JScript Code (errorXPath.js)

[This sample code uses features that were first implemented in MSXML 5.0 for Microsoft Office Applications.]

var xs, xd;

testErrorXPath();

function testErrorXPath() 
{
  try {
    xs = new ActiveXObject("MSXML2.XMLSchemaCache.6.0");
    xd = new ActiveXObject("MSXML2.DOMDocument.6.0");
  }
  catch (e) {
    WScript.Echo("Microsoft XML Core Services (MSXML) 6.0 is not installed.\n"
    +"Install MSXML 6.0 before continuing.");
    return;
  }

  try {
    xs.add("urn:books", "books.xsd");
    xd.schemas = xs;
    xd.async = false;
    xd.validateOnParse = false;
  }
  catch (e) {
    WScript.Echo("Failed to add to schema cache: "+e.description);
    return;
  }

  try {
    xd.load("books.xml");
  }
  catch (e) {
    WScript.Echo("can't load books.xml : " + e.description);
    return;
  }

  msg = "Validating DOM...\n";
  var err = xd.validate();
  if (err.errorCode != 0 ) {
    msg += "invalid dom: \n" + err.reason 
        +  "errorXPath:\n" + err.errorXPath
        + "\n";
  }
  else
    msg +="DOM is valid:\n" + xd.xml+"\n";


  msg += "\n\nValidating nodes...\n";
  var nlist = xd.selectNodes("//book");
  for (var node = nlist.nextNode(); node!=null; node=nlist.nextNode())
  {
    var err = xd.validateNode(node);

    if (err.errorCode != 0) 
      msg += "\nNode is invalid:\n" + err.reason
          +  "nerrorXPath: \n" + err.errorXPath
          +  "\n";
    else
      msg += "\nNode is valid:\n"+ node.xml+"\n";
  }

  WScript.Echo(msg);
}

Try It!

1. Copy the XML data (books.xml), and paste it into a text file. Save the file as books.xml.

2. Copy the XSD listing (books.xsd), and paste it into a text file. Save the file as books.xsd, in the same directory where you saved books.xml.

3. Copy the JScript listing above, and paste it into a text file. Save the file as errorXPath.js, in the same directory where you saved books.xml and books.xsd.

4. Double click the errorXPath.js file from Windows Explorer to launch the application. Alternatively, you can type "errorXPath.js" from a command prompt.

   Note

   Under operating systems other than Windows 2000 or Windows XP, you might need to install Windows Scripting Host (wscript.exe), if it is not already installed.

5. Verify that your output is the same as that listed in Output for the errorXPath Example.