Macro console_dbg 

macro_rules! console_dbg {
    () => { ... };
    ($val:expr $(,)?) => { ... };
    ($($val:expr),+ $(,)?) => { ... };
}

A macro similar to dbg! to log to browser console.

See the stdlib documentation to learn more. This macro calls console.log instead of eprintln!. This macro passing the values to console after formatting them using the Debug implementation.