Guess the number game

This program is the guessing game. It will input a number between

1 and 100 then it will tell the user if the number the input is too low

or too high.

*/

//holds the high score

var highScore = 0;

//control for the while loop

var notDone = true;

//hold how many attemps to get guess number

var tries = 0;

//will grab random number

var random = getRandom();

//will run until user no longer wants to play

while(notDone){

tries++;

var num = Number(prompt("Enter a number between 1 and 100: ", ""));

num = checkValidNum(num);

var result = HighOrLow(num);

//tell user higher/lower/correct

alert(result);

if(result === "Correct!"){

//tells user the correct answer once correct

alert("The correct number was: " + random);

var score = highScoreFun(tries);

//if its a highscore tell user

if(score == true){

alert("Highscore!!! It took you " + tries + " attempt(s).");

}

//tell user their ammount of attempts.

else{

alert("Amount of attempts is " + tries + ". " + (tries - highScore) + " attempt(s) more than the highscore.");

}

notDone = confirm("Do you want to try again?");

//will reset tries and a new random number if user wants to play again.

if(notDone){

tries = 0;

random = getRandom();

}

}

}

//will tell whether or not it's a high score

function highScoreFun(score){

//if no attempts or attemps is lower then highscore it's a highscore.

if(highScore == 0 || tries < highScore){

highScore = tries;

return true;

}

return false;

}

//checks if its a number between 1 and 100

function checkValidNum(number){

while(isNaN(number) || number < 2 || number >99){

number = Number(prompt("Input is not a number between 1 and 100, please try again: ",""));

}

//will return value once user enters a valid input

return number;

}

//will return whether the input is higher or lower or correct

function HighOrLow(number){

//returns correct if user is right

if(number == random){

return "Correct!";

}

//returns higher if user guessed low

else if(number < random){

return "Higher";

}

//returns lower if user guessed high

else if(number > random){

return "Lower";

}

}

//returns a random integer between 1 and 100

function getRandom(){

return parseInt(Math.random() * (100-2) + 2);

}