Question

我正在我的网站上整合互动测验。我偶然发现了一个有效的测验，但我想在外部JSON文件旁边使用AJAX来检索问题和答案作为数组。我的html打2个电话

     <script src="question.js"></script>
     <script src="quiz-script.js"></script>

question.js包含以下内容

  var questions = [{
  "question": "The first mechanical computer designed by  Charles       
  Babbage was called ?",
  "option1": "Abacus",
  "option2": "Analytical Engine",
  "option3": "Calculator",
  "option4": "Processor",
  "answer": "2"
  }, {
  "question": "Which of the following is the most powerful type of 
  computer ?",
  "option1": "Super-micro",
  "option2": "Super conductor",
  "option3": "Super computer",
  "option4": "Megaframe",
  "answer": "3"
  }]

对question.js的以下修改：

   var ourRequest = new XMLHttpRequest();
   ourRequest.open('GET', 'http://www.rockmissionary.org/quiz- 
   data.json', true);
   ourRequest.onload = function() {
   var questions = ourRequest.responseText;
   console.log(questions);
   };
   ourRequest.send();

返回以下错误----- ReferenceError：未定义问题。请帮忙。

Answer 1

上述代码在正确格式化时有效。它可能只是一个复制/粘贴问题。请参阅下面的更好格式：

<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<header>
   
    <div class="wrapper">
   
        <a class="logo" href="">
            A S P X
        </a>
    
        <button id="brgr">
            <span></span>
            <span></span>
            <span></span>
        </button>

    </div>

</header>

<div id="menu">
    Menu
</div>

Answer 2

以下功能解决了这个问题。感谢所有在任何地方做出贡献的人帮助我解决这个非常简单的问题。没有 stackoverflow ，我们会怎么做？

    function getJSONData(jsonurl) {
    var req = null;
    if (window.XMLHttpRequest) {
        req = new XMLHttpRequest();
    }
    else if (window.ActiveXObject) {
        try {
            req = new ActiveXObject("Msxml2.XMLHTTP");
        }
        catch (e) {
            try {
                req = new ActiveXObject("Microsoft.XMLHTTP");
            }
            catch (e) { }
        }
    }
    req.open('GET', 'quiz-data.json', false);
    req.send(null);
    return req.status == 200 ? req.responseText : 'Error occurred';
    }
    var questions = JSON.parse(getJSONData('quiz-data.json'));

用JSON和AJAX替换本地javascript数组

2 个答案: