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jQuery.find()在IE中不返回数据,但在Firefox和Chrome中返回数据

xml jquery javascript

Steve Hiner · 技术社区 · 17 年前

我帮一个朋友做了一些网络工作。他需要的一部分是一种简单的方法来更改他网站上的几段文字。我没有让他编辑HTML,而是决定提供一个包含消息的XML文件,并使用jQuery将它们从文件中提取出来并插入到页面中。

它工作得很好。在Firefox和Chrome中,IE7的表现并不出色。我希望你们中有人能告诉我原因。我在谷歌上搜索了一番,但找不到我要找的东西。

以下是XML:

<?xml version="1.0" encoding="utf-8" ?>
<messages>
  <message type="HeaderMessage">
    This message is put up in the header area.
  </message>
  <message type="FooterMessage">
    This message is put in the lower left cell.
  </message>
</messages>

<script type="text/javascript">
  $(document).ready(function() {
    $.get('messages.xml', function(d) {
      //I have confirmed that it gets to here in IE
      //and it has the xml loaded.
      //alert(d); gives me a message box with the xml text in it
      //alert($(d).find('message')); gives me "[object Object]"
      //alert($(d).find('message')[0]); gives me "undefined"
      //alert($(d).find('message').Length); gives me "undefined"
      $(d).find('message').each(function() {
        //But it never gets to here in IE
        var $msg = $(this);
        var type = $msg.attr("type");
        var message = $msg.text();
        switch (type) {
        case "HeaderMessage":
          $("#HeaderMessageDiv").html(message);
          break;
        case "FooterMessage":
          $("#footermessagecell").html(message);
          break;
          default:
        }
      });
    });
  });
</script>

编辑:我发现,如果我在Visual Studio 2008中加载页面并运行它,那么它将在IE中工作。所以事实证明,它在通过开发web服务器运行时总是有效的。现在我想IE就是不喜欢这样做。从我的本地驱动器加载的XML中查找,所以也许当它在实际的web服务器上时,它会正常工作。

15 回复 | 直到 17 年前

Matthew Crumley 17 年前

Ajax完成

    complete: function( xhr, status )
    {
      alert( "COMPLETE.  You got:\n\n" + xhr.responseText ) ;
      if( status == 'parsererror' )
      {
        alert( "There was a PARSERERROR.  Luckily, we know how to fix that.\n\n" +
               "The complete server response text was " + xhr.responseText ) ;

        xmlDoc = null;

        // Create the xml document from the responseText string.
        // This uses the w3schools method.
        // see also
        if( window.DOMParser )
        {
          parser=new DOMParser();
          xmlDoc=parser.parseFromString( xhr.responseText,"text/xml" ) ;
        }
        else // Internet Explorer
        {
          xmlDoc=new ActiveXObject( "Microsoft.XMLDOM" ) ;
          xmlDoc.async = "false" ;
          xmlDoc.loadXML( xhr.responseText ) ;
        }

        $( '#response' ).append( '<p>complete event/xmlDoc: ' + xmlDoc + '</p>' ) ;
        $( '#response' ).append( '<p>complete event/status: ' + status + '</p>' ) ;

        processXMLDoc( xmlDoc ) ;
      }
    },

这里有一个更完整的例子

<!DOCTYPE html>
<html>
<head>
<title>Reading XML with jQuery</title>
<style>
#response
{
  border: solid 1px black;
  padding: 5px;
}
</style>
<script src="jquery-1.3.2.min.js"></script>
<script>
function processXMLDoc( xmlDoc )
{
  var heading = $(xmlDoc).find('heading').text() ;
  $( '#response' ).append( '<h1>' + heading + '</h1>' ) ;

  var bodyText = $(xmlDoc).find('body').text() ;
  $( '#response' ).append( '<p>' + bodyText + '</p>' ) ;
}
$(document).ready(function()
{
  jQuery.ajax({

    type: "GET",

    url: "a.xml",  // ! watch out for same
    // origin type problems

    dataType: "xml", // 'xml' passes it through the browser's xml parser

    success: function( xmlDoc, status )
    {
      // The SUCCESS EVENT means that the xml document
      // came down from the server AND got parsed successfully
      // using the browser's own xml parsing caps.

      processXMLDoc( xmlDoc );

      // IE gets very upset when
      // the mime-type of the document that
      // gets passed down isn't text/xml.

