DOM Element對象getAttributeNode()方法

DOM Element對象getAttributeNode()方法從當前元素中提供屬性節點的名稱。

語法

以下是getAttributeNode()方法的使用語法。

elementObj.getAttributeNode(name)

參數

  • name - 包含要檢索的屬性名稱。

返回值

  • 如果存在,此方法將屬性節點的值作為字串返回,否則返回為null

示例

檔:node.xml 的內容如下 -

<?xml version = "1.0" encoding = "UTF-8" standalone = "no" ?>
<Company>
   <Employee category = "Technical" id = "firstelement">
      <FirstName>Susen</FirstName>
      <LastName>Su</LastName>
      <ContactNo>1584567890</ContactNo>
      <Email>susen@xuhuhu.com</Email>
   </Employee>

   <Employee category = "Non-Technical">
      <FirstName>Max</FirstName>
      <LastName>Su</LastName>
      <ContactNo>1334667898</ContactNo>
      <Email>maxsu@xuhuhu.com</Email>
   </Employee>

   <Employee category = "Management">
      <FirstName>Min</FirstName>
      <LastName>Su</LastName>
      <ContactNo>1364562350</ContactNo>
      <Email>minsu@xuhuhu.com</Email>
   </Employee>
</Company>

以下示例演示了getAttributeNode()方法的用法 -

<!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("/node.xml");

         x = xmlDoc.getElementsByTagName('Employee');
         document.write("顯示所有屬性節點: ");
         document.write("<br>");
         for(i = 0;i < x.length;i++) {
            y = x.item(i).getAttributeNode("category");
            document.write(y.name);
            document.write(" = ");
            document.write(y.value);
            document.write("<br>");
         }
      </script>
   </body>
</html>

執行上面示例代碼,得到以下結果 -


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