How to find which DOM element has the focus using jQuery?

The HTML DOM has an activeElement Property. It can be used to get the currently focused element in the document:

Syntax: var ele = document.activeElement;

Return value: It returns the currently focused element in the document.
Example Code Snippets:

Example 1: var eleName = document.activeElement.tagName;
Returns: The Tag Name of the active element.

Example 2: var eleId = document.activeElement.id;
Returns: The id of the active element, if any.

Sample Code to demonstrate working:

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<!DOCTYPE html>
<html>
  <head>
    <script src=
    </script>
  </head>
  <body>
  
    <p> Click wherever you like. 
The active/focused DOM name will be displayed at the end</p>
    <input type="text" value="Some input field">
    <button>Simple Button</button>
  
    <p id="fun"></p>
  
    <script>
      $("body").click(function() {
        var x = document.activeElement.tagName;
        document.getElementById("fun").innerHTML = x;
});
    </script>
  
  </body>
</html>

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Explanation of the above code:
The script inside body tag modifies the HTML Content of the DOM Element having id fun to the name of the DOM Element which is currently active or is in focus. This is the value which is returned by the

document.activeElement.tagName

Output:

  1. Before clicked/focused:
  2. After clicked/focused:
  3. When input field is clicked/focused

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