If you check the form at this link, you'll see that required fields have a class="required" in the CSS and a * in the markup.
http://drupal.org/user
Can the * which shows in the markup be added entirely with CSS for divs that have this class?
You can use the after pseudo class:
.required:after { content: "*"; }
or, because you explicitly asked for a div with that class:
div.required:after { content: "*"; }
Should work (for IE only since IE8)
You can apply any style to this, of course. You can even do things like this:
div.required:after:hover { /* Hello, I'm a geek. */ }
This can also be achieved with JavaScript. jQuery:
$(".required").append("*");
span:after { content:"*"; }
Demo: http://jsfiddle.net/W3gHU/
You can use the :after or before css pseudo element for this, more info, also abt which browsers support it here.
You could add an image of a star via CSS. This should work in all browsers.
.required
{
background-image:url(/path/to/your/images/dir/required-field.png);
background-position:top right;
background-repeat:no-repeat;
padding-right:10px;
}
Try this page:
<html>
<style>
.required:after {
color: red;
content: "*"
}
</style>
<body>
<div class="required">Name</div> <input type="text">
<div class="required">Email</div> <input type="text">
</body>
</html>
:after is understood by probably everything except for IE (hopefully IE9 will have support)
Update taking into account comment of Šime Vidas:
it was just example of using. Of course it would bring more sense if we make it this way:
.required:before {
color: red;
content: "*"
}
....
<div>Name <input type="text" class="required"> </div>
then we can even add unobtrusive javascript validation to that field (so this way brings good advantages). The problem is that this refactored page will be displayed as we want it only in Opera (I checked it on all last builds of browsers, except for FireFox 4, but I'm not sure FF will change the way they take that style into account).
:after and :before do not work for input and img elements; there is related discussion of why. $(".required").before("*") from jQuery however will work everywhere, but that's more about JavaScript then CSS (and was mentioned before by other people).
Related
I am learning CSS and I am having a bit of trouble recognizing properties and understanding some of the syntax. in the CSS below.
.tabs nav li.tab-current:before,
.tabs nav li.tab-current:after {
}
I understand that tabs is a class and the nav li with the class tab-current within the tabs class in html will be applied with the same CSS.
Example:
<div class="tabs">
<nav>
<ul>
<li class="tab-current">Hey</li>
<li>hello</li>
</ul>
</nav>
</div>
However I'm not quite sure what :before and :after represent. Could someone provide me with an example? Thank you
They set something after and before the element you are selecting. For example:
p:after {
content: 'hi! im after';
}
p:before {
content: 'hi! im before';
}
You will understand it better if you see this fiddle.
:before and :after create pseudo elements as 'children' for the element they are applied to. They are often used for certain stylings, or error messages.
Fiddle: http://jsfiddle.net/XjUM8/1/
div:before {
content: "Before";
background: red;
}
div:after {
content: "After";
background: blue;
color: white;
}
You can also set them up to show up on hover
Fiddle : http://jsfiddle.net/XjUM8/2/
div:hover:before {
content: "Before";
background: red;
}
div:hover:after {
content: "After";
background: blue;
color: white;
}
Also, take a look at MDN :
Before & After
:before and :after are CSS Selectors that allow you to add content before or after the element in question. An example is of adding an arrow after a link to show progress:
HTML
<div class="testAfter"><a>Arrow After this link</a></div>
<div class="testBefore"><a>Arrow Before this link</a></div>
CSS
.testAfter:after{
content:"\25B6"
}
.testBefore:before{
content:"\25C0"
}
Fiddle to show:
http://jsfiddle.net/yPkVL/1/
You can add all kinds of things; images, text, etc. You can style them and add different positionings. You can do all kinds of things. It's like adding an extra div before or after the div in question without having to change the HTML markup.
Reference:
Before
After
:after and :before are called pseudo-elements. They're used to inject some content to your DOM through the CSS.
For instance, say you want to add an icon after every link that targets external websites (we'll assume that these links href all begin with "http://"). This would be a real pain in the neck to try and append this manually. Using the CSS pseudo-element :after, you can simply do something like this :
a[href^="http://"]:after {
content:url('href.png');
}
and bam ! You're good to go.
:after and :before allow you to simply inject some text or image, but they can also be used in many creative ways.
Beware though, they can be applied to anything except "replaced elements" : this means that you won't be able to use those pseudo-elements on tags such as <input>, <textarea>, <object>, <img>, etc.
The W3School explains it pretty well, did you read that up and not understand something?
Essentially what it means is you're going to insert whatever is in the :before area before what content is already in there, and the :after after the content.
:before and :after are selectors, they're used to select what you want to style.
The example on w3schools is as follows:
<!DOCTYPE html>
<html>
<head>
<style>
p::before
{
content:"Read this -";
}
</style>
</head>
<body>
<p>My name is Donald</p>
<p>I live in Ducksburg</p>
<p><b>Note:</b> For ::before to work in IE8, a DOCTYPE must be declared.</p>
</body>
</html>
What this does is print out:
Read this - My name is Donald and Read this - I live in Duksburg
After will esentially do the same thing.
There are
I have a form that is display:none and when I am going to hover on a another link, then the form comes up. How can I put the cursor into the input field? Is there a way to do it in css?
If I make the form to display:inline-block directly, the cursor is in the input field.
