how to wait in javascript

//code before the pause
setTimeout(function(){
    //do what you need here
}, 2000);function pause(ms) {
  return new Promise(resolve => setTimeout(resolve, ms));
}

//Pause for 1000 milliseconds

pause(1000) wait(ms) {
        return new Promise(resolve => setTimeout(resolve, ms));
 }function sleep(ms) {
  return new Promise(resolve => setTimeout(resolve, ms));
}timeout(ms) { //pass a time in milliseconds to this function
    return new Promise(resolve => setTimeout(resolve, ms));
  }function sleep(ms) {
  return new Promise(resolve => setTimeout(resolve, ms));
}

console.log("Hello");
sleep(2000).then(() => { console.log("World!"); });