Javascript: promise

 console.log("promise means prose of code eecution ");

let prom1 = new Promise((resolve, reject) => {

  setTimeout(() => {

    a = 0.3;

    if (a < 0.9) {

      console.log("not resolving promise");

      alert("not resolving promise");

      resolve("Pulkit not resolved");

    } else {

      console.log("resolving promise");

      alert("resolving promise");

      resolve("Pulkit");

    }

  }, 4000);

});

prom1

  .then((a) => {

    console.log(a);

  })

  .catch((err) => {

    console.log(err);

  });