DOM DocumentType物件entities屬性

2019-10-16 23:19:24

DOM DocumentType物件entities屬性返回一個NamedNodeMap物件,該物件包含在DTD中宣告的外部和內部通用實體。

語法

以下是entities屬性的使用語法。

documentObj.doctype.entities

範例

檔案:address_internal_dtd.xml 的內容如下 -

<?xml version = "1.0" encoding = "UTF-8" standalone = "no"?>
<!DOCTYPE address [
   <!ELEMENT address    (name,company,phone)>
   <!ELEMENT name    (#PCDATA)>
   <!ELEMENT company   (#PCDATA)>
   <!ELEMENT phone (#PCDATA)>
]>

<address>
   <name>Tianya Su</name >
   <company>Yiibai Yiibai</company>
   <phone>(011) 123-456789</phone>
</address>

以下範例演示了entities屬性的用法 -

<!DOCTYPE html>
<html>
   <meta charset="utf-8"/>
    <head>
      <script>
         function loadXMLDoc(filename) {
            if (window.XMLHttpRequest) {
               xhttp = new XMLHttpRequest();
            } else // code for IE5 and IE6 
            {
               xhttp = new ActiveXObject("Microsoft.XMLHTTP");
            }
            xhttp.open("GET",filename,false);
            xhttp.send();
            return xhttp.responseXML;
         }
      </script>
   </head>
   <body>
      <script>
         xmlDoc = loadXMLDoc("/address_internal_dtd.xml");

         x = xmlDoc.doctype.entities;

         document.write("Nodename is: " + xmlDoc.nodeName);
         document.write("<br>");
         document.write(" nodetype is: " + xmlDoc.nodeType + "<br>");

         y = xmlDoc.documentElement;
         document.write("Nodename is: " + y.nodeName);
         document.write("<br>");
         document.write(" nodetype is: " + y.nodeType + "<br>");
      </script>
   </body>
</html>

執行上面範例程式碼,得到以下結果 -