DOM - 元素对象方法 - setAttributeNode

setAttributeNode 方法将新属性节点设置为现有元素。

语法

以下是使用 setAttributeNode 方法的语法。

elementObj.setAttributeNode(newAttr)

此方法添加了一个新的属性节点。

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 setAttributeNode 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.createAttribute("City");
         x.nodeValue = "fourth";

         y = xmlDoc.getElementsByTagName("Email");
         y[0].setAttributeNode(x);

         document.write("City attribute is been set at the place: ");
         document.write(y[0].getAttribute("City"));
      </script>
   </body>
</html>

执行

将此文件保存为服务器路径上的 elementattribute_setAttributeNode.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 −

Display all the attribute nodes
category = technical
category = non-technical
category = Management