我怎么猜JavaScript中的数字游戏不起作用？

Question

Whenever I enter a number it says the number is too low even if the number is way greater than the other number. When I enter zero or don't enter anything at all it says your number was too low. I don't get it i have looked over my code a bunch of times, but I still haven't found any problems.

Here is my code:

var answer = prompt("Guess a number between 1 and 100");
var number = confirm(Math.round(Math.random()*100));

if (number === answer) {
    confirm("You win!");
} else if(number < answer){
    confirm("Your number was too low!");
} else if (number > answer) {
    confirm("Your number was too high!");
}   

Answer 1

首先尝试使用parseInt()函数将answer转换为整数值。

var answer = parseInt(prompt("..."));

Answer 2

The confirm function returns a boolean ( true or false ), so the number variable in the line below actually hold a boolean value.

var number = confirm(Math.round(Math.random()*100));

And that messed up your logic.

Simply change it to:

var number = Math.round(Math.random()*100);
confirm(number);

---

Another notice

prompt("Guess a number between 1 and 100"); returns a string, so to be 100% clear, you should cast the value to number:

var answer = Number(prompt("Guess a number between 1 and 100"));

Answer 3

 var answer = prompt("Guess a number between 1 and 100"); var ai_nswer = Math.round(Math.random() * 100); var number = confirm(ai_nswer); if (ai_nswer == answer) { confirm("You win!"); } else if(ai_nswer > answer){ confirm("Your number was too low!"); } else if (ai_nswer < answer) { confirm("Your number was too high!"); } 

Apart from confirm method you are using was not proper, the logic was also problematic. Your if conditions were wrong for high/low. You should store the value of your random answer in a temp value, and then confirm it, since confirm returns a boolean value, not the input value.

Answer 4

the variables answer and number is not have the same kind, for convert use parseInt in the var answer , see my answer:

 var answer = prompt("Guess a number between 1 and 100"); var number = confirm(Math.round(Math.random()*100)); answer=parseInt(answer); if (number === answer) { confirm("You win!"); } else if(number < answer){ confirm("Your number was too low!"); } else if (number > answer) { confirm("Your number was too high!"); }