      // If you are missing the text/xml header
      // apparently the xml parse fails,
      // and in IE you don't get to execute this function AT ALL.

    },
    complete: function( xhr, status )
    {
      alert( "COMPLETE.  You got:\n\n" + xhr.responseText ) ;
      if( status == 'parsererror' )
      {
        alert( "There was a PARSERERROR.  Luckily, we know how to fix that.\n\n" +
               "The complete server response text was " + xhr.responseText ) ;

        xmlDoc = null;

        // Create the xml document from the responseText string.
        // This uses the w3schools method.
        // see also
        if( window.DOMParser )
        {
          parser=new DOMParser();
          xmlDoc=parser.parseFromString( xhr.responseText,"text/xml" ) ;
        }
        else // Internet Explorer
        {
          xmlDoc=new ActiveXObject( "Microsoft.XMLDOM" ) ;
          xmlDoc.async = "false" ;
          xmlDoc.loadXML( xhr.responseText ) ;
        }

        $( '#response' ).append( '<p>complete event/xmlDoc: ' + xmlDoc + '</p>' ) ;
        $( '#response' ).append( '<p>complete event/status: ' + status + '</p>' ) ;

        processXMLDoc( xmlDoc ) ;
      }
    },
    error: function( xhr, status, error )
    {
      alert( 'ERROR: ' + status ) ;
      alert( xhr.responseText ) ;
    }
  });
});
</script>
</head>
<body>
  <div>
    <h1><a href="http://think2loud.com/reading-xml-with-jquery/">Reading XML with jQuery</a></h1>
    <p>
      <a href="http://docs.jquery.com/Ajax/jQuery.ajax#options">#1 jQuery.ajax ref</a>
    </p>

  </div>

  <p>Server says:</p>
  <pre id="response">

  </pre>
</body>
</html>

.xml的内容

<?xml version="1.0"?>
<note>
  <to>Tove</to>
  <from>Jani</from>
  <heading>Reminder</heading>
  <body>Don't forget me this weekend!</body>
</note>

this example .

Community Mohan Dere 9 年前

检查响应的内容类型。如果messages.xml的mime类型错误,Internet Explorer将不会将其解析为xml。

$(document).ajaxComplete(function(e, x) {
    alert(x.getResponseHeader("Content-Type"));
});

overrideMimeType 之前可以调用的方法 send

McMadsen 16 年前

Quick&;肮脏的修复方法是将xml响应包装在html元素中,如div:

$("<div>" + xml + "</div>").find("something");

(适用于所有浏览器)

MJJames 17 年前

您可能会发现,如果将数据类型传递给get调用,它可能会正确解析为XML。IE的怪癖可能会阻止jQuery将其自动检测为XML,从而导致将错误的数据类型传递给回调函数。

<script type="text/javascript">
      $(document).ready(function() {
        $.get('messages.xml', function(d) {
          //I have confirmed that it gets to here in IE
          //and it has the xml loaded.
          //alert(d); gives me a message box with the xml text in it
          //alert($(d).find('message')); gives me "[object Object]"
          //alert($(d).find('message')[0]); gives me "undefined"
          //alert($(d).find('message').Length); gives me "undefined"
          $(d).find('message').each(function() {
            //But it never gets to here in IE
            var $msg = $(this);
            var type = $msg.attr("type");
            var message = $msg.text();
            switch (type) {
            case "HeaderMessage":
              $("#HeaderMessageDiv").html(message);
              break;
            case "FooterMessage":
              $("#footermessagecell").html(message);
              break;
              default:
            }
          });
        }, "xml");
      });
</script>

编辑:

$(d).filter('message').each(......);

sanjeev 15 年前

jQuery.ajax({
 type: "GET",
        url: "textxml.php",
        success: function(msg){             
            data = parseXml(msg);
            //alert(data);
            var final_price = jQuery(data).find("price1").text();
            alert(final_price); 
            }
    });     

function parseXml(xml) {
     if (jQuery.browser.msie) {
        var xmlDoc = new ActiveXObject("Microsoft.XMLDOM"); 
        xmlDoc.loadXML(xml);
        xml = xmlDoc;
    }   
    return xml;
}

Jason Higgins 13 年前

你可以

<a>
<messages>
  <message type="HeaderMessage">
    This message is put up in the header area.
  </message>
  <message type="FooterMessage">
    This message is put in the lower left cell.
  </message>
</messages>
</a>

