问AS3:在随机加载问题的问答游戏中包含图片

EN

var quizModel:Array = [{q:"1+1 = ?", a:"2"}, {q:"5+5 = ?", a:"10"}, {q:"2+2 = ?", a:"4"}, {q:"6+6 = ?", a:"12"},{q:"8-7 = ?",a:"1"}];

var user_ans:Array = new Array();
var newQuizModel:Array = shuffleArray(quizModel);

function shuffleArray(arr:Array):Array
{
    var l:Number = arr.length - 1;

    for (var it:uint = 0; it<l; it++)
    {
    var r:int = Math.round(Math.random() * l);
    var tmp:Object = arr[it];
    arr[it] = arr[r];
    arr[r] = tmp;
    }
return arr;
}

var index:int = 0;
questions_txt.text = newQuizModel[index]["q"];

submit.label = "Submit";  //This is a button I made from the” windows->component” that has a label “Submit”. If clicked, it will check if the answer is correct or not 

submit.addEventListener(MouseEvent.CLICK,yow);

function yow (event:MouseEvent):void{  //Runs if the Submit button is clicked

    if (userAnswer.text == newQuizModel[index]["a"]) 
    {
        answers_txt.text = "Your answer is correct!";
    }
    else
    {
        answers_txt.text = "Your answer is wrong";
    }

    index++;

if(index == quizModel.length){  //Runs if all of the questions in the array loads
    Over.text = "It's Over!";
    index--;
    submit.visible=false;
    questions_txt.visible=false;
    userAnswer.visible=false;
}
    showQuiz(index);

}

function showQuiz(idx:int):void
{
    questions_txt.text = "Question: " + newQuizModel[idx]["q"];
}

showQuiz(index);