Javascript 真与假循环数组_Javascript_Jquery

Javascript 真与假循环数组

javascript jquery

Javascript 真与假循环数组,javascript,jquery,Javascript,Jquery,我试图在一个数组上循环，以便在显示正确或错误答案时显示下一个问题。单击“下一步”时，我希望隐藏上一条语句并显示下一条语句。这是我的一段代码 <body> <div class="row"> <div class="large-3 medium-3 small-3 small-centered columns"> <div class="content"></div> <button class="tr

我试图在一个数组上循环，以便在显示正确或错误答案时显示下一个问题。单击“下一步”时，我希望隐藏上一条语句并显示下一条语句。这是我的一段代码

<body>    

<div class="row">
  <div class="large-3 medium-3 small-3 small-centered columns">
    <div class="content"></div>
    <button class="true">True</button>
    <button class="false">False</button>
  </div>
</div>

<script>
  $(document).ready(function(){
    var questions = ['The Earth is round', 'The sun is yellow', 'Dogs are reptiles'];
    var answerTrue = ['You Got It!'];
    var answerFalse = ['Dogs are mamals'];

    $('button.true').click(function(){
      $('.content').text(questions[1]);
    });

  });
</script>


真的
假的
$（文档）.ready（函数（）{
var questions=[‘地球是圆的’、‘太阳是黄的’、‘狗是爬行动物’；
var answerTrue=[“你明白了！”；
var answerFalse=[“狗是哺乳动物”]；
$（'button.true'）。单击（函数（）{
$（'.content'）。文本（问题[1]）；
});
});

你需要一个计数器

$(document).ready(function()) {
    var questions = ['The Earth is round', 'The sun is yellow', 'Dogs are reptiles'];
    var answerTrue = ['You Got It!'];
    var answerFalse = ['Dogs are mammals'];
    var counter = 0;

    $('button.true').click(function(){       
      if(counter < questions.length) {
          $('.content').text(questions[counter]);
          counter = counter + 1;
      }
    });
}

$（文档）.ready（函数（））{
var questions=[‘地球是圆的’、‘太阳是黄的’、‘狗是爬行动物’；
var answerTrue=[“你明白了！”；
var answerFalse=[“狗是哺乳动物”]；
var计数器=0；
$（'button.true'）。单击（函数（）{
如果（计数器<问题长度）{
$（'.content'）.text（问题[计数器]）；
计数器=计数器+1；
}
});
}

您需要一个计数器

$(document).ready(function()) {
    var questions = ['The Earth is round', 'The sun is yellow', 'Dogs are reptiles'];
    var answerTrue = ['You Got It!'];
    var answerFalse = ['Dogs are mammals'];
    var counter = 0;

    $('button.true').click(function(){       
      if(counter < questions.length) {
          $('.content').text(questions[counter]);
          counter = counter + 1;
      }
    });
}

$（文档）.ready（函数（））{
var questions=[‘地球是圆的’、‘太阳是黄的’、‘狗是爬行动物’；
var answerTrue=[“你明白了！”；
var answerFalse=[“狗是哺乳动物”]；
var计数器=0；
$（'button.true'）。单击（函数（）{
如果（计数器<问题长度）{
$（'.content'）.text（问题[计数器]）；
计数器=计数器+1；
}
});
}

您需要一个计数器

$(document).ready(function()) {
    var questions = ['The Earth is round', 'The sun is yellow', 'Dogs are reptiles'];
    var answerTrue = ['You Got It!'];
    var answerFalse = ['Dogs are mammals'];
    var counter = 0;

    $('button.true').click(function(){       
      if(counter < questions.length) {
          $('.content').text(questions[counter]);
          counter = counter + 1;
      }
    });
}

$（文档）.ready（函数（））{
var questions=[‘地球是圆的’、‘太阳是黄的’、‘狗是爬行动物’；
var answerTrue=[“你明白了！”；
var answerFalse=[“狗是哺乳动物”]；
var计数器=0；
$（'button.true'）。单击（函数（）{
如果（计数器<问题长度）{
$（'.content'）.text（问题[计数器]）；
计数器=计数器+1；
}
});
}

您需要一个计数器

$(document).ready(function()) {
    var questions = ['The Earth is round', 'The sun is yellow', 'Dogs are reptiles'];
    var answerTrue = ['You Got It!'];
    var answerFalse = ['Dogs are mammals'];
    var counter = 0;

    $('button.true').click(function(){       
      if(counter < questions.length) {
          $('.content').text(questions[counter]);
          counter = counter + 1;
      }
    });
}

$（文档）.ready（函数（））{
var questions=[‘地球是圆的’、‘太阳是黄的’、‘狗是爬行动物’；
var answerTrue=[“你明白了！”；
var answerFalse=[“狗是哺乳动物”]；
var计数器=0；
$（'button.true'）。单击（函数（）{
如果（计数器<问题长度）{
$（'.content'）.text（问题[计数器]）；
计数器=计数器+1；
}
});
}

