DOM Node物件屬性parentNode

2019-10-16 23:20:03

DOM Node物件屬性parentNode指定節點的父節點。

語法

以下是parentNode屬性的使用語法。

nodeObject.parentNode

範例
檔案:node.xml 的內容如下 -

<Company> 
   <Employee category = "Technical" id = "firstelement"> 
      <FirstName>Susen</FirstName> 
      <LastName>Su</LastName> 
      <ContactNo>1584567890</ContactNo> 
      <Email>[email protected]</Email> 
   </Employee>  

   <Employee category = "Non-Technical"> 
      <FirstName>Max</FirstName> 
      <LastName>Su</LastName> 
      <ContactNo>1334667898</ContactNo> 
      <Email>[email protected]</Email> 
   </Employee>  

   <Employee category = "Management"> 
      <FirstName>Min</FirstName> 
      <LastName>Su</LastName> 
      <ContactNo>1364562350</ContactNo> 
      <Email>[email protected]</Email> 
   </Employee> 
</Company>

以下範例演示了parentNode屬性的用法,檔案:parentnode.html -

<!DOCTYPE html>
<html>
   <meta charset="utf-8"/>
   <body>
      <script>
         if (window.XMLHttpRequest) {
            xmlhttp = new XMLHttpRequest();
         } else {
            xmlhttp = new ActiveXObject("Microsoft.XMLHTTP");
         }
         xmlhttp.open("GET","/node.xml",false);
         xmlhttp.send();
         xmlDoc = xmlhttp.responseXML;
         document.write("Employee的父節點是: ");
         x = xmlDoc.getElementsByTagName("Employee")[0];
         document.write(x.parentNode.nodeName);
      </script>
   </body>
</html>

執行上面範例程式碼,得到以下結果 -