# .focusin()

## focusin ( handler(eventObject) ) Returns: jQuery version added: 1.4

- handler(eventObject)
  Type: Function
  A function to execute each time the event is triggered.

## focusin ( eventData, handler(eventObject) ) Returns: jQuery version added: 1.4.3

- eventData
  Type: Object
  An object containing data that will be passed to the event handler.

- handler(eventObject)
  Type: Function
  A function to execute each time the event is triggered.

Description: Bind an event handler to the "focusin" event.

This method is a shortcut for `.on('focusin', handler)`.

The `focusin` event is sent to an element when it, or any element inside of it, gains focus. This is distinct from the focus event in that it supports detecting the focus event on parent elements (in other words, it supports event bubbling).

This event will likely be used together with the focusout event.

## Examples:

#### Example: Watch for a focus to occur within the paragraphs on the page.

    <!doctype html>
    <html lang="en">
    <head>
      <meta charset="utf-8">
      <title>css demo</title>

      <style>

      span {
        display: none;
      }

      </style>

      <script src="//code.jquery.com/jquery-1.10.2.js"></script>
    </head>
    <body>

    <p><input type="text"> <span>focusin fire</span></p>
    <p><input type="password"> <span>focusin fire</span></p>

    <script>

    $( "p" ).focusin(function() {
      $( this ).find( "span" ).css( "display", "inline" ).fadeOut( 1000 );
    });

    </script>

    </body>
    </html>

#### Demo: