/// Sets focus on the specified element, if it can be focused.
///
/// [(JavaScript docs)](https://developer.mozilla.org/en-US/docs/Web/API/HTMLElement/focus)
Sets focus on the specified element, if it can be focused.
Sets focus on the specified element if it can be focused .
fn focus( &self ) {
        js! { @(no_return)
            @{self.as_ref()}.focus();
        }
    }
fn focus ( & self ) { js ! { ( no_return ) { self as_ref ( ) } focus ( ) } }
Sets focus on the specified element, if it can be focused.
Sets focus on the specified element if it can be focused .
&self