Timer.html

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Timers JS</title>
</head>
<body>
    <script>
        //Timeout
         (function() {
              function holaMundo() {
                   console.log("Hola Mundo");
              }
                        //Funcion , delay(ms)
              setTimeout(holaMundo, 3000);


         }())

         //Interval
         (function() {
              var contador = 0;
              
              function holaMundo() {
                   contador++;
                   console.log(contador);

                   if(contador == 10){
                        clearInterval(repeticion);
                   }
              }
                                        //Funcion , time-frecuence(ms)
             var repeticion = setInterval(holaMundo, 1000);


         }())


    </script>
    
</body>
</html>