({
background:'red',
position: 'absolute',
width: '100px',
left: '50%',
marginLeft: '-50px'
});
});
</script>
</head>
<body>
<div id="test">
Lord
</div>
</body>
</html>
CSS solution
In this situation I would use CSS #media print {} to target printing.
Im assuming you have a reason for using javascript to build your CSS but if not I would recommend coding this in a totally different way. This shouldnt require javascript, nor should it require an absolute position.
Anyway , solution below...
<html>
<head>
<style>
#media print {
#test {
left:50% !important;
margin-left:-50px;
}
}
</style>
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.3/jquery.min.js"></script>
<script>
$(function () {
$('#test').css({
background:'red',
position: 'absolute',
width: '100px',
left: ($('body').width() - 100) / 2.0
});
});
</script>
</head>
<body>
<div id="test">
Lord
</div>
</body>
</html>
Can anyone suggest me a solution please? I've been trying half an hour to get jQuery ready and working for my Visual Studio but it does not work. I can't really be specific because i also don't know why.
<script>
$(document).ready(function () {
$("button").click(function () {
$("#square").animate({ left: '500px' }, slow);
});
});
</script>
<style>
#square{
border: solid; border-color: aqua; border-width: 1px; background-color: skyblue; width: 125px; height: 125px; text-align:center;
}
</style>
<body>
<div id="square">Focus on me!</div>
<div> <button>Click me</button> </div>
You have to add jquery to your page. You can add jQuery in two ways :
Download the jQuery library from jQuery.com
Include jQuery from a CDN, like Google
The jQuery library is a single JavaScript file, and you reference it with the HTML tag :
<head>
<script src="jquery-1.11.3.min.js"></script>
</head>
And for CDN :
<head>
<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.11.3/jquery.min.js"></script>
</head>
then write your code :
$(document).ready(function(){
alert("Hello there!")
});
Add this piece of code above the closing body tag.
<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.11.3/jquery.min.js"></script>
Now you have successfully added jQuery!
I'm new to html, just started doing it at school, and I'm trying to make this website just to test a few things. For some reason, it only works on JSFiddle. I am just trying to make the button glow on click. Here is the code:
<!DOCTYPE html>
<head>
<style media="screen" type="text/css">
img {
position: absolute;
margin: auto;
top: 0;
left: 0;
right: 0;
bottom: 0;
}
div#info_box {
height: 221px;
width: 221px;
}
</style>
<title>Test</title>
</head>
<body background="http://fc07.deviantart.net/fs70/f/2014/113/f/b/rain_by_matt74997-d7fn2e1.gif">
<div id="trigger">
<img src="http://i.imgur.com/8QLgeGP.png" onmouseover="this.src='http://i.imgur.com/BmjwX9A.png'" onmouseout="this.src='http://i.imgur.com/8QLgeGP.png'" />
</div>
<div id="info_box" style="display:none">
<img src="http://i.imgur.com/b3Holdt.png" alt="glow" height="221" width="221">
<span class="custom info">
</span>
</div>
<script type="text/javascript">
$(document).ready(function() {
$('div#trigger').click(function() {
//Get info_box
var info = $('div#info_box');
//Fade the box in during 1 sec, show it for 5, and let it fade out again
info.fadeIn(1000).delay(10).fadeOut(1000);
});
});
</script>
I tried using google chrome, internet explorer, looking through other answers, but I'm still not sure how to get it to work.
Google chrome says Uncaught Reference Error: $ is not defined
but I'm not sure what to do with that.
If more information could help please ask which and I'll put it up.
Please include Jquery to the top of the scripts as many plugin use it.
http://jquery.com/download/
Add this link to <head>
<script src="//ajax.googleapis.com/ajax/libs/jquery/1.11.0/jquery.min.js"></script>
You need jquery reference when using $
The JSTween library doesn't seem to perform a simple animation pulled from the library's tutorial. Using the following code, the alert box will show up after the allotted 1 second duration, but no animation will take place.
I must have set up the library wrong somehow, but I can't see the problem.
<html>
<head>
<style type="text/css">
#box
{
width: 16px;
height: 16px;
}
</style>
<script type="text/javascript" src="jquery-1.10.1.js"></script>
<script type="text/javascript" src="jstween-1.1.js" ></script>
<script type="text/javascript" src="jstween-1.1.min.js" ></script>
<script type="text/javascript">
function animate()
{
$('#box').tween({
width:{
start: 16,
stop: 200,
time: 0,
units: 'px',
duration: 1,
effect:'easeInOut',
onStop: function(){ alert( 'Done!' ); }
}
}).play();
}
</script>
</head>
<body>
<div id="box">
<img src="image.png" onClick="animate()" />
</div>
</body>
</html>
Additional info: using Safari on 10.7.5. Code does not work in Chrome or Firefox either.
For anyone who may read this in the future, I discovered the problem: the CSS element #box needs position: relative; as an attribute, otherwise the browser will hold the element in place by default.