/// Adds token to the underlying string.
///
/// [(JavaScript docs)](https://developer.mozilla.org/en-US/docs/Web/API/DOMTokenList/add)
Adds token to the underlying string.
Adds token to the underlying string .
pub fn add( &self, token: &str ) {
        js! { @(no_return)
            @{self}.add( @{token} );
        }
    }
pub fn add ( & self , token : & str ) { js ! { ( no_return ) { self } add ( { token } ) } }
Adds token to the underlying string.
Adds token to the underlying string .
&self
token
&str