how do I select a div with class "A" but NOT with class "B"?
I have some divs:
<div class="A">"Target"</div>
<div class="A B">"NotMyTarget"</div>
<div class="A C">"NotMyTarget"</div>
<div class="A D">"NotMyTarget"</div>
<div class="A E">"NotMyTarget"</div>
Is there a CSS selector that will get me the div containing Target but not the divs containing NotMyTarget?
Solution must work on IE7, IE8, Safari, Chrome, and Firefox
Edit: So far Nick is the closest. It's clumsy and I don't like the solution, but at least it works:
.A
{
/* style that all divs will take */
}
div.B
{
/* style that will override style .A */
}
Answer
You can use the attribute selector to match the div that has only one class:
div[class=A] {
background: 1px solid #0f0;
}
If you want to select another div that has multiple classes, use quotes:
div[class="A C"] {
background: 1px solid #00f;
}
Some browsers do not support the attribute selector syntax. As usual, "some browsers" is a euphemism for IE 6 and older.
See also: http://www.quirksmode.org/css/selector_attribute.html
Full example:
<!DOCTYPE html>
<html>
<head>
<style>
.A { font-size:22px; }
.B { font-weight: bold; border: 1px solid blue; }
.C { color: green; }
div[class="A"] {
border: 1px solid red;
}
div[class="A B"] {
border: 3px solid green;
}
</style>
</head>
<body>
<div class="A">"Target"</div>
<div class="A B">"NotMyTarget"</div>
<div class="A C">"NotMyTarget"</div>
<div class="A D">"NotMyTarget"</div>
<div class="A E">"NotMyTarget"</div>
</body>
</html>
EDIT 2014-02-21: Four years later, :not is now widely available, though verbose in this specific case:
.A:not(.B):not(.C):not(.D):not(.E) {
border: 1px solid red;
}
Unfortunately, this doesn't work in IE 7–8 as specified in the question: http://caniuse.com/#search=:not