如何在 Javascript 中创建数学上正确且可接受的除法

Question

对于 exp，该代码并不总是创建数学上正确的除法。它创建诸如 2/0 等的除法，并且也不接受“1/3”四舍五入的答案，如“0.33”或“0.33333”。我需要在代码中更改什么？感谢您的帮助和时间。document.getElementById("button1").addEventListener("click", question);var mulDiv = document.getElementById("mulDiv");function question(){var startButton = document.getElementById("button1");var number1 = document.getElementById("number1");var number2 = document.getElementById("number2");var decider = Math.random();    button1.textContent = "New Question";number1.textContent = Math.floor(Math.random()*5);number2.textContent = Math.floor(Math.random()*5);    mulDiv.textContent = "/"  };document.getElementById("button2").addEventListener("click", answer);function answer(){var num1 = parseInt(document.getElementById("number1").textContent, 10);var num2 = parseInt(document.getElementById("number2").textContent, 10);var answer = parseInt(document.getElementById("userAnswer").value, 10);var feedBack = document.getElementById("feedBack");         if (mulDiv.textContent == "/"){if(answer == num1 / num2) {feedBack.textContent = "right";} else {feedBack.textContent = "wrong";}}        };<button id = "button1">Start</button><p><label id = "number1"> </label><label id = "mulDiv"> </label><label id = "number2"> </label> = <input id = "userAnswer" type=text><button id = "button2">Answer</button></p><p id = "feedBack"> </p>

Answer 1

这行代码：

number2.textContent = Math.floor(Math.random()*5);

生成 0 到 4 之间的随机数，因为Math.random()返回 0 到 1 之间的数字（不包括 1）。你应该做：

number2.textContent = 1 + Math.floor(Math.random()*4);

这样最小值将为 1，最大值将为 5。