Is there any way to select elements with same attribute value which I don't exactly have access to? I imagine doing it in way like this:
.first[attribute=.second[attribute]]
I want to use ONLY pure CSS.
no, there is no way to achieve this using css
however, if you need to do something like this you should consider changing your markup (ex. using additional classes) - css is not a programming language
CSS cannot do that. For comparing two elements you need to have access to DOM.
We cannot achieve this through css but this can be done by JavaScript:
window.onload=function(){
var attr = 'elementValue',
elements=document.querySelectorAll('.first, .second');
console.log(
elements[0].getAttribute(attr) ===
elements[1].getAttribute(attr)
);
}
<div class="first" elementValue="1">hello</div>
<div class="second" elementValue="1">hello</div>
Hope this helps
Related
Is there a way to match an element that has no parent with specific selector ?
Specific use-case:
Theme is defined using 'theme' attribute.
It's required to have some part within the application with different theme.
So the DOM structure is something like:
<div theme="theme-A">
// ... theme-A content
<div theme="theme-B">
// ... theme-B content
</div>
// ... theme-A content
</div>
Components have a css for each theme, example:
[theme=theme-A] .my-component{...}
[theme=theme-B] .my-component{...}
My attempt of solving the problem was to prevent intermediate themes like so:
[theme=theme-A] :not([theme]) .my-component{...}
[theme=theme-B] :not([theme]) .my-component{...}
But this approach doesn't work because there are other elements without 'theme' attribute in the way.
I assume I need a kind of 'greedy' :not selector, which means "no elements at all matching the condition".
Is there such a selector or trick ?
Any other suggestions / directions to try ?
Thanks
Is it possible to insert -- dynamically generated -- content with CSS into the same website a second time, let's say a div-container like this: <div id="duplicate-me">dynamically generated content</div>
CSS is used to style content that exists or will eventually exist on a page. It can't load or insert dynamic content to a page. It can control showing/hiding content on a page, but the content needs to be placed there first (with the exception of psuedo-classes, but that's not really "dynamic"). As others have mentioned, Javascript/jQuery is what you are needing to use to achieve what you are wanting.
Using pseudo element's in CSS we can kind of create an element and style it in CSS. But then this has it's own limitations.
Javascript is what will essentially help you achieve this using document.createElement() method and other methods line appendChild() etc
CSS cannot be used for duplicating, but you can use javascript to duplicate div,p or any other element. We do it like
In the html file
<head>
<!--all other stuff-->
<script src='sketch.js'></script>
</head>
in the sketch.js file
var dupElem = document.createElement('div');
dupElem.id = "duplicate-me";
document.body.appendChild(dupElem);
//to manipulate the text content we do
dupElem.textContent = "some lorem ipsum"
//or else you can do a for loop
for (let i = 0;i < 3;i++){
document.body.appendChild(dupElem);
}
It is possible to make a copy of a node element but you need Javascript to do that.
<div class="duplicate-me">dynamically generated content</div>
In your Javascript:
let nodeToClone = document.getElementsByClassName("duplicate-me")[0];
let newClone = nodeToClone.cloneNode(true);
document.body.appendChild(newClone);
Please note that id needs to be unique in the document. That is why I used class.
Here you can learn more about clone.
O.K., JavaScript then. I'll look into it. Thank you for the answers. :-)
I have a HTML like this in my QWebView
<div class='a' id='root'>
<div id='x'>...</div>
<p> ...
<p>
...
<div id='x2'>...</div>
<div>
<a href='go/xxxx'>go</a>
</div>
</div>
How do I select the a? I tried this selectores:
div[id='root'].a
div[id='root'] + a
but it didn't worked. Code:
QWebFrame* frame = webView->page()->mainFrame();
QWebElement button = frame->documentElement().findFirst("div[id='root'].a");
assert(!button.isNull()); // gets executed
Your selector is selecting the div with id='root' and class='a'. If you want to select the a tag inside of that div, you need to make your selector:
div[id='root'].a a
The additional 'a' at the end of the selector tells jquery to select the a inside of the div.
You can switch to using XPath 2.0 in Qt to have more expressive freedom, but then you need to process your HTML as XML.
To resolve, add a descendant selector1 for a. I.e., change this div[id='root'].a into this:
div[id=root].a a
As an alternative, if there's a bug in Qt, try:
div[id=root][class=a] a
Or (which is potentially a bit wider):
div[id~=root][class~=a] a
These last two are just alternatives in case for some reason the original fix to your code (adding the a descendant selector) didn't work.
The code snippets above doesn't use quoted strings, this is optional.
1 adding a was seen in stevenc4's answer), after my original (wrong) solution. Kudos to him :)
I was wondering if you could assign data attributes to divs, because I am adding a fb-like-box to my html and want to customize the fb box in less, as much as possible.
It uses data-height, data-width, data-header, among others to customize the fb-like-box
<div class="fb-like-box" data-href="https://www.facebook.com/FacebookDevelopers" data-height="300px" data-width="240px" data-show-faces="false" data-header="false" data-stream="true" data-show-border="false"></div>
Is there a way to do something like this in less?
.fb-like-box {
.data-height(300px);
.data-width(240px);
.data-stream(true);
}
So the html could look like:
<div class="fb-like-box" data-href="https://www.facebook.com/FacebookDevelopers"></div>
I know I could do this using js, but was wondering if it can be done using less first.
I have a <p>Example string</p> With some text inside. I want to use css to search for a word within that paragraph.
I know this is possible if you have e.g. All you have to do then is:
a[href*="test"]{}
But when I try to do this with my paragraph I can't seem to get it to work. I've tried:
[p*="string"]{}
p[*="string"]{}
The short answer is NO, this is not possible using CSS only, what you are using is element[attr=val] selector which only selects elements with that particular attribute with that specific values. You need to use jQuery or Javascript with a regex to track the pattern and apply styles to its elements.
On the other hand you can create custom attributes with a prefix of data- so for example you can do something like
<p data-custom="Holder Text">Want to change this</p>
<p data-custom="Holder Text">Want to change this</p>
<p data-custom="Holder Text 2">Dont Touch This</p>
p[data-custom="Holder Text"] {
color: red;
}
Demo
But again, this won't make sense here, you can simply assign the classes if you are aware what elements need to be changed.
You cannot this using CSS only, however you can check this blog post about how to achieve this using jQuery.
Basically you should use :contains selector:
$("p:contains('John')")