DOM - Element Object 方法 - removeAttribute



removeAttribute方法指定从该元素中删除该属性值。

语法

以下是removeAttribute方法的使用语法。

elementObj.removeAttribute(name)

序号 参数和说明
1

name

保存要检索的属性名称。

此方法删除指定标签的名称。

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>[email protected]</Email>
   </Employee>
   
   <Employee category = "Non-Technical">
      <FirstName>Taniya</FirstName>
      <LastName>Mishra</LastName>
      <ContactNo>1234667898</ContactNo>
      <Email>[email protected]</Email>
   </Employee>
   
   <Employee category = "Management">
      <FirstName>Tanisha</FirstName>
      <LastName>Sharma</LastName>
      <ContactNo>1234562350</ContactNo>
      <Email>[email protected]</Email>
   </Employee>
</Company>

以下示例演示了removeAttribute方法的使用 −

<!DOCTYPE html>
<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');

         document.write("Before removing the attribute: ");
         document.write(x[1].getAttribute('category'));
         document.write("<br>");

         x[1].removeAttribute('category');

         document.write("After removing the attribute: ");
         document.write(x[1].getAttribute('category'));
      </script>
   </body>
</html>

执行

将此文件保存在服务器路径上(此文件和 node.xml 应在服务器中的同一个路径),文件名为elementattribute_removeattribute.htm。我们将获得如下所示的输出 −

Before removing the attribute: non-technical
After removing the attribute: null
dom_element_object.htm
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