Question

所以我试图在javascript中制作一个猜谜游戏类型的东西。我想要它，以便我可以在不更改其他代码的情况下不断添加新的人和问题，它将正常工作。现在这就是我到目前为止所看到的，它似乎应该有效，但它的表现非常难以预测和奇怪。有人可以看看我的代码，看看我哪里出错了？

JSFiddle Demo

这里：

// ORDER: Name, Age, Gender, Glasses

var peopleremaining = [
["Evan",17,"male",false],
["Liam",10,"male",false],
["Logan",15,"female",false],
["Brynn",7,"female",false],
["Caz",37,"male",true]
];

var questions = [
["Is the person you're thinking of older than 16?",1,16],
["Is the person you're thinking of male?",2,"male"],
["Is the person you're thinking of older than 10?",1,10],
["Does the person you're thinking of wear eyeglasses?",3,true]
 ];

 var randomquestion;
 var randomquestionnumber;

 function newquestion() {
randomquestionnumber = [Math.floor((Math.random()*questions.length))];
randomquestion = questions[randomquestionnumber];
document.getElementById("mainheading").innerHTML = randomquestion[0];
 }

 function buttonpressed(option) {
var questionsubject = randomquestion[1];
var questionvalue = randomquestion[2];
var peopleremaininglength = peopleremaining.length;

if (option == "yes") {

if (questionsubject == 1) {
    for (var t=0;t<peopleremaininglength;t++) {
        if (peopleremaining[t][questionsubject] < questionvalue) {
            peopleremaining.splice(t, 1)
        }
    }
}

else {
    for (var t=0;t<peopleremaininglength;t++) {
        if (peopleremaining[t][questionsubject] != questionvalue) {
            peopleremaining.splice(t, 1)
        }
    }
}

}

else {

if (questionsubject == 1) {
    for (var t=0;t<peopleremaininglength;t++) {
        if (peopleremaining[t][questionsubject] >= questionvalue) {
            peopleremaining.splice(t, 1)
        }
    }
}

else {
    for (var t=0;t<peopleremaininglength;t++) {
        if (peopleremaining[t][questionsubject] == questionvalue) {
            peopleremaining.splice(t, 1)
        }
    }
}   

}

questions.splice(randomquestionnumber, 1);

if (peopleremaining.length == 1) {
    alert("You are thinking of " + peopleremaining[0][0]);
}

else {
    newquestion();
}

 }

Answer 1

问题是你正在迭代“peopleremaining”数组的每个元素，但是在那个循环中你正在修改数组。

快速解决这个问题的方法就是像这样摆脱循环：

        for (var t = 0; t < peopleremaininglength; t++) {
            if (peopleremaining[t][questionsubject] < questionvalue) {
                peopleremaining.splice(t, 1)
                t = peopleremaininglength; // Add this line to break out of the loop
            }
        }

Answer 2

你犯了典型错误 - 你在迭代中修改了迭代对象。

人们猜测程序（Javascript）

2 个答案: