var | let | const
1234567891011121314151617181920212223242526
//js seletech
var x = 3;
//var can be re-assigned or re-declared
var x = 4;
x=5;
let a = 10;
a = 20;
//let can be reassinged but not re-declared.
const PI = 22/7;
//can't reasssing or re-declare
/*
don't use var
use let or const
use const morethan let"+
use let when you need to reassign */
JavaScript
INFO