使用环形计数器代替计数器，以避免在最后一个问题（而是再次显示第一个问题）后跳出数组。您可以使用创建一个隐藏变量用作计数器，因此不能从click函数外部对其进行修改。为此，创建一个声明计数器变量的函数并返回另一个使用该变量的函数，然后立即调用外部函数（因此创建/返回内部函数）。请参阅下面的代码-声音比实际情况复杂得多

$(function () {
    var questions = ['The Earth is round', 'The sun is yellow', 'Dogs are reptiles'];
    var answerTrue = ['You Got It!'];
    var answerFalse = ['Dogs are mammals'];

    $('button.true').click(function () {
        var counter = 0;
        return function () {
            $('.content').text(questions[counter]);
            counter = ++counter % questions.length;
        }
    }());
});

使用环形计数器而不是计数器，以避免在最后一个问题之后跳出数组（而是再次显示第一个问题）。您可以使用创建一个隐藏变量用作计数器，因此不能从click函数外部对其进行修改。为此，创建一个声明计数器变量的函数并返回另一个使用该变量的函数，然后立即调用外部函数（因此创建/返回内部函数）。请参阅下面的代码-声音比实际情况复杂得多

$(function () {
    var questions = ['The Earth is round', 'The sun is yellow', 'Dogs are reptiles'];
    var answerTrue = ['You Got It!'];
    var answerFalse = ['Dogs are mammals'];

    $('button.true').click(function () {
        var counter = 0;
        return function () {
            $('.content').text(questions[counter]);
            counter = ++counter % questions.length;
        }
    }());
});

$(function () {
    var questions = ['The Earth is round', 'The sun is yellow', 'Dogs are reptiles'];
    var answerTrue = ['You Got It!'];
    var answerFalse = ['Dogs are mammals'];

    $('button.true').click(function () {
        var counter = 0;
        return function () {
            $('.content').text(questions[counter]);
            counter = ++counter % questions.length;
        }
    }());
});

$(function () {
    var questions = ['The Earth is round', 'The sun is yellow', 'Dogs are reptiles'];
    var answerTrue = ['You Got It!'];
    var answerFalse = ['Dogs are mammals'];

    $('button.true').click(function () {
        var counter = 0;
        return function () {
            $('.content').text(questions[counter]);
            counter = ++counter % questions.length;
        }
    }());
});

使用嵌套数组

 $(document).ready(function () {
     var questions = [
         ["Q1?", "true", "Noooo, beer!"],
         ["Q2?", "false", "Impossible!"],
         ["Q3?", "true", "It's more like a thing"],
         ["Q4?", "false", "Yes, but more like no"]
     ];

     var i = 0;

     $('.content').text(questions[i][0]);

     $('button').click(function () {
         var target = event.target;

         if ($(target).attr('class') == questions[i][1]) {
             i++;
             $('.content').text(questions[i][0]);
         }
         else alert(questions[i][2]);
     });
 });

使用嵌套数组

 $(document).ready(function () {
     var questions = [
         ["Q1?", "true", "Noooo, beer!"],
         ["Q2?", "false", "Impossible!"],
         ["Q3?", "true", "It's more like a thing"],
         ["Q4?", "false", "Yes, but more like no"]
     ];

     var i = 0;

     $('.content').text(questions[i][0]);

     $('button').click(function () {
         var target = event.target;

         if ($(target).attr('class') == questions[i][1]) {
             i++;
             $('.content').text(questions[i][0]);
         }
         else alert(questions[i][2]);
     });
 });

使用嵌套数组

 $(document).ready(function () {
     var questions = [
         ["Q1?", "true", "Noooo, beer!"],
         ["Q2?", "false", "Impossible!"],
         ["Q3?", "true", "It's more like a thing"],
         ["Q4?", "false", "Yes, but more like no"]
     ];

     var i = 0;

     $('.content').text(questions[i][0]);

     $('button').click(function () {
         var target = event.target;

         if ($(target).attr('class') == questions[i][1]) {
             i++;
             $('.content').text(questions[i][0]);
         }
         else alert(questions[i][2]);
     });
 });

使用嵌套数组

 $(document).ready(function () {
     var questions = [
         ["Q1?", "true", "Noooo, beer!"],
         ["Q2?", "false", "Impossible!"],
         ["Q3?", "true", "It's more like a thing"],
         ["Q4?", "false", "Yes, but more like no"]
     ];

     var i = 0;

     $('.content').text(questions[i][0]);

     $('button').click(function () {
         var target = event.target;

         if ($(target).attr('class') == questions[i][1]) {
             i++;
             $('.content').text(questions[i][0]);
         }
         else alert(questions[i][2]);
     });
 });

jeff_kile的回答完全正确，你需要一个计数器来跟踪你在一系列问题中的位置

值得一提的是，我做了一些注释，希望能让事情变得更清楚；请注意，这根本不是专家级javascript，我特意让它非常简单，以演示这些概念

你可以找到它

作为参考，代码为：

//setup array of questions with text, correct answer and what to display if the user gives
//and incorrect answer
var questions=[
    {text:'The Earth is Round',answer:true,note:'It\'s not flat'},
    {text:'The sun is yellow',answer:true,note:'no really it is'},
    {text:'Dogs are reptiles',answer:false,note:'What planet are you from?'}
];

