Arrays In Javascript

 let prompt = require("prompt-sync")();

let alert = require("prompt-sync")({ sigint: true });

let marks_sem = [71,52,63,44,75]

console.log(marks_sem[0])

console.log(marks_sem[1])

console.log(marks_sem[2])

console.log(marks_sem[3])

console.log(marks_sem[4])

console.log("The lenghth of marks_sem is", marks_sem.length)

type of data = object