Consider the code given below
<body>
<div>
Google
Gmail
fb
</div>
</body>
If I want to select <a> tags without using any class and and want to give different properties to them,is there any way?
a { } // all the links
a + a { } // second link
a + a + a { } // third link
or
a:first-child { } // first link
a:last-child { } // last link
With CSS you can check the href attribute like this:
a[href^="http://www.g"] {
color: red;
}
JSFiddle
^= means "starts with this".
$= means "ending with this".
*= means "contains this".
I suppose you could do:
document.body.children[0].children[0] // Google link
document.body.children[0].children[1] // Gmail link
document.body.children[0].children[2] // FB link
However this is a really bad idea because as soon as you change your HTML structure you will have to rewrite all of your code.
If you are trying to do it with CSS, I'd say:
a:nth-of-type(2){color:black;} // Select the second
a:fist-child { color:red;} // Select the first
a:last-child { color:blue;} // Select the last
You can always declare CSS inside of the tags themselves, like this:
Link Here
use jquery (http://www.jquery.com)
it's the famous JavaScript library to manipulate with the DOM
ex:
$("a") select all the link .
$("a:contains['Gmail']") select the link with text gmail
Related
I'm pretty new to react-js or css and i want to hide a css object.
This is the code
I tried to hide (make it unclickable) the object with this code
.react-aria9431256528-7
{
display: none;
}
but this only works temporary. Every time i load the site, the id changes. How can i reference this object in way that it will always work? I was thinking about the aria-label since it is constant but how to i reference it?
Is there a better way than just to hide it?
If the aria-label attribute is unique, you can use the attribute selector syntax ([attr="value"]) as follows:
[aria-label="Help"] {
display: none;
}
Help
You can use this for example.
a[id^="react-"] {
display: none;
}
a[id^="react-"] {
display: none;
}
<div>
<a id="react-area1">1</a>
<a id="react-area1">2</a>
<a id="react-area1">3</a>
<a id="area1">4</a>
</div>
Is it the link (a href='...') that you're trying to hide? You could use the aria-label as already said. Here is another solution :
I've noticed that there is a parent div with a class "dropddown". You could target your link with css like below:
.dropddown > a {
display:none;
}
That should do it normally. If not add the important flag :
.dropddown > a {
display:none !important;
}
PS, don't forget to fix the naming of the class dropddown by the way (one d) => "dropdown". That makes me believe that you have control over it ;).
I have a Html page which has anchor tag, I Need to remove certain style applied already in html page for anchor tag while the html page is opened throw Iframe.
HTML Content as below:
<html>
<body>
<div>some content<a href="http://www.website.com" name="test1"/> some content </div>
</body>
</html>
I tried as below:
a[name^="test1"]:before{
content:"[prefix text]";
display:inline;
color:red;
}
a[name^="test1"]:after{
content:"suffix text";
display:inline;
color:green;
}
iframe a[name^="test1"]:before{
display:none;
}
iframe a[name^="test1"]:after{
display:none;
}
But inside "iframe" also these styles has been applying.
You have to first detect if your page is rendered inside an iframe and in that case apply an alternative CSS. It' can't be done with vanilla CSS then it has to be done with some JavaScript:
<script type="text/javascript">
function getTopWindow() {
try {
return window.top;
} catch {
// If we can't access window.top then browser is restricting
// us because of same origin policy.
return true;
}
}
function isRendererdInFrame() {
// If top window is null we may safely assume we're in iframe
return window.self !== getTopWindow();
}
function loadCss(location) {
if(document.createStyleSheet) {
document.createStyleSheet('http://server/stylesheet.css');
} else {
var styles = "#import url('" + location + "');";
var newSS=document.createElement('link');
newSS.rel='stylesheet';
newSS.href='data:text/css,'+escape(styles);
document.getElementsByTagName("head")[0].appendChild(newSS);
}
}
</script>
Code to load CSS from JavaScript is from How to load up CSS files using Javascript?.
With all that code you may simply write (even just after that inside <script> block):
var cssToLoad = isRendererdInFrame() ? "iframe.css" : "not-iframe.css";
loadCss("http://server/" + cssToLoad);
Of course same technique can be applied to patch CSS with iframe specific styles:
if (isRenderedInFrame())
loadCss("http://server/iframe-patch.css");
i dont know how to detect if page is opened in iframe or not, but there is one possible(not very nice) workaround, you can set iframe to width which is not commonly used by devices (example 463px) and then set media query for this resolution which apply when content is shown in this iframe. This is really nasty way since its not 100% and i would not recommending that.
I'm noot good in english, so the title may seem a bit odd.
I want to use css function attr() like this:
I mean i have a container <div> and an inner <div> that i want to have width depending on data-width attribute. For example this would be great, but this doesnt work:
<div class="container">
<div data-width="70%">
</div
</div>
.container {
width: 600px;
height: 200px;
}
.container div {
width: attr(data-width);
height: 100%;
}
Is there any noJS way to use attributes like that?
