The difference requestAnimationFrame and seeTimeout

With requestAnimationFrame refresh your browser and executed.

let a =  () =>{ 

        doSomething() ;

        window.requestAnimationFrame(  function  );

        }

        window.requestAnimationFrame(  function  );

        

        

seeTimeout cross refresh every time a certain time to perform with the browser's blind spots.

let a = () => {

        doSomething();

        window.setTimeout( function, yourIntervalTime );

        }

        window.setTimeout(  function, yourIntervalTime  )