CSS selector when :target empty

Question

I need a css3 selector to target an element when the :target equals the id of the element (easy) or when the :target is empty (impossible?). It

Answer 1

All I can think of is that you have some javascript that checks to see if the hash is empty. If so, it adds a class to the body tag called "noHash". Then, you can use the fact that there is the noHash class available in your CSS rules.

if (window.location.hash.length <= 1) {
     document.body.className += " noHash";
}

Then, your CSS could be like this:

div {
  background: blue;
}
div:target, body.noHash div {
  background: red;
}

If there's any circumstance where a user might add a hash value after the fact, then you may have to watch for that to make sure the noHash class gets removed appropriately.

Note: you don't have to add the class name to the body tag. You can add it to any parent object that covers all the objects you wish to affect.