My CSS:
.search-bar {
display: none;
}
#main-nav a:hover .search-bar {
display: inline-block;
}
My Form in the html file:
<input id="search_search" type="text" autofocus="autofocus" placeholder="Placeholder.Search.Main" name="search[search]"></input>
We can use HTML5 auto focus attribute
For Example:
<input type="text" name="name" id="search_search" placeholder="Placeholder.Search.Main" name="search[search]" />
We can use JQuery to do this using foxus()
Javascript:
$("#show").hover(function(){
$("#search_search").show();
$("#search_search").focus();
});
Doesn't work in Firefox but works in Safari
I think you might be looking for some client-side scripting (Javascript or javascript with JQuery).
If you don't want to accomplish this through client-side scripting, and only want to support html5, then you should take a look into the "autofocus" attribute of html5. See the top answer to this post.
I'm stuck on this even though it is very simple.
I'm have a custom css file. In this I have added this piece of code:
input[type=text] {
margin-top:5px;
width:370px;
}
I have one page where I want to override this but when I try to with the following, the width of the text input does not change.
input[type=text] {
width:100px !important;
}
Try <input type=text style="width:100px;" /> That seems to work for me when using bootstrap .
You should be using CSS classes here, not to mention its better practise to use percentages rather than finite pixel values.
In any case, avoid inline CSS because thats bad practice.
CSS:
#narrow_input {
width:100px;
}
html:
<input type=text class="narrow_input" />
That way when you decide to make the narrow input red as well, you can just add color:red; to the stylesheet.
I have an annoying IE6 layout bug
This screenshot shows the problem:
Problem: Text inputs i.e. <input type='text' /> are wrong size.
The text inputs are a bit wonky. They are supposed to be 248px wide (like the textarea) and on the same horizontal level as their labels. All other browsers appear to obey the following code but our friend IE6 doesn't
.simple_form input[type='text'],.simple_form input[type='email'],.simple_form textarea
{
width:240px;
border:1px solid #ccc;
padding:3px
}
I dunno what I'm doing wrong here and it's driving me nuts. The page in question is here. The inputs are significantly wider than 248px in IE6. Does IE6 have a problem understanding input[type='text'] when used in CSS?
Can post more code
IE6 doesn't support the attribute selector in CSS.
You will to select those elements using an IE6 compatible way, such as classes.
In addition to the previous answers, also remember to keep said css selector in a separate selector. So for example,
input[type="text"], input.text {
color: red;
}
This will be completely ignored by IE6. But...
input[type="text"] {
color: red;
}
input.text {
color: red;
}
should work.
IE6 does not support CSS attribute selectors. Try a selector like the following instead:
.simple_form input.text {
...
}
In addition, remember the differences in the box model for IE6.
Yes our red headed step child, in my experience does not resolve well with attributes. Instead do something like
.input {/*your styles*/}
Not only will it be browser adaptable but with a css reset you will find it browser persistent as well.
Is there some kind of "not" CSS selector?
For example when I write the following line in my CSS, all input fields inside an tag with class classname will have a red background.
.classname input {
background: red;
}
How do I select all input fields that are OUTSIDE of a tag with class classname?
With current browser CSS support, you can't.
Newer browsers now support it- see Sam's answer for more info.
(See other answers for the alternatives in CSS.)
If doing it in JavaScript/jQuery is acceptable, you can do:
$j(':not(.classname)>input').css({background:'red'});
Mozilla supports negation pseudo-class:
:not(.classname) input {background: red;}
See also: http://developer.mozilla.org/en/Mozilla_CSS_support_chart
Note that the negation pseudo class is in the Selectors Level 3 Recommendation and works in recent versions of Firefox, Chrome and Safari (at least). Sample code below.
<html>
<head>
<title>Negation pseudo class</title>
<style type="text/css">
div {
border: 1px solid green;
height: 10px;
}
div:not(#foo) {
border: 1px solid red;
}
</style>
</head>
<body>
<div id="foo"></div>
<div id="bar"></div>
<div id="foobar"></div>
</body>
</html>
Wouldn't you do that by setting the 'global' background to red, then using the classname to alter the others?
input { background: red; }
.classname input { background: white; }
I would do this
input { /* styles outside of .classname */ }
.classname input { /* styles inside of .classname, overriding above */ }
There is no way to select the parent of matched elements with CSS. You would have to use JavaScript to select them.
From your question I assume you have markup that looks more or less like this:
<form class="formclassname">
<div class="classname">
<input /> <!-- Your rule matches this -->
<input /> <!-- Your rule matches this -->
</div>
<input /> <!-- You want to select this? -->
<input /> <!-- You want to select this? -->
</form>
One option is to add a class to a higher element, say the <form>, and write a rule to style all of the inputs of the form. I.E:
.formclassname input {
/* Some properties here... */
}
Or
.formclassname > input {
/* Some properties here... */
}
If you want to select them based on the fact that they are not inside of an element with a specific class, you're out of luck without the use of JavaScript.
I think the closest you can get is to only affect direct descendants with a declaration
This code for example will only affect input fields directly under divs with class "maincontent"
div.maincontent > input {
// do something
}
Inputs are a bit annoying because, unlike most other html elements, there isn't necessarily a way of resetting all the css properties back to their default value.
If the styling is non-critical (ie a nice to have but doesn't affect functionality) I would use jQuery to get an array of all the inputs, check their parents, and then only carry out the styling on those outside that div. Something like:
$('input').each(function() {
if($(this).closest('.classname') == false)
{
// apply css styles
}
});
(By the way, I'm no jQuery expert, so there might be some errors in the above, but in principle something like this should work)