下面是我的代码及其附带的说明。目前，错误答案的响应文本显示在页面加载时，我无法将其更改为正确答案。
// Declare a string variable called question and set it equal to a True/False question of your choice.
var question = "KD has sold his legacy at OKC for a championship ring at GS.";
// Declare a boolean variable called answer and set it equal to true or false (the answer to the question you asked above.)
var answer = true;
// Create a function called loadQuestion() that sets the value of the questionText element equal to the question variable you declared above.
function loadQuestion(){
document.getElementById("questionText").innerHTML = question;
}
// Create a function called checkAnswer(userAnswer) that takes one incoming parameter.
function checkAnswer(userAnswer){
if(userAnswer===answer){
document.getElementById("responseText").innerHTML = "That is correct!";
document.getElementById("responseText").className = "correctAnswer";
}
else if(userAnswer!==answer){
document.getElementById("responseText").innerHTML = "I'm sorry, that is
not correct.";
document.getElementById("responseText").className = "incorrectAnswer";
}
}
// ---> If your answer variable matches the incoming userAnswer parameter, write a success message in the element called responseText.
// ---> If your answer variable does NOT match the userAnswer parameter, write a failure message in the element called responseText.
// Create TRADITIONAL DOM EVENT HANDLERS for the "onclick" events for the three buttons.
var start = document.getElementById("startButton");
var truth = document.getElementById("trueButton");
var falsify = document.getElementById("falseButton");
// The Start button should trigger the loadQuestion method
start.onclick = loadQuestion;
// The True button should trigger the checkAnswer method with a value of "true"
truth.onclick = checkAnswer("true");
// The False button should trigger the checkAnswer method with a value of "false"
falsify.onclick = checkAnswer("false");
最佳答案
如果您要比较三重相等===，请确保两侧的类型相同
关于javascript - 简单的 javascript JS 事件处理程序无法正常工作，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/38250121/