JavaScript String slice() Method

Program 1

// "use strict"
// const ps=require("prompt-sync")
// const prompt=ps({sigint:true})
// let s1=prompt("Enter a string")
let s1="data flair free java script course"
let s2=s1.slice(5,10)
  console.log(s2)
//let s2=s1.substring(5,10)
// console.log("5-10: "+s2)
// let s3=s1.substr(5,10) 
// console.log("from 5  to  next 10 char: "+s3)

// substring()
//substr()