Functions
=========

console.log(a) ==> Undefined

var a = 100;

console.log(a); ==> 100

Function Hoisting:
==================
==> we can call the function before the definition is called as "Function Hoisting".

searchHnadler("Searching for 'JavaScript Function Hoisting'..."); // function call

// function definition

function searchHnadler(message){
    console.log(message);
}

// searchHnadler("Searching for 'JavaScript Function Hoisting'..."); // function call

==================================================
Self-Invoking Functions:
========================
->The function can call itself for only one time to make execute the task.
Syntax:
	(function nameOftheFunction(){
		// logic;
	})();

(function greets(name){
    console.log("Welcome to Ashok IT ",name);
})("Ravi");

// greets();

================================================
(function countdownTimer(){
    const offerEndTime = new Date().getTime() + 60 * 60 * 1000;
    
    function updateTimer(){
        const currentTime = new Date().getTime();
        const timeRemaining = offerEndTime - currentTime;
        
        if(timeRemaining > 0){
            const minutes = Math.floor((timeRemaining % (1000 * 60 * 60))/(1000 * 60));
            const seconds = Math.floor((timeRemaining % (1000 * 60))/1000);
            console.log(`Offer ends in: ${minutes}m ${seconds}s`);
        }
        else{
            console.log("The offer has ended.");
            clearInterval(timeInterval);
        }
    }
    const timeInterval = setInterval(updateTimer,1000);
})();