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我在做一個簡單的測驗應用程序。但我堅持訂購這些功能。製作測驗應用程序,卡在功能上
下面是代碼
// questions set
var qtnsSet = [
// format: [question, [comma, separated, options], index of correct ans. eg. 1]
["What is the full form of IP?", ["Internet Provider", "Internet Port", "Internet Protocol"], 2],
["Who is the founder of Microsoft?", ["Bill Gates", "Steve Jobs", "Steve Wozniak"], 0],
["Full name of IBM?", ["Internet Business Machine", "International Business Machine", "Indian Business Machine"], 1]
]
// init vars
var qtnNo = 0,
score = 0;
// define elements
var qtnContainer = $("qtn-container"),
optnsContainer = $("optns-container"),
submitBtn = $("submit-btn");
function $(id) { // Shortcut for document.getElementById
return document.getElementById(id);
}
function askQtn() { // ask question
var optns = qtnsSet[qtnNo][1], // options array
optnsHtml = "";
for (var optnNo = 0; optnNo < optns.length; optnNo++) {
optnsHtml += createOptnHtml(optnNo, optns[optnNo]);
}
qtnContainer.textContent = qtnsSet[qtnNo][0]; // question
optnsContainer.innerHTML = optnsHtml; // options
}
function createOptnHtml(optnNo, optn) { // create html elements for options
// eg. <li><input type='radio' name='optn' value='Option' id='optn-0'>
// <label for='optn-0'>Option</label></li>
return "<li><h3><input type='radio' name='optn' value='" + optn + "' id='optn-" + optnNo + "'>" +
" <label for='optn-" + optnNo + "'>" + optn + "</label></h3></li>";
}
function getGivenAns() { // get the answer given by user
var optns = document.getElementsByName("optn");
for (var optnNo = 0; optnNo < optns.length; optnNo++) {
if (optns[optnNo].checked) {
return optnNo; // index of the chosen answer
}
}
}
function checkAns() { // check if user's right or not
if (getGivenAns() == qtnsSet[qtnNo][2]) {
score += 6; // 6 points for right answer
}
}
function submitAns() {
if (qtnNo <= qtnsSet.length) {
if (getGivenAns()) {
checkAns();
qtnNo++;
askQtn();
} else {
alert("Please choose an answer.");
};
} else {
alert("Score: " + score);
};
}
window.addEventListener("load", askQtn, false);
submitBtn.addEventListener("click", submitAns, false);
我無法配置submitAns()
功能,使每一件事情正常工作。 如何訂購submitAns()
內的功能?
@suspectus感謝編輯。我沒有注意到這個錯字。 – user3208070
沒有probs - 它讓我覺得可以做到這一點的功能。 – suspectus