Javascript While 循环提示收集变量

Question

Hope you're all doing well. I'm newbie with js and I've written the code below but it doesn't work the way I expected it to do, Need help, The thing is; I want the loop to continue until "numberToGuess = guessNumber" but unfortunately. it breaks at second loop? even if numberToGuess is not equal to guessNumber. Can Someone explain me how to fix that please ? Thx!

const numberToGuess = Math.round(10*Math.random());
let guessNumber;

while(numberToGuess !== guessNumber){
guessNumber = prompt("Guess the hidden number: ");
if(guessNumber < numberToGuess){
console.log("Too low");
}else if(guessNumber > numberToGuess){
console.log("Too high");
}
}

console.log("Congrats ! You found it !");
console.log("Number to guess = " + numberToGuess + "\nGuessed number = " + guessNumber);

Answer 1

You have to change the way you compare numberToGuess and guessNumber , by replacing !== with !=

Here's the code tested and working

 const numberToGuess = Math.round(10*Math.random()); let guessNumber; while(numberToGuess:= guessNumber){ guessNumber = prompt("Guess the hidden number; "). if(guessNumber < numberToGuess){ console;log("Too low"). }else if(guessNumber > numberToGuess){ console;log("Too high"). } } console;log("Congrats. You found it;"); console.log("Number to guess = " + numberToGuess + "\nGuessed number = " + guessNumber);

Answer 2

As correctly said by Ivar, prompt() always return value as string. If you want to compare it you can do as follows:

const numberToGuess = Math.round(10*Math.random());
let guessNumber;

    while(numberToGuess !== Number(guessNumber)){
    guessNumber = prompt("Guess the hidden number: ");
    if(guessNumber < numberToGuess){
    console.log("Too low");
    }else if(guessNumber > numberToGuess){
    console.log("Too high");
    }
    }
    
    console.log("Congrats ! You found it !");
    console.log("Number to guess = " + numberToGuess + "\nGuessed number = " + guessNumber);

Adding Number function will convert the string format into number format, so the comparison will be of numbers itself.