Javascript XML 相同元素名称

Question

我有一个 XML 文件多次包含相同的元素名称，如下所示。我只能找回第一个。想知道如何使用 JavaScript 检索所有 4 个“评论”。谢谢!

<FRIENDSSTATUS>
  <STATUSFRIENDS id="2">
    <STATUS>Life begins at the end of your comfort zone</STATUS>
    <DATETIME>2012-10-30 10:32:28</DATETIME>
    <FIRSTNAME>Malcolm</FIRSTNAME>
    <LASTNAME>Landgraab</LASTNAME>
    <COMMENTS datetime="2012-11-18 22:13:28" firstname="Ian" lastname="Tellerman">rr</COMMENTS>
    <COMMENTS datetime="2012-11-18 22:13:39" firstname="Ian" lastname="Tellerman">hello</COMMENTS>
    <COMMENTS datetime="2012-11-19 14:36:24" firstname="Ian" lastname="Tellerman">test</COMMENTS>
    <COMMENTS datetime="2012-11-19 14:45:52" firstname="Ian" lastname="Tellerman">test4</COMMENTS>
   </STATUSFRIENDS>
  <STATUSFRIENDS id="3">
    <STATUS>Prometheus. Fantastic film!!!!</STATUS>
    <DATETIME>2012-10-30 10:32:28</DATETIME>
    <FIRSTNAME>Mansa</FIRSTNAME>
    <LASTNAME>Bendett</LASTNAME>
    <COMMENTS datetime="2012-11-18 22:14:46" firstname="Ian" lastname="Tellerman">wrong</COMMENTS>
  </STATUSFRIENDS>
</FRIENDSSTATUS>

JavaScript 代码:

    xmlDoc = xmlhttp.responseXML;
$table = "<table border='1'>";

var element = xmlDoc.getElementsByTagName("FRIENDSSTATUS");
var elements = xmlDoc.getElementsByTagName("STATUSFRIENDS");
var comments = xmlDoc.getElementsByTagName("COMMENTS");

    if(xmlDoc.documentElement !== null)
    {

    var root;
    if (navigator.userAgent.indexOf("Firefox") > 0 )
    var root = element[0].childElementCount;

    if (navigator.userAgent.indexOf("MSIE") > 0 )
    var root = xmlDoc.documentElement.childNodes.length;

    for(i=0; i<root; i++){
$strStats =  "";
$strComments = "";
$strDateTime = "";
$strFirstname = "";
$strLastname = "";

$strCommentDateTime =  "";
$strCommentFirstName = "";
$strCommentLastName = "";
$strStatusID = "";

if(navigator.userAgent.indexOf("Firefox") > 0 ){
for(y=0;y < elements[i].childElementCount;y++)
{
 $strStatusID = elements[i].getAttribute("id");
  if(strStatus = elements[i].getElementsByTagName("STATUS"))
    {
        $strStats = strStatus[0].firstChild.nodeValue; 

    }

  if(strStatus = elements[i].getElementsByTagName("DATETIME"))
    {
        $strDateTime = strStatus[0].firstChild.nodeValue; 

    }

  if(strStatus = elements[i].getElementsByTagName("FIRSTNAME"))
    {
        $strFirstname = strStatus[0].firstChild.nodeValue; 

    }

  if(strStatus = elements[i].getElementsByTagName("LASTNAME"))
    {
        $strLastname = strStatus[0].firstChild.nodeValue; 

    }
  if(strComm = elements[i].getElementsByTagName("COMMENTS"))
    { 
        $strComments = strComm[0].firstChild.nodeValue;
        $strCommentDateTime = comments[i].getAttribute("datetime");
        $strCommentFirstName = comments[i].getAttribute("firstname");
        $strCommentLastName = comments[i].getAttribute("lastname");

        $strComments += "<br>" + $strCommentFirstName + " " + $strCommentLastName + " " + $strCommentDateTime + "</br></br>";
   }
  $strStats = $strStats + " " + $strLastname + " " + $strFirstname + " " + $strDateTime;
  $strFullName = $strFirstname + " " + $strLastname;
  $strDateTime = "";
  $strFirstname = "";
  $strLastname = "";
}
}

Answer 1

将 XML 分配给变量(本例中为 myXmlString)，然后按如下方式读取它:

var parser=new DOMParser();
doc=parser.parseFromString(myXmlString,'text/xml');
var comments = doc.getElementsByTagName("COMMENTS") // Returns a array of those "comments".