我这段代码就是想从一个用xml做的邮件列表(4-11.xml)中提取信息其中javscript实现了下拉菜单和按钮，（书上的例子）但是不好使。请大家帮我看看！<html>
<head>
<title>extract email</title>
</head>
<body bgcolor="#ffffff">
<xml id="messagelist" src="4-11.xml"> </xml>
<script languge="javascript">
document.write("<h3>select the xml file to load nd then click the load file button to open it</h3>"); document.write("<br>"); document.write("SELECT Name=Select1"); RootElement1=messagelist.documentElement; if(RootElement1==null) { alert("the root node is null"); document.write("<b><big>the data of the xml file cnnot be accessed </big><b><br>"); } else { nodecount=RootElement1.childNodes.length; for(loopindex=0;loopindex<nodecount;loopindex++) { str1=" <OPTION "; str1=str1+"VALUE="+RootElement1.childNodes.item(loopindex).text; str1=str1+">"+RootElement1.childNodes.item(loopindex).text; str1=str1+"</OPTION><BR>"; document.write(str1); } } document.write("</SELECT><br>"); document.write("<FORM>"); document.write("INPUT TYPE=button Name=button1 value='click to lod file' onClick='LoadFile()'>"); document.write("</form><br>"); function LoadFile() { var xmlDoc1=new ActiveXObject("microsoft.xmldom"); xmlDoc1.Load(Select1 value); if(xmlDoc1.readyState=="4") { var loopindex; var RootElement1; var nodecount; RootElement1=xmlDoc1.documentElement; if(RootElement1==null) { alert("the root node is null"); document.write("<b><big>the data of the xml file cannot be accessed</big></b><br>"); } else { for(loopindex=0;loopindex<nodecount;loopindex++) { document.write(RootElement1.childNodes.item(loopindex).nodeName+": "); document.write(RootElement1.childNodes.item(loopindex).text+"<br>"); } } } else { alert("Process could not start"); } } </script>
<br>
</body>
</html>
xmlDoc1.Load(Select1 value);能不能吧4-11.xml也帖出来,这样方便调试一下.==========================================
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<?xml version="1.0" ?>
<MESSAGELIST>
<MESSAGE>4-7.xml</MESSAGE>
<MESSAGE>4-8.xml</MESSAGE>
<MESSAGE>4-9.xml</MESSAGE>
<MESSAGE>4-10.xml</MESSAGE>
</MESSAGELIST>
_________________4-7.xml__________
<?xml version="1.0" ?>
<MESSAGE>
<FILENAME>4-7.xml</FILENAME>
<TO>Author</TO>
<FROM>student</FROM>
<SUBJECT>xml code islands</SUBJECT>
<body>this is a reply to your message about xml data islands. </body>
</MESSAGE>4-8, 4-9, 4-10 差不多。下面是改动后的4-12,还是不对_________________________4-12________________
<html>
<head>
<title>extract email</title>
</head>
<body bgcolor="ffffff">
<script languge="JavaScript">
document.write("<h3>select the xml file to load nd then click the load file button to open it</h3>");
</script>
<xml id=messagelist src="4-11.xml"> </xml>
<script languge="JavaScript">
document.write("<h3>select the xml file to load nd then click the load file button to open it</h3>"); document.write("<br>"); document.write("<select Name=Select1>"); RootElement1=messagelist.documentElement; if(RootElement1==null) { alert("the root node is null"); document.write("<b><big>the data of the xml file cnnot be accessed </big></b><br>"); } else { nodecount=RootElement1.childNodes.length; for(loopindex=0;loopindex<nodecount;loopindex++) { str1=" <OPTION "; str1=str1+"VALUE="+RootElement1.childNodes.item(loopindex).text; str1=str1+">"+RootElement1.childNodes.item(loopindex).text; str1=str1+"</OPTION><BR>"; document.write(str1); } } document.write("</select><br>"); document.write("<form>"); document.write("<INPUT