//question array index
var index=0;

//helper function to display the content
var setContent=function(text)
{
    $(".content").text(text);
}

//helper function to show the current question
 var showQuestion=function(index)
    {
      question=questions[index];
       setContent(question.text);
    }
//helper function that checks if the user supplied answer is correct
 //and if so eother advances the question index or ends the game
 //otherwise, displays the question note.
var checkAnswer=function(userAnswer)
{
    question=questions[index];
     if (question.answer==userAnswer)
        {
            index++;
            if (index>=questions.length)
            {
                setContent("Thanks for playing");
            }
            else
            {
            showQuestion(index);
            }
        }
        else
        {
          setContent(question.note);
        }
}

//wireup clicks to send the answer for the current question to the answer check function
//and kicks off the game with question 0
$(document).ready(function(){

    $(".true").click(function(){
       checkAnswer(true);  
    });    
    $(".false").click(function(){
     checkAnswer(false); 
    });
       showQuestion(index);
  });

使用此html：

 <div class="row">
  <div class="large-3 medium-3 small-3 small-centered columns">
    <div class="content"></div>
    <button class="true">True</button>
    <button class="false">False</button>
  </div>
</div>

jeff_kile的回答完全正确，你需要一个计数器来跟踪你在一系列问题中的位置

值得一提的是，我做了一些注释，希望能让事情变得更清楚；请注意，这根本不是专家级javascript，我特意让它非常简单，以演示这些概念

你可以找到它

作为参考，代码为：

//setup array of questions with text, correct answer and what to display if the user gives
//and incorrect answer
var questions=[
    {text:'The Earth is Round',answer:true,note:'It\'s not flat'},
    {text:'The sun is yellow',answer:true,note:'no really it is'},
    {text:'Dogs are reptiles',answer:false,note:'What planet are you from?'}
];

//question array index
var index=0;

//helper function to display the content
var setContent=function(text)
{
    $(".content").text(text);
}

//helper function to show the current question
 var showQuestion=function(index)
    {
      question=questions[index];
       setContent(question.text);
    }
//helper function that checks if the user supplied answer is correct
 //and if so eother advances the question index or ends the game
 //otherwise, displays the question note.
var checkAnswer=function(userAnswer)
{
    question=questions[index];
     if (question.answer==userAnswer)
        {
            index++;
            if (index>=questions.length)
            {
                setContent("Thanks for playing");
            }
            else
            {
            showQuestion(index);
            }
        }
        else
        {
          setContent(question.note);
        }
}

//wireup clicks to send the answer for the current question to the answer check function
//and kicks off the game with question 0
$(document).ready(function(){

    $(".true").click(function(){
       checkAnswer(true);  
    });    
    $(".false").click(function(){
     checkAnswer(false); 
    });
       showQuestion(index);
  });

使用此html：

 <div class="row">
  <div class="large-3 medium-3 small-3 small-centered columns">
    <div class="content"></div>
    <button class="true">True</button>
    <button class="false">False</button>
  </div>
</div>

jeff_kile的回答完全正确，你需要一个计数器来跟踪你在一系列问题中的位置

值得一提的是，我做了一些注释，希望能让事情变得更清楚；请注意，这根本不是专家级javascript，我特意让它非常简单，以演示这些概念

你可以找到它

作为参考，代码为：

//setup array of questions with text, correct answer and what to display if the user gives
//and incorrect answer
var questions=[
    {text:'The Earth is Round',answer:true,note:'It\'s not flat'},
    {text:'The sun is yellow',answer:true,note:'no really it is'},
    {text:'Dogs are reptiles',answer:false,note:'What planet are you from?'}
];

//question array index
var index=0;

//helper function to display the content
var setContent=function(text)
{
    $(".content").text(text);
}

//helper function to show the current question
 var showQuestion=function(index)
    {
      question=questions[index];
       setContent(question.text);
    }
//helper function that checks if the user supplied answer is correct
 //and if so eother advances the question index or ends the game
 //otherwise, displays the question note.
var checkAnswer=function(userAnswer)
{
    question=questions[index];
     if (question.answer==userAnswer)
        {
            index++;
            if (index>=questions.length)
            {
                setContent("Thanks for playing");
            }
            else
            {
            showQuestion(index);
            }
        }
        else
        {
          setContent(question.note);
        }
}

//wireup clicks to send the answer for the current question to the answer check function
//and kicks off the game with question 0
$(document).ready(function(){

    $(".true").click(function(){
       checkAnswer(true);  
    });    
    $(".false").click(function(){
     checkAnswer(false); 
    });
       showQuestion(index);
  });

使用此html：<