day1.txt

# Variable declaration
    var myVariable = 'this is a variable';
    let myVariable = 15;
    const myVariable = {
        name: 'pat',
        langage: 'js'
    };

var or let on const

let and const are introduice in ES6 or emascript 2015, var is use since javascript was create

-> `const` is a signal that the identifier won't be reassignate.

-> `let` is a signal that the indentifier can be reassignate, sush as a cunter in a loop, or a value  swap 
in an algorithm. it also signal that the variable wil only be use in the block it defined in, witch is not always the
entier containing function.

-> `var` is less use than `const` and `let` in new javascript version, is a signal that the identifier may or may
not be reassignate, and the variable may or may not use for an entier function.

# variable scopes in javascript

# `==` and `===`
    `==` abstract equality operator...  the operand of abstract equality are convert in the common type before the comparison,
    `===` strict comparison