DOM - 元素对象方法 - removeAttributeNode

removeAttributeNode 方法指定从元素中删除的属性节点。

语法

以下是使用 removeAttributeNode 方法的语法。

elementObj.removeAttributeNode(oldAttr)

此方法删除属性节点。

示例

node.xml内容如下 −

<?xml version = "1.0"?>
<Company>
   <Employee category = "Technical">
      <FirstName>Tanmay</FirstName>
      <LastName>Patil</LastName>
      <ContactNo>1234567890</ContactNo>
      <Email>tanmaypatil@xyz.com</Email>
   </Employee>
   
   <Employee category = "Non-Technical">
      <FirstName>Taniya</FirstName>
      <LastName>Mishra</LastName>
      <ContactNo>1234667898</ContactNo>
      <Email>taniyamishra@xyz.com</Email>
   </Employee>
   
   <Employee category = "Management">
      <FirstName>Tanisha</FirstName>
      <LastName>Sharma</LastName>
      <ContactNo>1234562350</ContactNo>
      <Email>tanishasharma@xyz.com</Email>
   </Employee>
</Company>

以下示例演示了 removeAttributeNode 方法的用法 −

<!DOCTYPE html>
   <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("/dom/node.xml");

         x = xmlDoc.getElementsByTagName('Employee');
         for (i = 0;i < x.length;i++) {
            while (x[i].attributes.length > 0) {
               y = x[i].attributes[0];
               z = x[i].removeAttributeNode(y);

               document.write("Removed : " + z.nodeName)
               document.write(": " + z.nodeValue)
               document.write("<br>")
            }
          }
      </script>
   </body>
</html>

执行

将此文件保存为服务器路径上的 elementattribute_removeAttributeNode.html(此文件和 node.xml 应位于服务器中的同一路径)。我们将获得如下所示的输出 −

Removed : category: technical
Removed : category: non-technical
Removed : category: Management