Alert Prompt Confirm

Alert
- Opens a mini window with message
Prompt
- takes input as a string
- second arg is a default value which will be aleray present in the text field
- let a = prompt("Enter value of a ",900);
Confirm
- Asks to confirm and sets true or false
We should not use these in UI , use modals Instead
- extact location and look these are differnet in different browsers
- These are old methods
- Blocks the main execution thread , program doesnot continue to next line of code

  console.log("hello");
  alert("your script works");
  let a = prompt("Enter value of a ","900");
  a = Number.parseInt(a)
  let write = confirm("Do you want to write it to the page")
  if (write) {
      document.write(a)

  } else {
      document.write("please allow me to write")
  }
  alert("you enter datatype of " + (typeof (a)))