UPDATE: Guys convinced me that the JS is the only way to do this :)
That's not a big problem (but that's bad. CSS, why youre so illogical? Is the difference between content:attr(data-width) and width: attr(data-width) so big ?).
One of the guys had an idea to go through the all elements with jQuery.
That's ok, but it is very... local? Don't know how to say it in english.
Anyway, i remaked his code a little bit and here it is:
allowed = ['width','color','float'];
$(document).ready(function () {
$('div').each(function (i, el) {
var data = $(el).data(),style = '';
if (!$.isEmptyObject(data)) {
$.each(data, function (attr, value) {
if (allowed.indexOf(attr) != - 1) {
style += attr + ': ' + value + '; ';
}
})
if (style.length != 0) {
$(el).attr('style', style);
}
}
})
})
Idea is simple:
1. We suppose that style we want to add to an element is the only one. I mean there are no scripts that will try to add some other styles,
2. We create an array of allowed attribute names, we need to avoid using wrong names at the style attribute, for example style="answerid: 30671428;",
3. We go through each element, save its data attributes in an object, check if object is empty, and if not - check every attribute if it is allowed, create a string that contains all styles that we need, and - finally - add our style string to the element as the content of style attribute.
That's all, thanks everybody
I would not advise to use CSS alone since it will not allow you to do what you're looking for... instead use a scripting language (in my case jQuery) to accomplish this functionality for you like so: jsFiddle
jQuery
jQuery(document).ready(function(){
var dataElem; // to store each data attribute we come accross
jQuery('div').each(function(){ //loop through each div (can be changed to a class preferably)
dataElem = jQuery(this); //get the current div
if(dataElem.data('width')){ //make sure it exists before anything further
dataElem.width(dataElem.data('width')); //set the element's width to the data attribute's value
dataElem.css("background-color", "yellow");
}
});
});
HTML
<p>The links with a data-width attribute gets a yellow background:</p>
<div>
w3schools.com
</div>
<div class="me" data-width="50"> <!-- change value to see the difference -->
disney.com
</div>
<div>
wikipedia.org
</div>
Notes on the above:
each, data, width.
Instead of doing data-width, use a class attribute. An html tag can have mutliple classes separated by spaces, so if you wanted to be very precise, you could set up as many classes as you need. For instance:
<div class="w70 h100">
</div>
Then in your css:
.w70{
width: 70%;
}
.h100{
height: 100%;
}
And so on.
Is there any noJS way to use attributes like that?
No, you cannot use CSS to set the width of the element to it's data-width attribute. CSS does not allow for this as attr() is only currently available for the CSS content property which is only available on css pseudo elements (::before and ::after).
How can you achieve this with as little javascript as possible?
This is extremely easy to do using the native host provided DOM API.
Select the elements using Document.querySelectorAll().
Iterate the elements and apply the styles using Element.style which can be retrieved from the data-width attribute using Element.dataset
(Demo)
var items = document.querySelectorAll('#container div'), item, i;
for(i = 0; (item = items[i]); i++) item.style.width = item.dataset.width;
I' like to add a different background image to certain pages - is there a way to adjust the following notation:
body {background: url('someimage.jpg');
to
someselector body:url('somedifferentimage.jpg');
perhaps a way to select based on the title or the html doc name?
Normally what you'd do is make a different stylesheet for each page and add the declaration. So just:
body {
background-image: url('somedifferentimage.jpg');
}
Linked to by the page you want to override. If that's not possible and a little more progressive enhancement is an option, you could try JavaScript of some ilk:
document.body.style.backgroundImage = "url('" + document.title + ".jpg')";
for example.
Add a class to your body tag where you want the custom style.
css:
.customBody {
background-image: url('somedifferentimage.jpg');
}
html:
<body class="customBody">
The more commonly-accepted way is to put a class on the body element:
<body class="specialpage">
And then apply the background only to <body>s of that class.
body.specialpage { background-image: url(...); }
I'm creating a tumblr them and I have to write an external CSS file but I am having trouble editing the css style of the post elements.
This its structure:
<li class="post quote">
{other code}
</li>
The problem is that the class name has a space in it.
How would I create a CSS class to access this? And yes, I know I can just put a style attribute in the element tag but I was kind of hoping for another option.
The problem is that the class name has a space in it.
This is not possible in CSS. What you are doing is giving the element two classes.
You can address them such:
.post.quote { .... }
but in your case, it's probably better to use a valid separator like
post_quote
This element actually has two classes - it is marked with both the post class and the quote class. So, you can use the following selectors to access it:
// css
.post { ... } // elements with the post class
.quote { ... } // elements with the quote class
// jQuery
var postLis = $('.post');
var quoteLis = $('.quote');
You can also stack selectors to return all elements which meet all conditions in the selector, by including the different selectors together:
// css
.post.quote { ... } // elements with both the post and quote classes
// jQuery
var postAndQuoteLis = $('.post.quote');
This might work:
$('li').each(function() {
if($(this).attr('class').indexOf(" ")>-1) {
$(this).css('border','1px solid #ff0000')
}
}