:focus Selector

Selects element if it is currently focused.


As with other pseudo-class selectors (those that begin with a ":"), it is recommended to precede :focus with a tag name or some other selector; otherwise, the universal selector ( "*" ) is implied. In other words, the bare $( ":focus" ) is equivalent to $( "*:focus" ). If you are looking for the currently focused element, $( document.activeElement ) will retrieve it without having to search the whole DOM tree.

Adds the focused class to whatever element has focus

<div id="content">
  <input tabindex="1" />
  <input tabindex="2" />
  <select tabindex="3">
    <option>select menu</option>
  <div tabindex="4">a div</div>
.focused {
  background: #abcdef;
$("#content").delegate("*", "focus blur", function () {
  var elem = $(this);
  setTimeout(function () {
    elem.toggleClass("focused", elem.is(":focus"));
  }, 0);

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