创建真假游戏，随机Q顺序？

Question

我正在创建一个真/假事实游戏，它已经完成了，只剩下一件事。问题总是以相同的顺序出现，我不知道如何编码，以使问题总是以随机顺序出现。 感谢任何方式的帮助。

代码：

div id="QA">    
    <h2></h2>
    <span id="buttons"></span>
    <p id="mkttext"></p>
    <p><strong>Points</strong> : <span>0</span></p>
    <div id="demo"></div>
    <br>
    <div id="centerbutton">
<button id="restart" onClick="history.go(0)">Restart game</button>
</div>

  </div>


<script>



var questionnaire = [

  {
    "question" : "Q: The earth is round",
    "valid"    : 1, // indicates the correct array number, use 0, 1...
    "buttons"  : ["False", "True"],
    "answers"  : [ "The correct answer is True"]  
  },
  {
    "question" : "Q: The correct answer is True",
    "valid"    : 1,
    "buttons"  : ["False", "True"],
    "answers"  : [ "The correct answer is True"] 
  },
  {
    "question" : "Q: Java = JavaScript",
    "valid"    : 0, 
    "buttons"  : ["False", "True"],
   "answers"  : [ "The correct answer is False"] 
  },
    {
    "question" : "Q: Grapes explode when you put them in the microwave",
    "valid"    : 1,
    "buttons"  : ["False", "True"],
    "answers"  : [ "The correct answer is True"] 
  },
    {
    "question" : "Q: Shakespeare invented both chess and the basketball",
    "valid"    : 0,
    "buttons"  : ["False", "True"],
    "answers"  : [ "The correct answer is False"] 
  },
    {
    "question" : "Q: LoL stands for World of Warcraft",
    "valid"    : 0,
    "buttons"  : ["False", "True"],
    "answers"  : [ "The correct answer is False"] 
  },
    {
    "question" : "Q: The average human will shed 40 pounds of skin in a lifetime.",
    "valid"    : 1,
    "buttons"  : ["False", "True"],
    "answers"  : [ "The correct answer is True"] 
  },
    {
    "question" : "Q: A giraffe can clean its ears with its 121-inch tongue",
    "valid"    : 0,
    "buttons"  : ["False", "True"],
    "answers"  : [ "The correct answer is False"] 
  },
      {
    "question" : "Q:  Nepal is the only country that doesn't have a rectangular flag",
    "valid"    : 1,
    "buttons"  : ["False", "True"],
    "answers"  : [ "The correct answer is True"] 
  },
    {
    "question" : "Q: The match was invented before the cigarette lighter",
    "valid"    : 0,
    "buttons"  : ["False", "True"],
    "answers"  : [ "The correct answer is False"] 
  },
      {
    "question" : "Game over, check your score below.",

  }

];


var $qa       = $('#QA'),
    $question = $("h2", $qa),
    $buttons   = $("#buttons", $qa),
    $points   = $("p>span",$qa),
    questionnaireLength = questionnaire.length,
    qc        = 0, // Current Question counter
    points    = 0; // Current points

function QandA(){

  var quest = questionnaire[qc],
      question = quest.question,
      validIdx = quest.valid,
      btns     = quest.buttons,
      answer   = quest.answers;

  $question.text( question );



  //End of the game
  if(qc >= questionnaireLength -1){ 

    var link = document.getElementById('buttons');
    link.style.display = 'none'; 

  }

  // generate buttons with text:
  $buttons.empty();
  var i=0; i<btns.length;{
    $buttons.append("<button id='btnfalse'>"+ btns[i] +"</button>");
  }
    var i=1; i<btns.length;{
    $buttons.append("<button id='btntrue'>"+ btns[i] +"</button>");
  }



  // Retrieve generated buttons
  var $btn = $("button", $buttons);

  // Assign click
  $btn.one('click', function(){  
    var idx = $btn.index(this); // get button index

    //var parent = document.getElementById('mkttext');
    //var p = document.createElement('p');
    //p.innerHTML = "Game says: "+ answer[idx] ;
    //parent.appendChild(p);

    points += (idx === parseInt(validIdx, 10) ? 1 : -0); 
    $points.text( points );
    // Next question
    qc++; QandA();
  });

}
QandA();

</script>

Answer 1

添加此功能

function shuffle(array) {
  var currentIndex = array.length, temporaryValue, randomIndex ;

  // While there remain elements to shuffle...
  while (0 !== currentIndex) {

    // Pick a remaining element...
    randomIndex = Math.floor(Math.random() * currentIndex);
    currentIndex -= 1;

    // And swap it with the current element.
    temporaryValue = array[currentIndex];
    array[currentIndex] = array[randomIndex];
    array[randomIndex] = temporaryValue;
  }

  return array;
}

然后像这样运行你的数组

questionnaire = shuffle(questionnaire);

见http://jsfiddle.net/apcdm3rk/