并使用find()。它适用于IE8和firefox v.3.6.3

jacobangel 17 年前

Bigabdoul 16 年前

这对于$.ajax(…,dataType:“XML”)和 $.get(xmlDataFilePath,函数(d){…},“xml”)
当ajax调用成功时, 字符串

第二个问题是这样解决的:

$(document).ready(function()
{
    $.ajax(
    { 
        type: "GET",
        url: "messages.xml", 
        dataType: "XML", /* this parameter MUST BE UPPER CASE for it to work in IE */
        success: function(xml)
        { 
            processXmlDoc( createXmlDOMObject ( xml ) );
        }, /* success: */
        error: function(xhr, textStatus, errorThrown)
        { 
            alert(textStatus + ' ' + errorThrown);
        } /* error: */
    });/* $.ajax */

    function createXmlDOMObject(xmlString)
    {
        var xmlDoc = null;

        if( ! window.DOMParser )
        {
            // the xml string cannot be directly manipulated by browsers 
            // such as Internet Explorer because they rely on an external 
            // DOM parsing framework...
            // create and load an XML document object through the DOM 
            // ActiveXObject that it can deal with
            xmlDoc = new ActiveXObject( "Microsoft.XMLDOM" );
            xmlDoc.async = false;
            xmlDoc.loadXML( xmlString );
        }
        else
        {
            // the current browser is capable of creating its own DOM parser
            parser = new DOMParser();
            xmlDoc = parser.parseFromString( xmlString, "text/xml" ) ;
        }

        return xmlDoc;
    }

    function processXmlDoc(xmlDoc)
    {
        // write here your XML processing logic for the document object...
    } 
}); // $(document).ready

RobertPitt 16 年前

$.ajax({
  url: 'messages.xml',
  success: function(data){
     $(d).find('message').each(function(){
        //But it never gets to here in IE
        var $msg = $(this);
        var type = $msg.attr("type");
        var message = $msg.text();
        switch (type) {
          case "HeaderMessage":
             $("#HeaderMessageDiv").html(message);
          break;
          case "FooterMessage":
             $("#footermessagecell").html(message);
          break;
        }
      });
  },
  dataType: 'xml'
});

Alfred redcoder 14 年前

dataType :"text/xml",

dataType :"xml",

无需更改find()。

Alfred redcoder 14 年前

.find()

所以,我分配 "text/xml" response.contentType .

也就是 response.contentType = "text/xml" 它奏效了。

"text/html"

prof. Xavier 16 年前

我也遇到了同样的问题,我正在开发一个基于web的应用程序,但我需要它在CD中离线部署。我在这个页面上找到了解决方案,这与你上面看到的解决方案相同 http://docs.jquery.com/Specifying_the_Data_Type_for_AJAX_Requests 代码非常简单:

 $.ajax({
   url: "data.xml",
   dataType: ($.browser.msie) ? "text" : "xml",
   success: function(data){
     var xml;
     if (typeof data == "string") {
       xml = new ActiveXObject("Microsoft.XMLDOM");
       xml.async = false;
       xml.loadXML(data);
     } else {
       xml = data;
     }
     // write here your XML processing logic for the document object... 
   }
 });

stevensf 16 年前

我也有同样的问题。..

已解决此问题:

http://www.w3schools.com/dom/dom_parser.asp

if (window.DOMParser)
  {
  parser=new DOMParser();
  xmlDoc=parser.parseFromString(text,"text/xml");
  }
else // Internet Explorer
  {
  xmlDoc=new ActiveXObject("Microsoft.XMLDOM");
  xmlDoc.async="false";
  xmlDoc.loadXML(text); 
  }

使用它将var转换为xml对象。..

TessellatingHeckler 11 年前

Chrome/Firefox:

xml.children[0].childNodes[1].innerHTML;

xml.childNodes[0].childNodes[1].textContent;

IE8:

xml.documentElement.childNodes[1].text;

var xml = $.parseXML(XMLDOC); 

Var xmlNodeValue = ""; 

if(userAgent.match("msie 8.0")){

xmlNodeValue = xml.children[0].childNodes[1].innerHTML;

}else{ // IE8+

xmlNodeValue = xml.childNodes[0].childNodes[1].textContent; 

}

christophe 10 年前

<?php
    header("Content-type: text/xml");
    echo '<myxml></myxml>';
?>