Javascript随机测验，但超过1问 [英] Javascript random quiz but more than 1 asked

问题描述

我已经制作了这个代码，每次刷新或点击页面时都会显示一个随机问题。但是，我希望它不仅显示一个随机问题，而且每次随机显示3个不同的问题。我该怎么做！

I have made this code which displays a random question each time a page is refreshed or clicked. However, i want it to display not just one random question but 3 different ones which are randomized each time. How would i do this!

谢谢！

<script language="JavaScript"> 
        var question= new Array(5)
        question[0] = "Question 1"
        question[1] = "Question 2"
        question[2] = "Question 3"
        question[3] = "Question 4 "
        question[4] = "Question 5) "
        question[5] = "Question 6) "
        var rand_int= Math.floor(Math.random()*5);

        document.write(question[rand_int]);
        </script>

推荐答案

这样可行。

<script language="JavaScript"> 

var question= new Array(5)
question[0] = "Question 1"
question[1] = "Question 2"
question[2] = "Question 3"
question[3] = "Question 4"
question[4] = "Question 5"
question[5] = "Question 6"

var numberOfQuestions = 3;
var questions = [];

for(var i=0;i<numberOfQuestions;i++){
    var rand_int= Math.floor(Math.random()*question.length);
          while(question[rand_int] == null){
    var rand_int= Math.floor(Math.random()*question.length);
    }
    questions.push(question[rand_int]);
    question.splice(rand_int, 1);
}

for (var i = 0; i < questions.length; i++) {
    document.write(questions[i] + "<br />");
}


</script>

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