pub fn len(&self) -> u32 {
        js!(
            return @{self}.length;
        ).try_into().unwrap()
    }
/// Returns the current number of history entries.
///
/// [(JavaScript docs)](https://developer.mozilla.org/en-US/docs/Web/API/History)
// https://html.spec.whatwg.org/#the-history-interface:dom-history-length
Returns the current number of history entries.
Returns the current number of history entries .
pub fn len(&self) -> u32 {
        js!(
            return @{self}.length;
        ).try_into().unwrap()
    }
pub fn len ( & self ) -> u32 { js ! ( return { self } length ) . try_into ( ) . unwrap ( ) }
Returns the current number of history entries.
Returns the current number of history entries .
&self
&self