Okay, so this is more of a question that has lots of solutions that are not CSS, but I'm looking for doing this more from a theoretical perspective. I have an application for it, but its not worth coding it out in any other way.
The (Fun) Question
How do you color the text of an element using the text of the element? I have an element, all on it's own, which will contain a hex value for a color, and I want the text to be that color, but I want to do it only using CSS (likely only can be done using CSS 3).
Sample HTML
<div class="color_contents">#0000FF</div>
So, I've tried to use the attr() with no success, but I'm not sure I'm using the right contents (I've tried text, textContent, and innerText to no avail). Doesn't need to be cross-browser, but just a way to accomplish it.
Currently, there is no way to use CSS to access an element's text content, not even with the CSS3 modules available today.
Regarding this:
So, I've tried to use the attr() with no success, but I'm not sure I'm using the right contents (I've tried text, textContent, and innerText to no avail). Doesn't need to be cross-browser, but just a way to accomplish it.
attr() only looks at element attributes (foo="bar"). Since text content isn't an attribute of an HTML element (despite being a member of the corresponding DOM object), you can't query for it using that function.
There isn't a similar function for accessing an element's text content.
You could do something like this. It's a bit hacky, but all CSS
div.color_0000FF:before{
color:#0000FF;
content: "#0000FF";
}
HTML
<div class="color_0000FF"></div>
Example: http://jsfiddle.net/s8vLy/
The content/attr CSS properties can only be used with :before and :after pseudo-elements.
CSS3 will support attr access from other properties, see https://developer.mozilla.org/en/CSS/attr.
However when/if CSS3 attr goes live, you will still not be able to acces the "contents" of a element from CSS, simply because thats not what CSS is designed for.
Bottom line, use javascript :)
Related
why ::marker pseudo-element not support all CSS properties like other pseudo-elements?
can anyone explain me in brief.
Found out today that ::marker pseudo-element not support all CSS properties like background, display, etc but "font-size", "color", and "content" properties are working like charm.
The CSS Lists specification explains:
NOTE: It is expected that future specifications will extend this list of properties and relax the restriction on which properties can take effect. However at the moment outside marker box layout is not fully defined, so to avoid future compatibility problems only these properties are allowed.
Because this selector selects marker of a list item. Like the buller for example. That means that it allows you only to customize the bullet, not the list itself. Thats why you cant apply properties like display, because you are effecting the marker itself. This can be helpful
I know that I can do add color, padding... by styling the input. Are there vendor pseudo elements to style the text itself like there are for placeholder? I want to like translateY the text in the input but not using vertical-align or affecting input's height.
I've searched before, and just now searched again, but I don't believe there are any vendor pseudo elements targeting the values of text inputs like there are for placeholder text.
Being able to apply CSS transform properties to text input values is, to the best of my knowledge, not currently possible with CSS only. There may be some way to achieve what you want with JS, but I haven't seen it done before.
This post delves into the issue, offers some creative workarounds, and may provide you with useful guidance: Is there a way to style part of an input field's value?
As for pseudo-elements :after/:before there are apparently two ways if I want to display image there:
using background-image:url(imgurl.png);
using content:url(imgurl.png);
Are both ways correct and valid? Why should I be using one way over another?
Apparently using the second method you cannot set the picture properties like size. But first method is generaly more taught on internet.
Ideas?
It depends on what your image is, just like the debate between using an <img> tag vs using background-image in your CSS.
If your image is part of your page's content, use content:url(imgurl.png);. Certainly if you want the images to be interactive or to to inform the user's experience while on your page, use content. If your image is just stylistic for your site's visual design, use background-image:url(imgurl.png);
Also, do note that you should use double colons: ::before and ::after. Only IE8 requires the single-colon versions.
Do the "::before" and "::after" pseudo elements not work on image elements?
Here's an example I put together...I'm just trying to get a yellow background behind the image here:
http://dabblet.com/gist/3861878
I saw this "answered" (but no other details) in another post, but can't seem to find anything about it elsewhere.
CSS 2.1 spec says:
Note. This specification does not fully define the interaction of
:before and :after with replaced elements (such as IMG in HTML). This
will be defined in more detail in a future specification.
http://www.w3.org/TR/CSS21/generate.html
So it it'd be wise to avoid using this. Behavior across the browsers is uncertain and can change in future.
Does anyone know the name of the CSS classes responsible for styling the dojo promptMessages (or invalidMessages) tooltip associated with ValidationTextBoxes.
Normally Firebug does a great job of revealing all the inner workings of CSS, but in this case the tooltip prompt disappears when I try to inspect it!
I am intending to play with such CSS properties as padding and width for the promptMessage tooltip.
Dijit Tooltip template reveals the structure:
<div class="dijitTooltip dijitTooltipLeft" id="dojoTooltip">
<div class="dijitTooltipContainer dijitTooltipContents" dojoAttachPoint="containerNode" waiRole='alert'></div>
<div class="dijitTooltipConnector"></div>
</div>
Actually, although my question remains for general purposes, in the specific case that interests me, it's probably as easy to include as part of the tooltip content the css markings that will do what I want:
dijit.form.ValidationTextBox({
promptMessage = "<div class='customizedWidth'>Blabla</div>"
},myNode);
That said, I would still be eager to learn the dijit class for that specific tooltip. It would become necessary in the case of wanting to change the look of that entire class...
I had a similar problem when trying to debug why the css for the ToolTip on the ValidationTextBox was showing up as a plain grey box instead of using the proper css. The normal way to view css and other information in Firebug does not work because the tooltip will disappear when you click on it. However, I found that using the standard Web Developer Toolbar you can go to the CSS menu item and select View Style Information (or just do cmd-shift-Y on your keyboard). This will turn the cursor into a crosshair. You can then move the crosshair over the tooltip and the entire css chain will display for the tooltip. This solved my particular styling problem by providing the hint that I needed to apply the proper theme class to the body tag. The system I am coding against does not allow me to directly alter or add to the body tag in the generated html. However I used dojo to add the class after load like this:
dojo.query("body").addClass("claro");
and everything (Dialogs and tooltips) work great now.