我的程序正在响应，表现出意外的行为。
selectQuestion() 的预期行为：
随机选择一个问题类别并检查所需的难度级别。搜索问题列表，将任何符合条件但最近未播放的问题添加到潜在问题列表中。如果没有符合此随机选择标准的问题，则重复上述步骤，直到找到问题。
selectQuestion() 的实际行为：
selectQuestion()将选择 中的问题recentQuestions[]，而不是随机选择新类别。
附加信息：
dda[]是一个对象数组，每个对象都有 acategory和 a difficulty。
question[]是一个对象数组，每个对象都有一个question, answers[], correctAnswer,category和difficulty.
recentQuestions[]是一个整数数组。（每个整数是一个问题的索引question[]）
function selectQuestion()
{
//Create an array we can use to store the numbers of any questions which meet our criteria
var potentialQuestions = new Array();
// While there are no questions which meet our criteria, pick new critieria
// (This prevents the program from getting 'stuck' if criteria can't be met)
while(potentialQuestions.length == 0) {
// Select a category at random, retrieve the difficulty we're looking for
var randomSelection = Math.floor(Math.random()*dda.length);
var category = dda[randomSelection].category;
var difficulty = Math.floor(dda[randomSelection].difficulty+0.5);
// For each question we have (in question[])
for(q = 0; q < question.length; q++) {
// If the category and the difficulty meet our criteria
if(question[q].category == category & question[q].difficulty == difficulty) {
// Check if the question has been played recently
// by looping through recentQuestions[]
var playedRecently = false;
for(r = recentQuestions.length; r=0; r++) {
if(recentQuestions[r] == q) {
playedRecently = true;
}
}
// If the question has not been played recently
if(!playedRecently) {
// Add it to potentialQuestions[]
potentialQuestions.push(q);
}
}
}
}
// Select a question at random from our potential questions
var selectedQuestion = potentialQuestions[Math.floor(Math.random()*potentialQuestions.length)];
// If 5 recent questions have been stored, remove the oldest
if (recentQuestions.length == 5) {
recentQuestions.shift();
}
// Add the selected level to recentQuestions[]
recentQuestions.push(selectedQuestion);
return selectedQuestion;
}
我不确定这种行为来自哪里。任何想法都将受到欢迎！谢谢！
解决了！
for (r= recentQuestions.length; r=0; r++)事实上应该是for (r=0; r<recentQuestions; r++)- 绝对是那些日子之一！呸！谢谢大家:)