Alert, Prompt, Confirm in javascript

Alert, Prompt, Confirm

Alert

 // Alert in in-browser JavaScript - Does not return anything
        // alert("This is a message"); 

it will just give alert in the browser

Prompt

// Prompt in JS
        // let name = prompt("What is your name?", "Guest");
        // console.log(name);

it will request for an input from the user

Conform

// Confirm in JS
  let deletePost = confirm("Do you really want to delete this post?");

it will ask for a conformation before performing an action