Question

我希望解析这个.xml文档

<instances>
    <courseInstance id="147209" instanceCode="ENGLISH" 
           courseInstanceID="ENGLISH_147209" courseCode="ENGLISH" 
           courseDescription="ENGLISH Program" courseYear="1" 
           startDate="2014-06-01" session="2014" modeOfStudyCode="FULL_TIME" 
           modeOfStudyDescription="Full Time" courseStreamCode="A" 
           courseStreamDescription="Stream A" courseFee="0" waitlist="0" 
           waitlistPlacesLeft="0" instanceStatusCode="PROGRAM_OPEN" 
           instanceStatusDescription="Program Open">
        <service cis="147249" serviceCode="ONLINE_REG" 
                 serviceName="Enroll and Pay" startDate="2016-08-04" 
                 active="1" url="https://xxxx-xxx.xxxx.com/app/xxx/f?p=PV_ONLINE_REG:101:::::APP_COURSE_INSTANCE:147209"/>
    </courseInstance>
<instances>

我想在页面中显示HTML，我在列表中列出每个属性。

这是我的代码

<h2>Demo</h2>                            
<div id='show_LIVE_LINK'></div>

<script>
    displayCourses(0);

    function displayCourses(i) {
        var xmlhttp = new XMLHttpRequest();

        xmlhttp.onreadystatechange = function () {
            if (xmlhttp.readyState == 4 && xmlhttp.status == 200) {
               myFunction(xmlhttp, i);
            }
        };

        xmlhttp.open("GET", "solar.qll_web.common.xml", true);
        xmlhttp.send();
    }

    function myFunction(xml, i) {
        var xmlDoc = xml.responseXML;
        x = xmlDoc.getElementsByTagName("instances");

        document.getElementById("show_LIVE_LINK").innerHTML = "courseInstance: " + x[i].getElementsByTagName("courseInstance")
    }
</script>

我如何一个接一个地垂直向下看属性？

Answer 1

元素节点有一个attributes集合：

＆＃13;

var xml = `<instances>
    <courseInstance id="147209" instanceCode="ENGLISH" 
           courseInstanceID="ENGLISH_147209" courseCode="ENGLISH" 
           courseDescription="ENGLISH Program" courseYear="1" 
           startDate="2014-06-01" session="2014" modeOfStudyCode="FULL_TIME" 
           modeOfStudyDescription="Full Time" courseStreamCode="A" 
           courseStreamDescription="Stream A" courseFee="0" waitlist="0" 
           waitlistPlacesLeft="0" instanceStatusCode="PROGRAM_OPEN" 
           instanceStatusDescription="Program Open"/>
</instances>`;

var xmlDoc = new DOMParser().parseFromString(xml, 'application/xml');

function display(xmlDoc, index, targetEl) {
  targetEl.textContent = '';
  var ul = document.createElement('ul');
  [].forEach.call(xmlDoc.getElementsByTagName('courseInstance')[index].attributes, function(att) {
    var li = document.createElement('li');
    li.textContent = att.name + ' : ' + att.value;
    ul.appendChild(li);
    });
  targetEl.appendChild(ul);
}

display(xmlDoc, 0, document.getElementById('result'));

＆＃13;

<div id="result"></div>

＆＃13;

显然，您不想使用DOMParser解析XML字符串，而是使用XMLHttpRequest的responseXML，但是一旦有了，就可以读出元素的属性，如图所示。

如何解析XML文档

1 个答案: