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# jQuery UI API - .focus() ## Category (#) | (#) | (#) ## Usage **Description:** Asynchronously focuses an element. **Returns:** (http://api.jquery.com/Types/#jQuery) .focus( delay [, callback ] )Returns: jQuery | Parameter | Type | Description | | --- | --- | --- | | delay | Integer | The number of milliseconds to wait before focusing. | | callback | Function() | The function to call after the element is focused. | This plugin extends jQuery's built-in [.focus()](#) method. If jQuery UI is not loaded, calling the `.focus()` method will not fail directly because the method exists in jQuery. However, the expected behavior will not occur.