TYPE="button" Name="button1" value="click to load file" onClick="LoadFile()">"); document.write("</form><br>"); function LoadFile() { var xmlDoc1=new ActiveXObject("microsoft.xmldom"); xmlDoc1.Load(Select1.value); if(xmlDoc1.readyState=="4") { var loopindex; var RootElement1; var nodecount; RootElement1=xmlDoc1.documentElement; if(null==RootElement1) { alert("the root node is null"); document.write("<b><big>the data of the xml file cannot be accessed</big></b><br>"); } else { for(loopindex=0;loopindex<nodecount;loopindex++) { document.write(RootElement1.childNodes.item(loopindex).nodeName+": "); document.write(RootElement1.childNodes.item(loopindex).text+"<br>"); } } } else { alert("Process could not start"); } }
</script>
</body>
</html>
<head>
<title>extract email</title>
</head>
<body bgcolor="ffffff">
<script languge="JavaScript">
document.write("<h3>select the x button to open it</h3>");
</script>
<xml id=messagelist src="4-11.xml"></xml>
<script languge="JavaScript">
document.write("<h3>select the xml file to load nd then click the load file button to open it</h3>"); document.write("<br>");
document.write("<form name=\"Form1\">");
document.write("<select Name=Select1>");
document.write("<OPTION VALUE='' Selected='true' >请选择 </OPTION>"); var RootElement1=messagelist.documentElement; if(RootElement1==null) { alert("the root node is null"); document.write("<b><big>the data of the xml file cnnot be accessed </big></b><br>"); } else { nodecount=RootElement1.childNodes.length;
for(loopindex=0;loopindex<nodecount;loopindex++) { str1=" <OPTION "; str1=str1+"VALUE="+RootElement1.childNodes.item(loopindex).text; str1=str1+">"+RootElement1.childNodes.item(loopindex).text; str1=str1+"</OPTION>"; document.write(str1); } } document.write("</select><br>"); document.write("<INPUT TYPE=\"button\" Name=\"button1\" value=\"click to load file\" onClick=\"LoadFile()\">"); document.write("</form><br>"); function LoadFile() {
var files=document.Form1.Select1.options[document.Form1.Select1.selectedIndex].value;
var xmlDoc1=new ActiveXObject("microsoft.xmldom"); xmlDoc1.load(files); if(xmlDoc1.readyState=="4") { var loopindex; var RootElement1; var nodecount;
var strCollection; RootElement1=xmlDoc1.documentElement; if(null==RootElement1) { alert("the root node is null"); //document.write("<b><big>the data of the xml file cannot be accessed</big></b><br>"); } else { strCollection = "";
nodecount=RootElement1.childNodes.length;
for(loopindex=0;loopindex<nodecount;loopindex++) {
//一旦整个网页解析显示完毕,就不能在write了,只能通过innerHTML,,innerText来改变内容.所以以下代码是错误的.
//document.write(RootElement1.childNodes.item(loopindex).nodeName+": "); //document.write(RootElement1.childNodes.item(loopindex).text+"<br>");
strCollection += RootElement1.childNodes.item(loopindex).nodeName+": ";
strCollection += RootElement1.childNodes.item(loopindex).text+"<br> "; }
vi.innerHTML = strCollection;
// alert(strCollection);
} } else { alert("Process could not start"); } }
</script><DIV ALIGN="center" Id="vi" ></DIV>
</body>
</html>
谢谢你！
你上面给出的程序，我运行了一下， 并不是很理想，没有按钮 候选下拉菜单中也没有
4-x.xml文件，只有一个没选择。也可能使我的环境有问题。
我的操作系统是windows 2003 浏览器是IE 6.0 & netscape 7.0
好多东西IE 6.0 都不显示
。
请问一下你的qq和你的email，请你帮我再看看。
搞定后一定多多给分，可以交个朋友嘛？
email: [email protected]